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Doctor's Best High Absorption Magnesium (Lysinate Glycinate) vs Nature's Bounty Vitamin B-12 1,000 mcg

Nature's Bounty scores higher overall (8.5 vs 7.9 out of 10), mainly on efficacy, value and experience. Doctor's Best still leads on transparency.

Updated September 2026 from our full reviews · How we score

Front of Doctor's Best High Absorption Magnesium 240-tablet bottle
Doctor's BestHigh Absorption Magnesium (Lysinate Glycinate)
7.9
Good

A long-running Amazon favorite: 200 mg of fully chelated magnesium per serving that is easy on the gut, but the tablets are large and the full label dose exceeds the UL.

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Higher score
Front of Nature's Bounty B-12 1000 mcg 200 coated tablets bottle
Nature's BountyVitamin B-12 1,000 mcg
8.5
Excellent

A best-selling 1,000 mcg cyanocobalamin tablet at about 5 cents a day; small and easy to swallow, with no third-party seal.

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The short answer

Choose Doctor's Best if…

  • People who get stomach upset from magnesium oxide or citrate
  • Evening routines aimed at relaxation and muscle tension
  • Buyers who want a chelated form at a mid-range price
  • You care most about transparency

Choose Nature's Bounty if…

  • Adults over 50 and others at higher risk of low B12
  • People who eat few or no animal foods
  • Budget shoppers
  • You care most about efficacy, value, experience

Side by side

High Absorption Magnesium (Lysinate Glycinate)Vitamin B-12 1,000 mcg
Our score7.9 / 108.5 / 10
Efficacy (30%)7.88.8
Quality & Purity (25%)7.27.2
Value (20%)8.89.8
Experience (15%)7.69.0
Transparency (10%)8.57.5
FormTabletTablet
Serving2 tablets120 servings per container1 tablet200 servings per container
Testing & certificationsNone verifiedNone verified
DietaryVegan, Gluten-free, Soy-free, Non-GMOVegetarian, Gluten-free, Non-GMO, Soy-free, Dairy-free, Sugar-free
Key ingredients
  • Magnesium (from magnesium lysinate glycinate chelate, Albion TRAACS)200 mg (from 2,000 mg chelate)
  • Vitamin B12 (as cyanocobalamin)1,000 mcg
Flavors——
Creator video reviews51

Pros and cons

High Absorption Magnesium (Lysinate Glycinate)

  • Fully chelated magnesium lysinate glycinate made with Albion TRAACS
  • Clear elemental dose: 200 mg per two tablets
  • Vegan, gluten-free, soy-free and non-GMO
  • About $0.20 per 200 mg serving
  • The label's full dose (400 mg) exceeds the 350 mg upper limit for supplemental magnesium
  • Large tablets that some people need to split
  • No USP or NSF certification
  • Grogginess or loose stools reported by some at the full dose

Vitamin B-12 1,000 mcg

  • About $0.05 per day
  • 1,000 mcg dose compensates for limited absorption of oral B12
  • Small, coated tablets that are easy to swallow
  • Non-GMO, gluten-free and suitable for vegetarians
  • No USP or NSF certification
  • Brand site shows an outdated %DV and the Amazon listing has copy errors
  • Far more B12 than people with normal levels need

Our verdicts

High Absorption Magnesium (Lysinate Glycinate)

A well-tolerated, clearly labeled chelated magnesium at a fair price, and a sensible first choice for people who found magnesium oxide or citrate hard on the stomach. Start with one 200 mg serving rather than the label's full 400 mg, and expect large tablets.

Full review

Vitamin B-12 1,000 mcg

For most people who need extra B12, this is the simplest and cheapest effective option: a well-studied form at a dose that compensates for limited absorption, in a tablet anyone can swallow. It lacks independent certification and its listings are sloppy, but the formula itself is sound.

Full review

What creators say

Questions people ask

Is Doctor's Best better than Nature's Bounty?
In our scoring, Nature's Bounty Vitamin B-12 1,000 mcg rates higher overall (8.5 vs 7.9 out of 10). Doctor's Best leads on transparency; Nature's Bounty leads on efficacy, value and experience. Scores weigh efficacy, quality, value, experience and transparency.
Who should choose Doctor's Best over Nature's Bounty?
Our reviews suggest Doctor's Best is best for people who get stomach upset from magnesium oxide or citrate, evening routines aimed at relaxation and muscle tension and buyers who want a chelated form at a mid-range price, while Nature's Bounty is best for adults over 50 and others at higher risk of low B12, people who eat few or no animal foods and budget shoppers.

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