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What Is DL-Malate? The Other Half of Line One
What is DL-malate? It is the malic acid partner bonded to citrulline in the first line of the Melonex blend. Malate is a Krebs-cycle compound the body already makes. The DL tag marks a mix of two mirror-image forms. It adds weight to the line, and it is not the citrulline.
Written by the Melonex numbers deskUpdated · 4 min read

01The basics
What is DL-malate on a supplement label?
DL-malate is the salt form of malic acid, and on the Melonex label it is paired with L-citrulline.
Malic acid is a common food acid. Its salt form is called malate. NIH describes malate as a Krebs-cycle intermediate, a step in how cells turn food into energy (NIH ODS, Supplements for Exercise).
The "DL" part is a chemistry tag. Many molecules come in two mirror-image shapes, called D and L. DL means the product mixes both. Melonex does not say how much of each its malate holds.
Put together, "L-Citrulline DL-Malate" is one ingredient with two parts: an amino acid and an acid partner.
Drawing, not data: an even split shown for scale. The label prints only the 500 mg total.
- L-citrulline DL-malateeven split ~167 mg · ceiling ≤500 mg
- L-arginine AKGeven split ~167 mg · ceiling ≤250 mg
- L-arginine HCleven split ~167 mg · ceiling ≤167 mg
Also in the capsule (no amounts printed)
- Hydroxypropyl methylcelluloseThe vegetable capsule shell (a plant-cellulose material)
- Microcrystalline celluloseA plant-fiber filler that bulks out the powder
- Magnesium stearateA flow aid that stops powder sticking to machines
03What it does
Does DL-malate do anything on its own?
No source we read shows that DL-malate at capsule size does anything for blood pressure or the heart.
Malate is part of normal cell chemistry, but food and the body already supply it. NIH says research does not strongly support citrulline malate for exercise performance (NIH ODS, Supplements for Exercise).
Blood pressure trials of citrulline used the plain amino acid at 3 to 9 g a day (Avicenna J Phytomed 2019, L-citrulline and BP meta-analysis). They did not test the malate form.
Why makers use it
Makers often use salts to handle an amino acid more easily. Melonex does not say why it chose this one.
Where it stops
It carries no heart claim of its own, and the label makes none for it.
What to check
Ask the seller for the ratio and a lab report. Melonex publishes neither.
04Safety
Is DL-malate safe to take?
Malate itself is a normal body compound, but the citrulline attached to it still needs the usual cautions.
The malate part is not the concern on this label. The cautions come from citrulline: it may add to blood pressure medicines, nitrates and ED drugs (WebMD, L-citrulline).
The label tells pregnant or nursing mothers, anyone under 18 and anyone with a medical condition to consult a physician. Keep taking prescribed medicine and tell your doctor about every supplement.
- Read the full blend on the Melonex label.
- Check the interaction table on the side effects page.
05The takeaway
What should you ask about DL-malate before buying?
Ask two things: how much of line one is citrulline, and who tested it.
The ratio sets the real citrulline dose. The tester sets the trust. The seller lists lot and analysis references, but we have no lab report, so treat them as the seller's own notes. Our citrulline malate guide shows the full 57% math.
The 3- and 6-bottle packs ship free per the seller's order page. Confirm prices at checkout.


Prices listed on the seller's order page; confirm at checkout. The 2-bottle kit costs $158, with $9.99 shipping. Ask your doctor about your medicines first. 60-day money-back guarantee per the seller.
Melonex is not a treatment; it is a dietary supplement. Ask your doctor or pharmacist first if you take blood-pressure medicine, nitrates for chest pain, an erectile-dysfunction drug such as sildenafil or tadalafil, a potassium-sparing diuretic (amiloride, spironolactone, triamterene), a blood thinner, or diabetes medicine, or if you have had a recent heart attack. Arginine and citrulline can add to these. Keep taking prescribed medicine. See side effects and interactions.
06FAQ
Melonex questions people ask
Is DL-malate the same as malic acid?
Nearly. Malic acid is the acid; malate is its salt form. DL-malate is a salt made from a mix of both mirror-image forms. Melonex prints only the name L-Citrulline DL-Malate and no ratio of its parts.
Does DL-malate give energy?
Malate takes part in the Krebs cycle, which makes cell energy (NIH ODS, Supplements for Exercise). That does not mean a capsule's worth gives you energy. NIH says citrulline malate lacks strong support for exercise performance. Melonex makes no energy claim on its label.
Why do makers pair citrulline with malate?
Salts are a common way to make an amino acid easier to handle in a capsule. We found no maker statement for Melonex, so the reason is not confirmed. The pairing does lower the citrulline share to about 57% by weight (NIH ODS, Supplements for Exercise).
Is there a vegan or allergen note for DL-malate?
The Melonex label lists no allergen warning, and its capsule is plant-based HPMC. The sources we read do not say how the malate is made. Ask the seller if sourcing matters to you.
07Who wrote this
Written and reviewed by
Pages built from the label, the seller's materials and linked NIH, FDA, CDC, AHA, FTC and peer-reviewed sources.
Last updated . Read how we write and how we check reviews. This website is run by Melonexheart, which describes itself as a U.S. authorized Melonex merchant. It is not the manufacturer or the label's distributor, and we cannot independently verify the 'authorized' status. We are paid when you buy through our order links.
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