Willow bark acts a lot like aspirin. It's most commonly used for pain and fever. But there is no good scientific evidence to show that it works as well as aspirin for these conditions.
Coronavirus disease 2019 (COVID-19): Some experts warn that willow bark may interfere with the body's response against COVID-19. There is no strong data to support this warning. But there is also no good data to support using willow bark for COVID-19.
How does it work ?
Uses & Effectiveness ?
Possibly Effective for
Insufficient Evidence for
- Osteoarthritis. Research on willow bark extract for osteoarthritis has produced conflicting results. Some research shows it can reduce osteoarthritis pain. In fact, there is some evidence suggesting that willow bark extract works as well as conventional medications for osteoarthritis. But other research shows no benefit.
- Rheumatoid arthritis (RA). Early research shows that willow bark extract does not reduce pain in people with RA.
- A type of arthritis that mainly affects the spine (ankylosing spondylitis).
- Common cold.
- Flu (influenza).
- Joint pain.
- Menstrual cramps (dysmenorrhea).
- Muscle pain.
- Other conditions.
Special Precautions and Warnings
Breast-feeding: Using willow bark while breast-feeding is POSSIBLY UNSAFE. Willow bark contains chemicals that can enter breast milk and have harmful effects on the nursing infant. Don't use it if you are breast-feeding.
Children: Willow bark is POSSIBLY UNSAFE n children when taken by mouth for viral infections such as colds and flu. There is some concern that, like aspirin, it might increase the risk of developing Reye's syndrome. Stay on the safe side and don't use willow bark in children.
Bleeding disorders: Willow bark might increase the risk of bleeding in people with bleeding disorders.
Kidney disease: Willow bark might reduce blood flow through the kidneys. This might lead to kidney failure in some people. If you have kidney disease, don't use willow bark.
Sensitivity to aspirin: People with ASTHMA, STOMACH ULCERS, DIABETES, GOUT, HEMOPHILIA, HYPOPROTHROMBINEMIA, or KIDNEY or LIVER DISEASE might be sensitive to aspirin and also willow bark. Using willow bark might cause serious allergic reactions. Avoid use.
Surgery: Willow bark might slow blood clotting. There is a concern it could cause extra bleeding during and after surgery. Stop using willow bark at least 2 weeks before a scheduled surgery.
Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs) interacts with WILLOW BARK
Willow bark might slow blood clotting. Taking willow bark along with medications that also slow clotting might increase the chances of bruising and bleeding.
Some medications that slow blood clotting include aspirin, clopidogrel (Plavix), diclofenac (Voltaren, Cataflam, others), ibuprofen (Advil, Motrin, others), naproxen (Anaprox, Naprosyn, others), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, warfarin (Coumadin), and others.
Do not take this combination
Aspirin interacts with WILLOW BARK
Willow bark contains chemicals similar to aspirin. Taking willow bark along with aspirin might increase the effects and side effects of aspirin.
Choline Magnesium Trisalicylate (Trilisate) interacts with WILLOW BARK
Willow bark contains chemicals that are similar to choline magnesium trisalicylate (Trilisate). Taking willow bark along with choline magnesium trisalicylate (Trilisate) might increase the effects and side effects of choline magnesium trisalicylate (Trilisate).
Salsalate (Disalcid) interacts with WILLOW BARK
Salsalate (Disalcid) is called a salicylate. It's similar to aspirin. Willow bark also contains a salicylate similar to aspirin. Taking salsalate (Disalcid) along with willow bark might increase the effects and side effects of salsalate (Disalcid).
Be cautious with this combination
- For back pain: Willow bark extract providing 120-240 mg salicin has been used. The higher 240 mg dose might be more effective.
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