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The formula

What Are the Melonex Ingredients?

By The Melonex Team · Updated October 16, 2026

Answer: Melonex's brand names three amino acid compounds: L-Citrulline DL-Malate, L-Arginine Alpha-Ketoglutarate (as a dihydrate) and L-Arginine Hydrochloride. Together they supply arginine, which the blood vessel lining uses to make nitric oxide. Per-serving amounts and the full list are on the Supplement Facts panel of the bottle.

IngredientForm / roleEvidence level
L-Citrulline DL-MalateAmino acid · arginine precursorSmall trials, mixed
L-Arginine Alpha-KetoglutarateAmino acid · arginine bound to AKGLimited, mostly sports studies
L-Arginine HClAmino acid · nitric oxide substrateSmall, mixed; modest effects

Read these cautions first

Blood pressure medicine, nitrates and erectile dysfunction drugs: arginine may add to their blood-pressure-lowering effect. Ask your doctor before use; you may be asked to check your pressure more often. Signs of pressure falling too low include dizziness and lightheadedness when you stand.

After a heart attack: L-arginine is not advised after a recent heart attack unless your cardiologist approves it. The same applies if you have heart failure or are waiting for a procedure.

Kidney, liver, pregnancy and stomach: ask your doctor before use if you have kidney or liver disease, diabetes, low blood pressure or a history of cold sores, or if you are pregnant or nursing. Stomach upset, bloating and loose stools are the most common complaints with amino acids (MedlinePlus: Dietary Supplements).

L-Citrulline DL-Malate

Citrulline is an amino acid found in watermelon. The kidneys turn it into arginine, and studies show citrulline can raise blood arginine levels more steadily than arginine itself. Small trials look at blood flow and blood pressure with mixed, modest results. The malate part is a salt of malic acid, a compound found in fruit. Read the source.

L-Arginine Alpha-Ketoglutarate

Arginine paired with alpha-ketoglutarate (AKG), a compound the body uses in its energy cycle. It is popular in sports formulas. Research on this specific form is limited and mostly in athletes, so we treat it as a second source of arginine rather than a headline. Read the source.

L-Arginine HCl

Arginine is the amino acid the lining of your blood vessels uses to make nitric oxide, the signal that tells vessel walls to relax. Reviews of arginine supplements report small, inconsistent effects on blood pressure. It can add to blood pressure medicines, nitrates and erectile dysfunction drugs, so ask your doctor first. Read the source.

What about the capsule itself?

The other-ingredients line lists the capsule shell and any flow agents. Check it if you avoid gelatin, specific colors or allergens.

Why we do not print milligrams here

Some sites quote figures they cannot verify. We would rather point you to the one place the amounts are guaranteed accurate: the Supplement Facts panel on the bottle you receive. The NIH label guide shows how to read the panel when it arrives, and our Melonex label guide walks through it line by line.

Seen the list? Watch it in motion on how Melonex works, read what Melonex is, check the Melonex benefits and Melonex reviews, or go to packages and Melonex sale prices.

Related questions

Is L-arginine safe?

In usual supplement amounts it is generally well tolerated by healthy adults. It is not advised after a recent heart attack without medical approval and can interact with blood pressure medicines, nitrates and erectile dysfunction drugs.

Does Melonex contain caffeine or stimulants?

None are named among the ingredients. Check the other-ingredients line of your bottle.

Is Melonex vegan or gluten-free?

The capsule shell and other ingredients are listed on your bottle's panel. Check it if you avoid gelatin, gluten or specific additives.

From The Melonex Team. Every page is drafted in-house in plain first-person language. Capsule count, serving and the three amino acid compounds are matched to the label; heart, blood pressure and safety points link to an NIH, NHLBI, CDC, American Heart Association, MedlinePlus or FDA page you can open yourself. Our five writing rules are public. Last reviewed October 16, 2026.

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