Before UTI Treatment: Medicines, Allergies and Pregnancy Status Your Doctor Will Ask About

The burning started on a Tuesday afternoon, and by evening she was in a same-day clinic, ready to describe exactly how many times she had run to the bathroom. Instead, the clinician looked up from the screen and asked about a rash she had as a child after a dental antibiotic, what she took for her blood pressure, and the date of her last period. It felt like a detour. It was the opposite.

Questions about UTI treatment, allergies and medications are not paperwork. They are the part of the visit where the clinician quietly rules out the drugs that could hurt you and narrows down the ones likely to work. A urinary tract infection is a bacterial infection anywhere from the urethra to the kidneys, and most are treated with a short antibiotic course. Which course depends almost entirely on your answers.

Here is what sits behind each question, why the pregnancy one matters so much, and what to say if you have been told you are allergic to half the pharmacy.

What actually happens at a UTI appointment before any prescription

Most visits follow the same quiet sequence. First comes the story: where it hurts, how long, whether there is fever, back pain or blood in the urine. Then the clinician asks about your medical history, your medicines and your allergies. Only after that does the urine sample come into play.

A urine dipstick is a paper strip that changes color when it detects white blood cells, nitrites (a chemical many urinary bacteria produce) or blood. It gives a result in about a minute and helps confirm that the symptoms fit an infection. A urine culture is a laboratory test in which the sample is grown for one to three days so the exact bacterium can be identified and tested against a panel of antibiotics. Mayo Clinic notes that culture is not always needed for a straightforward first infection in a healthy woman, but it becomes important when infections recur, when symptoms are unusual, in men, in pregnancy, and whenever treatment might fail.

Because culture results take days and you are uncomfortable now, the clinician often chooses an antibiotic empirically, meaning a best-evidence guess based on which bacteria are common locally and which drugs still work against them. That guess is only as safe as the information you give. An allergy you forgot to mention, a blood thinner you did not think counted as a ‘medicine’, or a pregnancy you had not yet confirmed can turn a routine choice into a risky one.

So the questions come first, deliberately. A thorough history takes two or three minutes. A wrong antibiotic can cost a week of continued symptoms, or an emergency visit.

UTI treatment, allergies and medications: why these three questions decide the prescription

Think of antibiotic selection as a filter with three layers. The first layer removes anything you have reacted to before. The second removes anything that clashes with a drug already in your body. The third removes anything unsafe for a developing pregnancy. Whatever passes all three is then matched against local resistance patterns, your kidney function and the site of infection.

Allergies come first because the consequences are the most immediate. A true allergic reaction is the immune system treating a medicine as a threat, and reactions range from an itchy rash to anaphylaxis, a rapid whole-body reaction that can close the airway. Mayo Clinic describes penicillins and sulfa-containing antibiotics as among the most commonly reported culprits, and both families are mainstays of urinary infection treatment.

Current medicines come second because the interaction is often silent until it is not. A common sulfa antibiotic can intensify the effect of warfarin, a blood thinner, over several days. Trimethoprim, used alone or in combination for UTIs, can raise blood potassium, which matters if you already take an ACE inhibitor, an angiotensin receptor blocker or a potassium-sparing diuretic for blood pressure or heart failure. None of these interactions is felt at the moment of swallowing.

Pregnancy comes third not because it is less important but because it reshapes the whole plan. Some first-line antibiotics are avoided in the first trimester, others near delivery, and a UTI in pregnancy is always treated as a complicated infection with a culture to confirm the organism is gone.

You cannot know which layer will catch something. That is why a good clinician asks all three, every time, even for a repeat infection.

Which UTI antibiotic allergy matters most, and why many 'allergies' are not allergies at all

Penicillin allergy is the big one, partly because it is the most commonly recorded and partly because it is the most commonly wrong. Mayo Clinic reports that about 1 in 10 people say they are allergic to penicillin, yet far fewer are truly allergic when tested. Many labels date from a childhood rash that was probably caused by the viral illness being treated, or from a stomach upset that was a side effect rather than an immune reaction.

The label still has teeth. A recorded penicillin allergy can push a clinician away from amoxicillin-clavulanate and some cephalosporins, which are closely related antibiotics, toward alternatives that may be broader than needed or more likely to disturb gut bacteria. That is why allergy clinics increasingly offer penicillin allergy testing, a supervised process that can safely remove a label that no longer applies. Whether that is right for you is a question for your doctor or an allergist, not something to attempt alone.

