Slippery Elm 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 |
|---|---|
| Slippery Elm | 1.6 g |
Certifications & Testing
Other Ingredients
plant-derived Capsule, Cellulose, Magnesium Stearate
Recommended Use
Recommendation: Take 4 capsules three times daily with warm water between mealtimes.
Warnings
Warning: Slippery Elm should not be taken together with any medication as it may interfere with absorption. If pregnant, nursing, or taking any medications, consult a healthcare professional before use. Keep out of reach of children. Safety sealed with printed inner seal. Do not use if seal is broken or missing.
Frequently Asked Questions
What is Nature's Way Slippery Elm Bark's Formulate score?
Nature's Way Slippery Elm Bark scores 68 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 Slippery Elm Bark worth it?
Nature's Way Slippery Elm Bark scores 68/100 (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 Slippery Elm Bark?
Each serving contains Slippery Elm (1.6 g). Serving size: 4 Capsule(s). 25 servings per container.
How do I take slippery elm bark?
Recommendation: Take 4 capsules three times daily with warm water between mealtimes.
Who makes Slippery Elm Bark?
Slippery Elm 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 Slippery Elm Bark third-party tested?
Nature's Way lists the following certifications and testing for this product: Dairy-Free, Gluten-Free, Vegan, Vegetarian, Sugar-Free.
Related Supplements
Track slippery elm bark in your stack
Build a personalized supplement stack free in your browser — no install. Flag dose overlaps and interactions, and keep every product scored against the latest evidence.
Is Slippery Elm Bark right for your goals?
Two questions, then every ingredient graded against what you're actually trying to do — plus what it costs per effective dose.
Build my stack2 questions · free · no account needed to start
Also on iPhone — get the free app
Evidence-based supplement guides, no spam
We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.
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.