BioStacks
XYMOGEN

OptiFiber Lean

6 Capsules · 30 servings · $2.40/serving

iHerbAmazon

Every active here is dosed below the amount studied to work. See how each one compares in the breakdown below.

Ingredients (1)

Dietary Fiber

30%

Dose

3 g

Target

10–30 g

Form

—

Other Ingredients (4)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

HypromelloseCapsule

Plant-derived capsule material from cellulose

Ascorbyl PalmitateAntioxidant

Fat-soluble form of vitamin C used as preservative

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

How to Take It

Take it anytime

Take with plenty of water. Fiber binds other things in the gut, so give it a 1–2 hour gap either side.

With food
Keep it away from medication and mineral supplements

On the label

Take three to six capsules once per day, or take three capsules 30 to 60 minutes before each of your two biggest meals, or use as directed by your healthcare practitioner.

General guidance based on the ingredients, not a substitute for the label or your doctor.

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Fiber Delights (Vanilla)

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Fiber Formula

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Fiber Fusion Daily

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28

Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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