Sulfa allergy is the second major category. Trimethoprim-sulfamethoxazole, a widely used UTI antibiotic, contains a sulfonamide, and a prior reaction to it is a genuine reason to choose something else. Nitrofurantoin, another first-line urinary antibiotic, has its own rare but serious reactions involving the lungs or liver, so a history of a bad experience with it is worth stating clearly.

What helps your clinician most is detail. Which drug, roughly when, what happened, how fast, and whether you needed emergency care. ‘I got a rash two days in’ and ‘my throat swelled within minutes’ lead to very different decisions. If you have a photo of an old reaction or a hospital letter, bring it.

What to take for a UTI if you are allergic to antibiotics

Almost nobody is allergic to every antibiotic. Antibiotics belong to chemically distinct families, and a reaction to one family does not predict a reaction to an unrelated one. Someone with a penicillin allergy can usually be treated with nitrofurantoin, fosfomycin or a sulfa-based drug; someone with a sulfa allergy can usually use a penicillin-type drug or nitrofurantoin. The job is to find the family that is both safe for you and active against your bacteria, and a urine culture makes that job far easier.

When several allergies are listed, the clinician’s first step is often to sort them. Which were true immune reactions, which were side effects such as nausea or thrush, and which are uncertain? Side effects are not allergies and do not rule a drug out, though they are worth weighing. Uncertain histories, particularly to penicillin, may be clarified with allergy testing when there is time.

For the rare person with multiple confirmed severe allergies, options still exist. Some antibiotics can be given under supervision in a process called drug desensitization, in which tiny, gradually increasing exposures are given over hours in a monitored setting so the drug can be tolerated for that course. It is a specialist decision and it is not permanent, but it means a documented allergy is rarely a dead end.

What does not work is skipping antibiotics in favor of supplements. Cranberry products, D-mannose and alkalizing powders have been studied mainly for prevention, with mixed results, and none has been shown to treat an established infection. A UTI left untreated can climb to the kidneys. If antibiotics are a problem for you, the answer is a different antibiotic chosen carefully, not no antibiotic.

Medications your doctor will ask about: the interactions that change the antibiotic choice

Bring a list, including over-the-counter products, inhalers, patches and supplements. The table shows the medicine groups that most often alter a UTI prescription and why. It is a summary of recognized interactions described by NHS and Mayo Clinic sources, not a set of instructions.

What you take	Why it matters for UTI antibiotics	What the clinician may do
Warfarin and other blood thinners	Several antibiotics, especially sulfa-based ones, can increase bleeding risk by changing how warfarin is processed	Choose a different antibiotic or arrange closer blood monitoring
Methotrexate	Trimethoprim can raise methotrexate levels and harm bone marrow	Avoid trimethoprim-containing antibiotics
ACE inhibitors, ARBs, spironolactone	Trimethoprim can push blood potassium too high in combination	Select another class or check potassium
Antacids, iron, calcium, zinc, magnesium	These bind fluoroquinolones in the gut and block absorption	Choose another antibiotic or advise spacing
Heart-rhythm medicines, some antidepressants and antipsychotics	Fluoroquinolones can lengthen the heart’s electrical cycle, adding to the effect of these drugs	Avoid fluoroquinolones
Urinary pain relievers (phenazopyridine)	Turns urine orange and can interfere with dipstick readings	Ask you to stop briefly before testing

Two medicines deserve a word beyond the table. People with reduced kidney function, which becomes more common with age and with diabetes, may not concentrate nitrofurantoin in the urine well, so the clinician will often want a recent kidney blood test. People with a glucose-6-phosphate dehydrogenase (G6PD) deficiency, an inherited enzyme shortfall, can develop red cell breakdown with nitrofurantoin or sulfa antibiotics, which is why that diagnosis belongs on your list too.

One interaction is largely a myth. The NHS states that most antibiotics do not reduce the effectiveness of hormonal contraception; the exceptions are rifampicin-type drugs used for tuberculosis, not UTI antibiotics. Vomiting or severe diarrhea from any cause is the real reason to use backup protection.

