Willow Bark
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Willow | 680 mg |
Certifications & Testing
Other Ingredients
Hypromellose
Recommended Use
Recommendation: Adults take 2 capsules twice daily, preferably with food.
Warnings
Warning: Do not use for children with a fever. Do not use if you are pregnant, nursing, have an ulcer, or if you have allergies or contraindications to aspirin or other salicylates. If you are taking blood thinners, or any other medications, consult a healthcare professional before use. Discontinue use two weeks prior to surgery, or if stomach upset occurs. Keep out of reach of children. Safety se
Frequently Asked Questions
What is Nature's Way Willow Bark's Formulate score?
Nature's Way Willow Bark scores 78 out of 100 (grade B+) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Nature's Way Willow Bark worth it?
Nature's Way Willow Bark scores 78/100 (grade B+). That's an above-average result — most of its doses and ingredient forms are well-chosen, with only minor gaps in dosing, transparency, or testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Nature's Way Willow Bark?
Each serving contains Willow (680 mg). Serving size: 2 Capsule(s). 50 servings per container.
How do I take willow bark?
Recommendation: Adults take 2 capsules twice daily, preferably with food.
Who makes Willow Bark?
Willow Bark is made by Nature's Way. See Formulate's full grade and product lineup for Nature's Way on its brand page.
Is Nature's Way Willow Bark third-party tested?
Nature's Way lists the following certifications and testing for this product: Dairy-Free, Gluten-Free, Vegan, Vegetarian.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.