MemoHoney Dosage: Why 640 mg a Capsule Sits Below the Gram Trials

By MemoHoney Team Revised September 30, 2026 8 min read 1765 words · Reviewed by Dr. Joette James, PhD

Where 640 comes from

Five rows on the panel carry no Daily Value, because they are amino-acid forms: L-arginine 200 mg, L-arginine AKG 200 mg, L-citrulline HCl 100 mg, L-citrulline malate 100 mg and beta alanine 40 mg. Added together, they come to 640 mg. With the two nutrient rows, niacin at 7.5 mg and calcium at 18 mg, the whole panel declares 665.5 mg of ingredients in each capsule.

The 640 is the weight of the forms, not of amino acid alone. Arginine AKG 2:1 is two arginines bound to one alpha-ketoglutarate, the hydrochloride carries hydrochloric acid, and the malate carries malic acid. Counted out by molecular weight, those partners leave about 520 to 540 mg of amino acid in the capsule, a range because the panel does not print the malate row’s ratio. The row-by-row comparison below uses the printed amounts, which is the kinder reading of the gap.

Those are real amounts, printed row by row, and that is the reason this comparison can be made at all. A label that hid its amounts in a blend could not be checked against anything. This one can.

Milligrams and grams

A gram is a thousand milligrams. That is the whole of the arithmetic, and it is easy to lose on a label, because 200 mg looks like a large number and 6.4 g looks like a small one. The first is a fifth of a gram. The second is thirty-two times bigger.

The trials behind arginine, citrulline and beta-alanine were almost all dosed in grams a day, often several grams taken two or three times daily. That is not unusual for amino acids: they are nutrients the body handles in bulk, and it takes gram amounts to move their blood levels in a way a trial can measure.

Row by row

L-arginine, 200 mg. The one trial of arginine and cognition, a 38-person pilot in older adults, gave 6.4 g a day for thirty days. The capsule row is about a thirty-second of that.

L-arginine AKG, 200 mg. The controlled trials of arginine alpha-ketoglutarate, including the eight-week pharmacokinetic and performance trial, used 12 g a day, taken as 4 g three times daily. The capsule row is a sixtieth of that, and part of the row is the carrier.

L-citrulline HCl, 100 mg. Across the citrulline blood-pressure meta-analysis, doses ran from 3 to 9 g a day, and only the arms at 6 g or more moved diastolic blood pressure. The capsule row is a sixtieth of that 6 g threshold.

L-citrulline malate, 100 mg. A pilot trial in older women gave 3 g a day for six weeks alongside exercise. The capsule row is a thirtieth of that.

Beta alanine, 40 mg. The older-adult imaging trial gave 2.4 g a day, and the sports-nutrition position stand recommends 4 to 6 g a day for at least four weeks. The capsule row is a sixtieth of the imaging-trial dose.

Research doses are the daily amounts the cited trials gave. No trial has tested this capsule or these amounts.

MemoHoney: every amount printed, so you can judge it

Seven rows, 665.5 mg declared, one capsule a day. A 60-day window from purchase to decide for yourself.

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The rows grouped by pathway

Read by what they feed, the five rows fall into two groups. Arginine, arginine AKG and the two citrullines all lead to nitric oxide: arginine directly, citrulline by being recycled into arginine. Together those four rows are printed at 600 mg a capsule; with the AKG, hydrochloride and malate split off, about 480 to 500 mg of that is arginine and citrulline themselves. Beta alanine, at 40 mg, leads to carnosine, and it stands on its own.

Grouping them this way does not change the comparison with the trials, which each tested a single ingredient. It does explain the shape of the formula: most of the capsule is given to one pathway, spread across four forms, with a smaller amount for the second and a vitamin alongside.

Why one capsule cannot close the gap

The simplest reason is physical. The panel declares 665.5 mg of ingredients, and the capsule also holds its shell and two flow agents. A single capsule cannot carry the several grams a day the amino-acid trials used; that would take a scoop of powder, or a handful of capsules at every meal.

The second reason is that the formula does something different. It combines six ingredients in one daily capsule, alongside a vitamin at a nutrition-label amount. The trials each tested one ingredient, at a dose chosen to produce a measurable change in the blood, in muscle or on a scan. A combination at milligram amounts is a different product from any of them.

Neither reason is hidden. The amounts are on the label and the trial doses are in the public record. What follows from putting them together is the part a buyer should know before ordering.

What the trials actually measured

It helps to know what each trial was measuring, because very few of them measured memory. The arginine pilot is the exception: it gave cognitive tests to older adults. The arginine AKG trials measured blood levels, blood flow and exercise performance in trained men. The citrulline analysis measured blood pressure. The citrulline malate pilot measured leg strength and function in older women who were also exercising. The beta-alanine imaging trial measured changes on brain scans, which is closer to the brain than any of the others but is still an image, not a memory test.

So the research behind these five rows is mostly about circulation, muscle and blood chemistry, at gram doses, over days to weeks. That is useful background for understanding why the ingredients are grouped as they are, since arginine and citrulline both feed nitric oxide. It is not a set of memory results.

What the trials do and do not tell you

A trial result belongs to the dose, the people and the length of time it tested. The arginine pilot tells you what 6.4 g a day did for thirty days in older adults with cognitive impairment. The citrulline analysis tells you what 6 g a day or more did to blood pressure. None of them tells you what 200 mg or 100 mg does, because nobody gave those amounts.

So the trials are not evidence that the capsule works, and this website never uses them that way. They are the map of where each ingredient has been studied and at what scale. That is useful in its own right: it tells you what each ingredient is, what it has been tested for, and how far the printed amount sits from the tested one.

What a buyer can fairly expect

What the panel supports is modest: a once-daily capsule that combines arginine, two forms of citrulline, beta-alanine and a vitamin at a nutrition amount, taken as a routine. Buyers on this desk most often describe 3–6 weeks before they notice a change, and the reviews that say “fair at a month” outnumber the rest.

The fair way to judge it is your own trial, run properly: a baseline on day one, the same routine every day, and a decision inside the 60-day window from purchase. The guarantee page sets out how a claim works, and the pricing page compares the packs. If gram doses of a single amino acid are what you are after, a single-ingredient powder is the product that matches the trials.

Sources cited in this post