Can allergy meds cause a UTI? What the evidence actually supports

The short answer is: not directly, but some can set the stage. Antihistamines, the hay fever and cold tablets that dry up a runny nose, also have anticholinergic effects, meaning they dampen the nerve signals that make the bladder contract. Older sedating antihistamines, and the decongestant pseudoephedrine, which tightens the muscle at the bladder outlet, can make it harder to empty completely.

Incomplete emptying matters because urine that lingers is urine that bacteria can grow in. Cleveland Clinic and Mayo Clinic both list urinary retention as a risk factor for infection, alongside catheters, enlarged prostate and conditions that affect bladder nerves. So a person who already empties poorly, such as an older man with prostate enlargement, may notice that a week of allergy tablets tips him into retention, and sometimes into an infection.

For a healthy younger adult with a normal bladder, the effect is small, and non-sedating antihistamines have far weaker anticholinergic activity. The evidence linking routine allergy medicine use to UTIs in otherwise healthy people is thin and mostly observational, so it would be wrong to blame your antihistamine for every infection.

The connection matters for a different reason at the appointment. If you mention a daily allergy tablet, the clinician may ask about your stream, whether you feel fully empty, and whether you strain, because those answers can reveal a retention problem that antibiotics alone will not fix. There is also a practical overlap: some allergy and cold products contain acetaminophen or ibuprofen, which affects what you can safely add for pain.

Do not stop a prescribed allergy medicine on your own. Mention it, and let your clinician decide whether it has any bearing on this infection.

Antibiotics for UTI in pregnancy: why your pregnancy status changes almost everything

Pregnancy is the one answer that reshapes the whole visit, which is why clinicians ask every person who could be pregnant, even when the question feels unnecessary. Hormonal changes relax the ureters, the tubes that carry urine from kidney to bladder, and the growing uterus presses on the bladder. Urine moves more slowly, bacteria have more time to multiply, and an infection has an easier path upward.

That is why MedlinePlus and Mayo Clinic describe UTIs in pregnancy as higher risk. Untreated bladder infections are more likely to become kidney infections, and kidney infection in pregnancy is associated with preterm labor and low birth weight. For the same reason, standard prenatal care includes testing urine for bacteria even when there are no symptoms; this asymptomatic bacteriuria is one of the few situations where bacteria without symptoms are routinely treated.

The pregnancy answer also removes several antibiotics from the table. Fluoroquinolones are generally avoided throughout pregnancy because of concerns about developing cartilage. Trimethoprim is usually avoided in the first trimester because it interferes with folate, the vitamin that protects against neural tube defects. Nitrofurantoin is widely used in mid-pregnancy but is commonly avoided close to delivery because of a small risk of red cell breakdown in the newborn. Penicillin-type drugs and cephalosporins have long safety records and are often preferred.

Which of these applies to you depends on the trimester, your allergies and the culture result, and the decision belongs with your obstetric and primary care team. Expect a culture before treatment, a longer course than a non-pregnant woman would receive, and often a repeat test afterward to confirm the infection has cleared.

If you might be pregnant but are not sure, say so. A quick urine pregnancy test at the visit is far simpler than reconsidering the prescription later.

Who is usually treated straight away, and who is usually asked to wait

Not everyone with a positive dipstick walks out with an antibiotic, and not everyone with symptoms needs to wait for a culture. Guidelines sort people by how likely an untreated infection is to cause harm.

Treated promptly, often before culture results: pregnant women; men, because UTIs in men are considered complicated and often involve the prostate; anyone with fever, back pain or vomiting suggesting a kidney infection; people with diabetes, a transplant, a urinary catheter or a weakened immune system; and anyone whose symptoms are severe. For these groups the risk of waiting outweighs the small chance of choosing an imperfect antibiotic.

Often asked to wait or to watch: healthy, non-pregnant adults with mild symptoms and no fever. The NHS notes that mild UTIs sometimes resolve without antibiotics, and some clinicians use a ‘delayed prescription’, a prescription you fill only if symptoms worsen or have not improved after a couple of days. This approach reduces unnecessary antibiotic use, which in turn slows antibiotic resistance, the process by which bacteria evolve to survive drugs that once worked.

Usually not treated at all: bacteria in the urine of someone with no symptoms, outside of pregnancy and a few planned urological procedures. This is common in older adults, especially those in care settings, and treating it does not improve outcomes but does drive resistance and side effects. The CDC specifically cautions against testing or treating urine in the absence of urinary symptoms for this reason.

