L-Histidine 500 mg

Name: L-Histidine 500 mg
Brand: Douglas Laboratories

capsule60 servings1 Capsule(s)

Gluten Free

/100top label

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Supplement Facts

Ingredient	Amount	% DV% Daily Value — how much of the recommended daily intake one serving provides, based on a 2,000 calorie diet. 100% = full daily need. Values over 100% are common for water-soluble vitamins (B, C) and generally safe. Values over 200% are highlighted.
L-Histidine Hydrochloride	500 mg	—

Other ingredients: Microcrystalline Cellulose, Gelatin, Ascorbyl Palmitate

Score Breakdown

Dosage TransparencyAre all ingredient amounts explicitly listed on the label? Are %DV values provided where applicable? This measures transparency of dosing, not clinical efficacy.

30/35

Label TransparencyHow complete is the labeling? Checks serving info, dietary certifications, and whether any doses are hidden behind proprietary blends.

20/25

Formulation CleanlinessHow clean are the inactive ingredients? Penalizes artificial colors, sweeteners, titanium dioxide. Rewards vegan, gluten-free, organic.

25/25

Ingredient ProfileFormula composition signals: focused vs comprehensive, use of branded/patented forms (KSM-66, Albion, etc.), explicit dosing.

5/15

This score evaluates label quality — dosage disclosure, transparency, cleanliness of inactive ingredients, and formula composition. It does not measure clinical efficacy, bioavailability, or third-party testing. Read full methodology

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