PureLean Fiber
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Magnesium250 systematic reviews · 790 randomised trials | 100 mg |
| PreticX Xylooligosacharides | 700 mg |
| Proprietary Fiber Blend | 10 g |
Certifications & Testing
Other Ingredients
Xylitol, Luo Han Guo (Momordica grosvenorii) extract
Recommended Use
Recommendations: As a dietary supplement, take 1 serving, 1-3 times daily, mixed with a beverage.
Warnings
Warning: Not to be taken by pregnant or lactating women. If you have any health condition or are taking any medication, consult your health professional before use. Keep out of the reach of children. Use only if safety seal is intact.
Frequently Asked Questions
What is Pure Encapsulations PureLean Fiber's Formulate score?
Pure Encapsulations PureLean Fiber scores 82 out of 100 (grade A-) 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 Pure Encapsulations PureLean Fiber worth it?
Pure Encapsulations PureLean Fiber scores 82/100 (grade A-). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Pure Encapsulations PureLean Fiber?
Each serving contains Magnesium (100 mg), PreticX Xylooligosacharides (700 mg), Proprietary Fiber Blend (10 g). Serving size: 2 Scoop(s). 24 servings per container.
How do I take purelean fiber?
Recommendations: As a dietary supplement, take 1 serving, 1-3 times daily, mixed with a beverage.
Who makes PureLean Fiber?
PureLean Fiber is made by Pure Encapsulations. See Formulate's full grade and product lineup for Pure Encapsulations on its brand page.
Is Pure Encapsulations PureLean Fiber third-party tested?
Pure Encapsulations lists the following certifications and testing for this product: Dairy-Free, Gluten-Free, Non-GMO, Soy-Free, Vegan, Vegetarian, cGMP Certified, Third-Party Tested.
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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.