Where you land depends on the answers you gave about allergies, medicines and pregnancy, combined with your symptoms. If you are asked to wait, ask what exactly should prompt you to come back, and write it down.

What clears up a UTI quickly? An honest look at what works and what does not

For a confirmed bacterial infection, the fastest route to relief is the right antibiotic chosen for your allergies, medicines and pregnancy status. The NHS states that symptoms usually ease within 3 to 5 days of starting treatment, and many people feel noticeably better within the first day or two. Nothing sold over the counter treats the infection itself.

Comfort measures help while the antibiotic works. Drinking enough fluid keeps urine dilute and flowing, which flushes bacteria and reduces stinging. Plain acetaminophen or ibuprofen can ease pain and fever, though ibuprofen is best avoided if you have kidney disease, stomach ulcers or are pregnant unless your doctor says otherwise. A heating pad on the lower abdomen soothes bladder spasm. Phenazopyridine, a urinary pain reliever available without prescription in the US, numbs the urinary lining for a day or two but does nothing to the bacteria, and it should be mentioned to your clinician because it discolors urine and can affect tests.

Claims that cranberry juice, baking soda, apple cider vinegar or ‘flushing with water alone’ will clear an infection are not supported by evidence. Cranberry has been studied for preventing recurrent infections, with inconsistent results, and has not been shown to treat an active one. Alkalizing products may ease stinging slightly but can interfere with some antibiotics.

If you feel no improvement after two to three days of antibiotics, the drug may not match the bacterium. Resistance to commonly used UTI antibiotics is rising, which is exactly why a culture is so valuable: it tells your clinician which drugs the bacteria can still be killed by. Finishing the prescribed course, even once you feel well, remains standard advice unless your clinician tells you otherwise.

What are the top 3 antibiotics for UTI, and why there is no single best one

Search engines love a ranked list, but UTI treatment does not work that way. Clinical guidelines describe several first-line options for an uncomplicated bladder infection in a healthy, non-pregnant woman, each with a reason it might be chosen or avoided, and the ‘best’ one is the one that passes your personal filter of allergies, medicines and pregnancy status, then matches local resistance data.

Nitrofurantoin concentrates in the bladder, has low resistance rates and spares gut bacteria, which is why many guidelines place it first for simple cystitis. It is not suitable for kidney infections because it does not reach kidney tissue well, and it is less reliable when kidney function is reduced.

Trimethoprim-sulfamethoxazole has a long record and works quickly, but resistance has climbed in many regions, it carries sulfa allergy risk, and it has the warfarin, methotrexate and potassium interactions described earlier.

Fosfomycin is a single-course option that remains active against some resistant bacteria, which makes it useful when allergies or interactions have narrowed the field.

Behind these sit the beta-lactams, including amoxicillin-clavulanate and cephalosporins such as cephalexin. They are safe in pregnancy and often chosen there, but resistance to plain amoxicillin is high, and they are usually second choice when first-line drugs are available.

Fluoroquinolones such as ciprofloxacin are deliberately held back. They work well, but the US Food and Drug Administration and other agencies warn about tendon, nerve and heart-rhythm effects, so guidelines reserve them for kidney infections, complicated cases or when no other option fits.

If your clinician prescribes something not on this list, it may reflect your culture result or your history. The right question is not ‘is this the best antibiotic’ but ‘why this one for me’.

What the next few days usually look like once UTI treatment starts

Day one is often the hardest. The antibiotic begins killing bacteria within hours, but the bladder lining is already inflamed, so burning and urgency usually continue through the first day. Fluid, warmth and simple pain relief carry most people through.

By day two or three, most people notice that urgency has eased and that they are sleeping through the night again. The NHS timeline of 3 to 5 days for symptoms to settle is a typical range, not a promise, and people with kidney involvement often take longer. Fever from a kidney infection should start to fall within about 48 to 72 hours of effective treatment; persistent fever beyond that is a reason to call.

Side effects tend to appear in this window too. Nausea, loose stools and vaginal yeast infections are the most common, and the NHS lists them as expected nuisances rather than allergies. A new rash, facial swelling, wheeze or blistering is different and needs prompt medical attention, because that pattern suggests a genuine drug reaction.

