He Shou Wu: What Patients Need to Know

He shou wu is a traditional herbal product, also known as fo-ti or Polygonum multiflorum, that is used in some complementary health practices. Patients should know that although it is often marketed for hair, aging, or vitality, it can cause side effects and has been linked to liver injury in some people.

Overview: what he shou wu is and why it raises safety questions

He shou wu is a traditional herbal product made from Polygonum multiflorum, a plant also known as fo-ti. In traditional East Asian medicine, it has been used in different forms for purposes such as supporting hair health, energy, and healthy aging. Today, it is sold as teas, powders, capsules, tablets, and extracts.

For patients, the most important point is that “natural” does not always mean harmless. He shou wu has attracted attention because reports of liver injury have been linked to some products containing this herb. The risk may depend on the dose, duration of use, the way the herb is processed, and the person’s overall health.

Another challenge is that herbal supplements are not all made in the same way. Different brands may contain different amounts of active compounds, and some may be mixed with other ingredients. This variation can make effects less predictable than standard prescription medicines.

Because of these concerns, patients often benefit from thinking of he shou wu not as a routine wellness product, but as a substance that deserves the same careful discussion as any medicine or supplement.

Common claims and what the evidence really shows

He shou wu is commonly promoted for hair graying, hair loss, vitality, constipation, and general anti-aging support. Some laboratory and animal studies suggest that components of the plant may have biologic activity, including antioxidant or anti-inflammatory effects. However, these early findings do not prove that the herb safely produces meaningful health benefits in people.

Human research is limited, and there is not enough high-quality evidence to confirm many of the broad claims seen in supplement marketing. This does not mean the herb never has an effect, but it does mean patients should be careful about relying on it as a treatment for a medical problem.

When a person is considering he shou wu for concerns such as fatigue, hair thinning, or constipation, it may be more helpful to look for the underlying cause first. Symptoms can be related to anemia, thyroid disease, nutritional deficiency, digestive disorders, or skin and scalp conditions. For example, persistent hair loss may deserve evaluation for hair loss rather than self-treatment with a supplement alone.

If constipation is a concern, it is also worth remembering that some herbal products may act like laxatives and can cause cramping or diarrhea. Ongoing bowel changes should be assessed medically, particularly when they are new, severe, or associated with weight loss, bleeding, or abdominal pain.

Possible side effects and safety concerns

The best-known concern with he shou wu is liver toxicity. Reported problems have ranged from mild, temporary changes in liver blood tests to more serious hepatitis-like illness with jaundice, fatigue, nausea, dark urine, or abdominal discomfort. In some cases, symptoms improved after the herb was stopped, but serious complications can occur.

Not everyone who takes he shou wu will have side effects, and the exact reason one person develops liver injury while another does not is not always clear. Product differences, contamination, dose, processing method, and individual sensitivity may all play a role. People who already have liver disease may be at higher risk and should be especially cautious.

Other possible side effects include diarrhea, stomach upset, nausea, cramping, dizziness, or allergic reactions. Some products may be more irritating to the digestive tract than others, especially concentrated extracts. Because herbal ingredients can be listed differently on labels, patients should read packaging carefully and avoid combining multiple products with similar ingredients.

Anyone who develops yellowing of the eyes or skin, unusual tiredness, itching, dark urine, pale stools, or pain in the upper right abdomen after starting a supplement should stop using it and seek medical advice promptly. Doctors may evaluate these symptoms similarly to other causes of liver disease, because the liver can be affected by herbs, medicines, infections, and metabolic conditions.

Who should avoid he shou wu or use extra caution

He shou wu may not be appropriate for everyone. People with existing liver disease, a history of drug- or supplement-related liver problems, heavy alcohol use, or unexplained abnormal liver tests should avoid using it unless a qualified physician specifically advises otherwise. This is especially important because the liver is central to processing many substances taken by mouth.

Pregnant or breastfeeding individuals should also avoid he shou wu unless their clinician says it is safe, because reliable safety data are lacking. Children and older adults may be more vulnerable to side effects, particularly dehydration or digestive upset if the product causes diarrhea.

Caution is also sensible for people with multiple medical conditions or those taking several prescription medicines. Herbal products can affect the way the body handles other drugs, and the reverse may also be true. Even when an interaction is not fully proven, doctors generally prefer to know about all supplements before they recommend treatment or order tests.

Patients preparing for surgery or procedures should tell the medical team about he shou wu and other supplements. In many cases, clinicians advise stopping nonessential herbal products before planned procedures so that side effects, interactions, or unexpected changes in recovery are less likely.

