Doctor's Best High Absorption Magnesium, Lysinate Glycinate, 240 Tablets

Exploded view

Part SP-01 · callouts from the label and the listing · Oct 15, 2026

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1. 1Screw capAn orange cap on a wide-mouth bottle that holds all 240 tablets.
2. 2Lysinate Glycinate, 100% ChelatedThe form: magnesium bound to the amino acids lysine and glycine rather than supplied as a plain salt such as an oxide.
3. 3200 mg Per Serving · 240 TabletsA serving is two tablets of 100 mg magnesium each, so the bottle holds 120 servings.
4. 4Albion Minerals sealMarks the chelate as Albion’s TRAACS ingredient; Doctor’s Best notes these are trademarks of Balchem Corporation.

01How it’s taken, and what’s in a serving

Nothing here runs on a motor: a serving is two tablets, and the useful questions are how much magnesium they carry, in what form, and how that adds up across a day.

1. Two tablets, 200 mg

   Each serving lists 2,000 mg of magnesium lysinate glycinate chelate, which supplies 200 mg of magnesium itself; the remaining weight is the amino acids the magnesium is bound to [1][2]. The 48% Daily Value on the label is 200 mg set against the 420 mg reference figure used on labels.

2. A chelated form

   “Chelated” means each magnesium atom is held by amino acids. The brand calls the product 100% chelated and markets it as better absorbed than other forms; that comparison is the brand’s, and we did not verify it. NIH’s consumer fact sheet names aspartate, citrate, lactate and chloride as forms that are more easily absorbed and does not rank glycinate either way [3].

3. Tablet-making ingredients

   The other ingredients are common tablet excipients: cellulose and hypromellose as binders and coating, croscarmellose sodium to help the tablet break apart, and magnesium stearate, stearic acid and silicon dioxide as flow aids. The label lists them; it does not state their roles, so those are the usual ones, not the brand’s description.

4. Adding up the day

   Magnesium in food does not count toward the federal upper limit; magnesium from supplements and medicines does. For adults that limit is 350 mg a day [3]. One serving (200 mg) sits under it; the label’s full direction of two tablets twice daily (400 mg) sits above it.

02Fit check

03What the label and the NIH fact sheet say

NIH’s Office of Dietary Supplements puts the recommended daily amount at 400–420 mg for adult men and 310–320 mg for adult women, counting food, drinks and supplements together [3]. It notes that many people in the United States eat less than that, but that total intake is generally above the recommended amounts once supplements are counted. Legumes, nuts, seeds, whole grains, green leafy vegetables and fortified cereals are the main food sources it lists.

On the downside, the same fact sheet says high intakes from supplements and medicines can cause diarrhea, nausea and abdominal cramping, and that extremely high intakes can disturb the heartbeat [3]. That is the reason the upper limit applies only to supplemental magnesium, and the reason we flag the label’s own daily direction.

The bottle and the listing also make function claims about muscles and rest. Like every such claim on a supplement, those have not been evaluated by the FDA, and we do not repeat them. The label carries the standard notice: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Under federal law the FDA does not approve dietary supplements before they are marketed and does not test them before they are sold [4].

04Taking and storing it

These steps follow the label and the NIH fact sheet; they describe use and storage, not a promised result.

1. Check your medicines first

   If you take a bisphosphonate, an antibiotic, a diuretic or a long-term acid-reflux prescription, ask your pharmacist how to time magnesium around it [3].

2. Count every source

   Add any magnesium in a multivitamin, an antacid or a laxative to the tablets before comparing your total with the 350 mg limit for supplements and medicines.

3. Take the serving

   One serving is two tablets. The label does not tie them to meals; if loose stools follow, that is one of the effects NIH lists for higher supplemental doses [3].

4. Store it dry

   Keep the bottle closed in a cool, dry place, as the label directs [2].

05Price and where it is sold

On Oct 15, 2026 the 240-tablet bottle was $23.99 on Amazon, sold by Doctor’s Best and shipped from Amazon, in stock, with the return line “Non-returnable due to Food safety reasons” (a refund or replacement only if the item arrives damaged or defective). A subscribe-and-save price was also offered. That works out to about 20 cents per two-tablet serving. See the 240-tablet listing on Amazon. As an Amazon Associate we earn from qualifying purchases.

06Who should look elsewhere

• Children, unless a pediatric clinician has set a dose: their upper limits are far below an adult serving [3]
• Anyone with reduced kidney function, or on interacting medicines, until a clinician or pharmacist has reviewed it
• Anyone who wants smaller steps than 100 mg: Doctor’s Best also lists a 52.5 mg capsule version of this chelate [2]

Sources

1. Amazon. Doctor’s Best High Absorption Magnesium, 240 tablets, listing B000BD0RT0: Supplement Facts image, product details, seller and return line. Accessed Oct 15, 2026 (linked in the price section above).
2. Doctor’s Best. High Absorption Magnesium, 100 mg, 240 Tablets: Supplement Facts, other ingredients, suggested adult use, storage. Accessed Oct 15, 2026. link
3. NIH Office of Dietary Supplements. Magnesium: Fact Sheet for Consumers (recommended amounts, upper limits, side effects, medicine interactions). Updated Mar 22, 2021; accessed Oct 15, 2026. link
4. U.S. Food and Drug Administration. Questions and Answers on Dietary Supplements (premarket review, testing, the required disclaimer). Accessed Oct 15, 2026. link

This entry is educational and is not medical advice. It describes what is in a product and what its label says; it does not say the product will change any health condition. Talk to a clinician or pharmacist before taking a supplement if you take medication, are pregnant or breastfeeding, or manage a health condition.