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Melonex Citrulline: What the First Name on the Label Tells You

Quick answer

Melonex lists L-citrulline dl-malate first in its 500 mg blend. Under the labeling rule that order means it is the largest part, so at least 167 mg per capsule. The exact amount is not printed. Studies of citrulline mostly used 3 to 8 grams a day, far above that floor.

Written by the Melonex label deskUpdated · 4 min read

The Melonex Supplement Facts panel
The Supplement Facts panel as printed on the bottle.

The math01

Why is the citrulline floor 167 mg?

Blend ingredients must be listed from largest to smallest by weight, so the first of three cannot be less than a third of 500 mg 1.

A third of 500 is about 167 mg. The ceiling is the whole 500 mg, which is a wide gap. The label prints neither number. We show the arithmetic, not a measured amount.

How does that compare with study doses?

The bars show the most one capsule can hold next to the grams used in trials.

  • L-Citrulline DL-Malate

    At most 16.7% of the low study amount
    Most one Melonex capsule can hold (label order)500 mg
    3 to 8 g a day of citrulline, 1 to 16 weeks (Cleveland Clinic summary)3,000-8,000 mg

    The label prints no amount for this name; 500 mg is the ceiling its place in the list allows. 2

  • L-Arginine alpha-ketoglutarate

    At most 6.2% of the low study amount
    Most one Melonex capsule can hold (label order)250 mg
    4 g per dose, 12 g a day, in a 35-man sports trial4,000-12,000 mg

    The label prints no amount for this name; 250 mg is the ceiling its place in the list allows. 3

Red bars: the most one daily capsule can hold of that name, worked out from the label order (the real amount is not printed). Green bars: the amount used in the study we found, set to full width. A studied dose says what was tested, not what works for you, and no study tested Melonex.

Pooled trials used 3 to 8 g a day for one to 16 weeks 2. One capsule at the label ceiling is 0.5 g. Even two capsules fall well short of that range, and that is before counting the other two names.

What do trials of citrulline show?

Mixed results, from small studies of citrulline on its own.

Citrulline analyses, read for this post
AnalysisFinding
8 trials, 3 to 9 g a day 4Average systolic drop of 4.10 mm Hg; the diastolic change was not significant overall
5 interventions 5No significant change in brachial pressure
8 trials, 176 peopleBetter flow-mediated dilation; arterial stiffness measure not significantly improved

None of these tested Melonex. The authors of the second one wrote that citrulline had no beneficial effect on pressure, so the field is split.

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What does the malate part mean?

Malate is a salt partner, malic acid joined to citrulline. The label writes it as dl-malate.

  1. Swallowed

    The salt separates in the gut.

  2. Absorbed

    Citrulline is readily absorbed and partly turns into arginine.

  3. Used

    Arginine feeds the body's making of nitric oxide 2.

The citrulline page holds the full profile.

Should citrulline decide your purchase?

Not alone. The label does not say how much you get, and possible side effects include bloating, cramping and diarrhea 2.

Ask your pharmacist about your medicines first, and keep taking them. The Supplement Facts page shows the label line by line.

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FAQ02

Melonex questions people ask

How much citrulline is in one Melonex capsule?

The label does not say. The order implies at least 167 mg of the 500 mg blend, and possibly up to all of it.

Is the citrulline in Melonex the same as in watermelon?

Citrulline is the same amino acid, but a capsule with an undisclosed amount cannot be compared with a fruit serving.

What is dl-malate on the Melonex label?

It is the salt form: citrulline joined with malic acid. The label does not give the split between the two.

Does citrulline interact with medicines?

One clinic page names no drug interactions, but ask your pharmacist anyway since the other two names in the blend do.

Who wrote this03

Written and reviewed by

Written byThe Melonex label deskMelonexdaily, USA Authorized Melonex Retailer

Pages built from the label, the sales page and linked NIH, FDA, CDC, FTC and peer-reviewed sources.

Medically reviewed byDr. Andres Palacio, MD, PhysicianRole: Medical reviewerReview date: October 31, 2026

Last updated . Read our editorial standards and how we check reviews. This website is the information site for a USA Authorized Melonex Retailer. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.

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