If a culture was sent, results usually return within two to three days. Sometimes the lab shows the bacteria are resistant to the antibiotic you started; your clinician may switch you, even if you feel somewhat better, because partial treatment invites relapse. Occasionally the culture shows no infection at all, and the conversation shifts to other causes of bladder symptoms.

Follow-up is not routine for a straightforward infection that has cleared. It is routine in pregnancy, after a kidney infection, for men, and for anyone whose symptoms return within a few weeks. Blood in the urine that persists after symptoms resolve also deserves a second look, as it can have causes unrelated to infection.

What people often get wrong about UTI antibiotics and allergies

Myth: a stomach upset on an antibiotic means you are allergic. Nausea, diarrhea and thrush are side effects, not immune reactions. Recording them as allergies can unnecessarily rule out useful drugs for life. Tell your clinician what happened and let them decide how to label it.

Myth: a childhood penicillin allergy is permanent. Mayo Clinic notes that penicillin sensitivity frequently fades over time, and many adults who were labeled as children are no longer allergic. Formal testing, not self-experimentation, is the way to find out.

Myth: antibiotics make the contraceptive pill fail. The NHS is clear that this applies to rifampicin-type antibiotics, not to the drugs used for UTIs. Vomiting or severe diarrhea is the real reason to use backup contraception.

Myth: if the first antibiotic did not work, you need a ‘stronger’ one. You need the right one. A culture identifies which drugs the bacteria are susceptible to; ‘stronger’ often just means broader, with more side effects and more resistance risk.

Myth: cranberry juice treats an infection. It has been studied for prevention, with mixed results, and not for treatment. An active infection needs an antibiotic.

Myth: bacteria in the urine always need treatment. Outside of pregnancy and certain procedures, bacteria without symptoms are usually left alone, particularly in older adults, because treating them causes harm without benefit.

Myth: men and women get the same UTI treatment. Men are usually treated for longer and are more likely to need a culture and follow-up, because infection in men often involves the prostate.

Myth: you can stop once you feel better. Feeling well does not mean every bacterium is gone. Complete the course as prescribed unless your clinician tells you to change it.

Questions to ask your care team about UTI treatment, allergies and medications

A few minutes of questions can prevent a week of trouble. These are the ones that tend to matter most, grouped by the three things your clinician asked you about.

About allergies:

• Given what I described, do you think my past reaction was a true allergy or a side effect?
• Would penicillin allergy testing make sense for me, and who would arrange it?
• If I react to this antibiotic, what signs should make me stop and seek help, and what should I do next?

About medications:

• Does this antibiotic interact with anything on my list, including my supplements?
• Should any of my regular medicines be monitored more closely during the course, such as my blood thinner?
• Are there things I should avoid taking at the same time, such as antacids or iron?

About pregnancy and future planning:

• Is this antibiotic appropriate for my stage of pregnancy, or if I am trying to conceive?
• Will I need a repeat urine test afterward?

About the plan itself:

• Was a culture sent, and how will I hear about the result?
• When should I expect to feel better, and when should I call if I do not?
• Is this a simple infection or a complicated one, and does that change my follow-up?
• Why this antibiotic rather than another, given my history?

Write the answers down or ask for them in your after-visit summary. If you use more than one pharmacy or more than one prescriber, ask that your allergy list and medicine list be updated in each system, because an interaction check is only as good as the record it runs against.

When to call your doctor: red-flag signs during UTI treatment

Most bladder infections settle quietly on treatment. The signs below mean the infection may be spreading, the antibiotic may be wrong, or your body may be reacting to the drug. Contact your doctor the same day, or seek emergency care, if you notice any of them.

• Fever, chills or shaking, especially with pain in your side or back below the ribs, which the NHS lists as signs of a kidney infection
• Nausea or vomiting that stops you keeping fluids or your antibiotic down
• No improvement after two to three days of antibiotics, or symptoms that get worse
• A new rash, hives, swelling of the lips, face or tongue, wheeze or difficulty breathing, which can indicate a drug allergy and needs emergency care
• Severe or bloody diarrhea during or after the course, which can signal a gut infection triggered by antibiotics
• Confusion, drowsiness or agitation, particularly in an older person; this can be the only sign of serious infection
• Very little urine, or none, over several hours
• Vaginal bleeding, contractions or reduced baby movements if you are pregnant
• Unusual bruising or bleeding if you take a blood thinner
• Yellowing of the skin or eyes, dark urine with pale stools, or new breathlessness and cough on nitrofurantoin, which are rare but serious reactions

Sepsis, the body’s overwhelming response to infection, can develop from a kidney infection and is a medical emergency. Fast breathing, a racing heart, mottled or cold skin, and feeling ‘the worst I have ever felt’ are reasons to call emergency services rather than wait for an appointment.