Medicine interactions, diagnosis, and what to tell the doctor

One practical issue with he shou wu is that interaction data are incomplete. That means absence of proof is not the same as proof of safety. Patients taking medicines that affect the liver, blood clotting, digestion, or the immune system should be particularly cautious and should ask a doctor or pharmacist before starting any new herbal supplement.

If symptoms develop after using he shou wu, the doctor will usually begin by reviewing the full supplement list, prescription medicines, alcohol intake, and medical history. Blood tests may be used to check liver enzymes and bilirubin, and in some situations clinicians may recommend a medical check-up to assess whether another illness could be causing the symptoms.

Diagnosis often involves ruling out more common explanations first, such as viral hepatitis, gallbladder disease, fatty liver, alcohol-related injury, or reactions to prescription drugs. The timing of symptoms in relation to when the supplement was started can be very helpful. Bringing the bottle or label to the appointment may also help identify ingredients and dosages.

In people with troubling digestive symptoms, weakness, or dehydration from diarrhea, supportive evaluation may include fluid assessment and other laboratory tests. Patients should not restart the supplement after a suspected reaction unless a qualified clinician specifically advises it, because repeat exposure may lead to a more severe response.

Safer ways to approach treatment and self-care

If a person is considering he shou wu for a health goal, the safest first step is to ask what problem they are actually trying to solve. For hair changes, low energy, or constipation, treatment works best when it is matched to the cause. A doctor may look for nutritional issues, hormonal problems, medication side effects, digestive disorders, or skin conditions before recommending any therapy.

Depending on the concern, evidence-based care may involve dietary changes, blood tests, treatment of an underlying condition, or specialist referral. For digestive complaints that are persistent or unexplained, clinicians may recommend gastroenterology evaluation rather than self-treatment with supplements. For significant liver-related symptoms or abnormal tests, a specialist review such as hepatology care may be appropriate.

General self-care measures are often a safer place to begin than unproven supplements. These may include a balanced diet, adequate hydration, regular sleep, stress management, and following clinician advice for known conditions such as thyroid disease, iron deficiency, or scalp disorders. For constipation, increasing fiber and fluids may help many people, though some need tailored medical advice.

When choosing any supplement, patients should use reputable manufacturers, avoid products with exaggerated claims, and keep a current list of everything they take. Even then, quality cannot be guaranteed in the same way as regulated prescription medicines, so ongoing caution remains important.

When to seek medical care

Medical care is important if symptoms begin after starting he shou wu or any new supplement. Warning signs include jaundice, dark urine, severe nausea, vomiting, persistent abdominal pain, marked fatigue, confusion, or signs of dehydration such as dizziness and very low urine output. These symptoms deserve prompt professional assessment.

Patients should also contact a doctor if they have mild but ongoing side effects, such as diarrhea, cramping, appetite loss, rash, or itching. Even symptoms that seem minor at first can provide early clues to intolerance or liver stress, especially if they continue for more than a few days.

Anyone with chronic liver disease, multiple medications, pregnancy, breastfeeding, or a history of adverse reactions to herbs should seek advice before using he shou wu at all. This is also true for people using supplements instead of evaluation for unexplained hair loss, fatigue, bowel changes, or weight changes.

For international patients who need assessment, Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals diagnose and treat liver, digestive, and general health concerns with individualized medical evaluation.

Frequently asked questions

What is he shou wu used for?

He shou wu is traditionally used for concerns such as hair changes, vitality, and bowel function. However, strong clinical evidence for many of these uses is limited, so it should not replace medical evaluation or proven treatment.

Is he shou wu the same as fo-ti?

Yes. Fo-ti is a common English name for he shou wu, which comes from the plant Polygonum multiflorum. Product labels may use one name, both names, or the botanical name.

Can he shou wu damage the liver?

Yes, it has been linked to liver injury in some people. The risk is not fully predictable, which is why patients should stop the product and seek medical advice if they develop jaundice, dark urine, unusual fatigue, or abdominal pain.

Is he shou wu safe if it is natural?

Not necessarily. Natural products can still cause side effects, interact with medicines, or vary in quality from one brand to another. Herbal supplements should be used with the same caution as other health products.

Who should avoid he shou wu?

People with liver disease, abnormal liver tests, heavy alcohol use, pregnancy, breastfeeding, or a history of reactions to supplements should be especially cautious and generally avoid it unless a doctor advises otherwise. It is also wise to be careful when taking multiple prescription medicines.

Should a patient tell their doctor about he shou wu?

Yes. Doctors and pharmacists should know about all herbs, vitamins, and supplements because they may affect test results, interact with medicines, or help explain new symptoms. Bringing the product label to the appointment can be useful.

References

• National Center for Complementary and Integrative Health
• U.S. Food and Drug Administration
• National Institutes of Health Office of Dietary Supplements
• European Medicines Agency
• World Health Organization

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.