Formula · 10.0

Brand · 9.0

Doctor’s Best · methylcobalamin · US

Doctor’s Best Fully Active B12 1500 mcg

Doctor’s Best Fully Active B12 1500 mcg
10.0

LabReadAI label score

How the score is calculated
  • Effect and evidence1.0Effect supported by studies
  • Absorbed dose vs reference intake1.050000 % of the reference intake per serving
  • Completeness for the purpose1.0For “B12 deficiency” — 100 %; a broad formula across 3 purposes
  • Safety and purity1.0No excess doses or debatable ingredients; excipients: 2
  • adults
  • vegans
  • pregnancyallowed per the leaflet
  • vegetariansplant-based capsule
  • childrenage-based dose, with a doctor
Free from:
  • artificial sweeteners · by the listthe list has no ingredient of the “acesulfame potassium, aspartame, sucralose” group — a calorie-free sweetener, usually paired with sucralose or aspartame for taste. Permitted, a preference question.
  • colorants E102/E120/E150 · by the listthe list has no ingredient of the “caramel colour, carmine, tartrazine” group — a brown colour from caramelised sugar: it tints syrups and coatings and does not affect the action.
  • carrageenan · by the listthe list has no ingredient of the “carrageenan” group — a thickener from red seaweed. It is permitted but debated: in animal studies the degraded form irritated the gut, so people with inflammatory bowel disease are sometimes advised to avoid it. For food-grade carrageenan there is no such proof.
  • gelatin · by the listthe list has no ingredient of the “gelatin (capsule)” group — capsule shell of animal gelatin (usually bovine or fish) — not for vegetarians; for halal/kosher the source must be confirmed with the maker
  • magnesium stearate · by the listthe list has no ingredient of the “magnesium stearate” group — tablet-pressing lubricant; contains negligible magnesium, not counted as the element; in powders — a slip agent; does not clog pores
  • soy lecithin · by the listthe list has no ingredient of the “soy lecithin” group — an emulsifier from soy: it binds fats with water and keeps a capsule from separating. With a soy allergy it is a reason to check the list.
  • titanium dioxide (E171) · by the listthe list has no ingredient of the “titanium dioxide (E171)” group — white coating pigment; banned as a food additive in the EU since 2022, permitted in Russia and the US
  • gelatin in the coating · by the listthe list has no ingredient of the “vegetarian coating” group — a plant-based tablet coating instead of gelatin; it keeps moisture out and makes swallowing easier
What for: Anaemia comes from a lack of iron, folate or B12 — a blood test shows which. A complex does the job if it has iron, folate and B12; vitamin C improves iron absorption, copper is rarely needed. Iron is not taken without a test.
When:
  • morning
in the morning, with or without food
When to expect an effect: fatigue, numbness — 4–8 weeks; blood test — 2–3 months
What is normal: bright yellow urine with B-complexes

Ingredients — 3 components · 1 works

What works: 1 of 3 ingredients: vitamin b12. Anaemia comes from a lack of iron, folate or B12 — a blood test shows which. A complex does the job if it has iron, folate and B12; vitamin C improves iron absorption, copper is rarely needed. Iron is not taken without a test.

Strengths: effect and evidence, absorbed dose vs reference intake, completeness for the purpose, safety and purity

Questions: no debatable ingredients in the formula

  • Supplement Facts label wording · the heading of the label’s facts table — the per-serving numbers follow
  • Serving Size 1 Veggie Cap label wording · serving size: how many tablets or capsules count as one serving; all numbers below are per serving
  • Vitamin B12 (as methylcobalamin) 1,500 mcg works · the active ingredient — what the product is for; form: methylcobalamin
  • Other Ingredients: microcrystalline cellulose base: coating, fillers · filler that gives the tablet its bulk
  • hypromellose (vegetarian capsule base: coating, fillers · plant-based capsule or tablet coating

Doctor’s Best Fully Active B12 1500 mcg is vitamin b12 as methylcobalamin: 1500 mcg per serving of 1 capsule. That is 50000 % of the adult daily intake. The form absorbs well and usually does not loosen stools. The formula has 3 ingredients, 1 of which does the work; the rest is coating and fillers. Anaemia comes from a lack of iron, folate or B12 — a blood test shows which. A complex does the job if it has iron, folate and B12; vitamin C improves iron absorption, copper is rarely needed. Iron is not taken without a test. By the list, no artificial sweeteners, colorants E102/E120/E150, carrageenan, gelatin, magnesium stearate, soy lecithin, titanium dioxide (E171), gelatin in the coating. Suitable for: adults, vegans, pregnancy, vegetarians. children — ask a doctor. Use: in the morning, with or without food. When to expect an effect: fatigue, numbness — 4–8 weeks; blood test — 2–3 months. Label score — 10.0 out of 10 (every question about the formula is at its maximum).

Who it does not suit

When to stop: acne-like rash at high doses — reduce

Is this supplement right for you?

The score describes the product, not you: whether you need this magnesium, iron or vitamin D is decided by your blood tests. Tell us about yourself, upload your CBC and blood chemistry, answer a few questions — we will go through every ingredient by its chemistry and biology and say whether the product suits you and at what dose.

Supplement matchDecode my tests