Every decision about continuing, changing or stopping an antibiotic belongs with the team treating you. If you are unsure whether a symptom counts, call; clinicians would far rather hear from you early than late.

Frequently asked questions

What can I take for a UTI if I am allergic to antibiotics?

You can almost always be treated with an antibiotic from a different family, because allergies are specific to chemical groups, not to antibiotics as a whole. A penicillin allergy leaves nitrofurantoin, fosfomycin and sulfa-based options; a sulfa allergy leaves penicillin-type drugs and nitrofurantoin. A urine culture helps your clinician match a safe family to your bacteria. Supplements do not treat an active infection.

Can allergy meds cause a UTI?

Not directly. Sedating antihistamines and decongestants can make the bladder empty less completely, and lingering urine gives bacteria time to grow. The effect is small in healthy adults with normal bladders and more relevant for older men with prostate enlargement. Mention any allergy medicine to your clinician, but do not stop a prescribed one on your own.

What clears up a UTI quickly?

For a bacterial UTI, an antibiotic chosen to suit your allergies, medicines and pregnancy status is the fastest route to relief; the NHS says symptoms usually ease within 3 to 5 days of starting treatment. Fluids, warmth and simple pain relief ease symptoms meanwhile. Cranberry, baking soda and vinegar have not been shown to treat an established infection.

What are the top 3 antibiotics for a UTI?

There is no universal top three. Guidelines list nitrofurantoin, trimethoprim-sulfamethoxazole and fosfomycin as common first-line options for uncomplicated bladder infection in healthy, non-pregnant women, with beta-lactams such as cephalexin used in pregnancy or when first-line drugs do not fit. The right one depends on your allergies, interactions, kidney function and local resistance.

Which antibiotics for UTI in pregnancy are usually avoided?

Fluoroquinolones are generally avoided throughout pregnancy, trimethoprim is usually avoided in the first trimester because it interferes with folate, and nitrofurantoin is commonly avoided close to delivery. Penicillin-type drugs and cephalosporins have long safety records and are often preferred. Your obstetric team decides based on trimester, allergies and culture results.

Is a UTI antibiotic allergy the same as a side effect?

No. Nausea, diarrhea and yeast infections are side effects, meaning expected effects of the drug on the body. An allergy is an immune reaction, typically a rash, hives, swelling or breathing difficulty. The distinction matters because side effects do not rule a drug out for the future, while true allergies do. Describe exactly what happened so your clinician can record it correctly.

Do I have to tell my doctor about supplements before UTI treatment?

Yes. Iron, calcium, magnesium and zinc supplements bind some antibiotics in the gut and block absorption, and some herbal products affect how the liver processes drugs. Cranberry and D-mannose are worth mentioning too so your clinician knows what you have already tried. A complete list, including over-the-counter pain relievers, gives the safest result.

Why does my doctor ask about pregnancy for a UTI when I am not planning one?

Because several standard UTI antibiotics are avoided in pregnancy and the first weeks of pregnancy often pass unnoticed. A quick urine pregnancy test at the visit is simpler than discovering a problem after a prescription has been started. The question is routine for anyone who could be pregnant and is not a judgment about you.

Can I take antibiotics for a UTI if I am on blood thinners?

Usually yes, but the choice matters. Sulfa-based antibiotics in particular can increase warfarin’s effect over several days and raise bleeding risk. Your clinician may select a different antibiotic or arrange closer blood monitoring during the course. Never adjust your blood thinner yourself; report any unusual bruising or bleeding promptly.

What if my UTI antibiotic is not working after three days?

Call your clinician. The bacteria may be resistant to the drug chosen, and a urine culture, if sent, will usually be back by then to guide a switch. Fever, back pain, vomiting or confusion are reasons to seek same-day care rather than waiting. Do not stop or change the antibiotic on your own.

References

• NHS: Urinary tract infections (UTIs)
• NHS: Antibiotics, interactions
• MedlinePlus: Urinary Tract Infections
• Cleveland Clinic: Urinary Tract Infections

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.