BioStacks
Kirkland Signature

Vitamin B-12

1 Tablet · 360 servings · $0.06/serving

80 / 100Excellent

Best for

Score Breakdown

Formulation
92
Safety
87
Final score
80/100

Ingredients (1)

Vitamin B12

100%

Dose

1200 mcg

Target

250–5000 mcg

Form

Premium

Other Ingredients (6)

IsomaltSweetener

A poorly-absorbed sugar alcohol that can cause bloating, gas, and laxative effects at higher doses (EFSA notes laxative threshold for polyols). Tolerable for most, but cumulative across products.

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

CrospovidoneDisintegrant

Cross-linked synthetic polymer used as a tablet disintegrant to help tablets break apart quickly in the stomach

Malic AcidAcidulant

Naturally occurring organic acid found in apples, used as a flavor enhancer and acidulant in supplements

Stevia ExtractSweetener

Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana

cherry flavour

Not reviewed yet

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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.