Ingredients
Melonex Ingredients: The Full List, Line by Line
The Melonex ingredients list has six lines. Three are in a 500 mg proprietary blend: L-citrulline DL-malate, L-arginine AKG and L-arginine HCl. Three are helpers: hydroxypropyl methylcellulose, microcrystalline cellulose and magnesium stearate. Single amounts are not printed. Studies used grams, and no trial has tested Melonex.
Written by the Melonex numbers deskUpdated
01The list
What is the Melonex ingredients list?
The Melonex ingredients list names three active lines and three other ingredients. Nothing else is printed.
The active lines sit in a blend that weighs 500 mg per capsule. The label order is L-citrulline DL-malate, L-arginine (alpha-ketoglutarate dihydrate) and L-arginine HCL. That order is by weight, most to least (21 CFR 101.36 (proprietary blends)).
The other ingredients are hydroxypropyl methylcellulose (the capsule), microcrystalline cellulose and magnesium stearate. No herb, vitamin, mineral or fruit extract is listed.
| # | Ingredient | Role |
|---|---|---|
| 1 | L-citrulline DL-malate | Blend |
| 2 | L-arginine AKG | Blend |
| 3 | L-arginine HCl | Blend |
| 4 | Hydroxypropyl methylcellulose | Capsule |
| 5 | Microcrystalline cellulose | Filler |
| 6 | Magnesium stearate | Flow aid |
02The formula
What is the Melonex formula, and how is it split?
The Melonex formula is a 500 mg blend with no single amounts, so the label order sets a ceiling for each line.
Line 1 can weigh at most 500 mg, line 2 at most 250 mg and line 3 at most 167 mg. An even split is about 167 mg each. Lines 2 and 3 together cannot pass 333 mg.
- Hydroxypropyl methylcellulose The vegetable capsule shell (a plant-cellulose material)
- Microcrystalline cellulose A plant-fiber filler that bulks out the powder
- Magnesium stearate A flow aid that stops powder sticking to machines
From the Supplement Facts panel. The three blend lines are listed from most to least by weight (21 CFR 101.36 (proprietary blends)), so each "≤" figure is a ceiling per capsule, not the real amount. The other ingredients are not part of the 500 mg.
03Go deeper
Which Melonex ingredient has its own page?
Five pages cover the formula: one per blend line, one for the capsule and helpers, and one comparing arginine with citrulline.
-
≤500 mg01
L-citrulline DL-malate
#1 of 3 in the 500 mg blend
The amino acid L-citrulline bound to malate (a Krebs-cycle compound)
Evidence: Small systolic drop (about 4 mm Hg) in 8 small trials at gram dosesA crop of the label's blend text. No ingredient photo was supplied.
Full profile -
≤250 mg02L-arginine AKG
#2 of 3 in the 500 mg blend
L-arginine paired with alpha-ketoglutarate, a Krebs-cycle compound (AAKG)
Evidence: No blood-flow or performance benefit in AAKG studiesThe Supplement Facts box from the label.
Full profile -
≤167 mg03L-arginine HCl
#3 of 3 in the 500 mg blend
L-arginine as the hydrochloride salt
Evidence: About 5 mm Hg systolic drop in 11 small trials at gram dosesThe label's caution panel: this line carries the strongest safety notes.
Full profile -
No amounts04Capsule and other ingredients
The capsule shell and two helpers
The vegetable capsule shell, a filler and a flow aid
Label facts and researchA crop of the label's other-ingredients line and FDA box.
Full profile -
3 lines05Arginine vs citrulline
Two amino acids, one capsule
Side by side: what each amino acid does and where the evidence stops
Label facts and researchThe label front, where the three support words are printed.
Full profile
04Plain words
What are citrulline and arginine?
Citrulline and arginine are amino acids, the building blocks of protein. The body can turn citrulline into arginine.
The label pairs each one with a partner: malate for citrulline, alpha-ketoglutarate (AKG) for one arginine and hydrochloride (HCl) for the other. NIH says citrulline malate is about 57% citrulline by weight (NIH ODS, Supplements for Exercise). Melonex prints no ratio.
Two of the three lines are arginine in different forms. That is why the pair is summed in the ceiling math.
- Malate and AKG are Krebs-cycle compounds
- HCl means the arginine is a hydrochloride salt
- Each partner adds weight, so the amino acid is less than the line
05Dose vs research
How do Melonex ingredient amounts compare with studies?
Studies used grams a day. One capsule's ceilings are in milligrams, far below the low end of each study range.
L-citrulline lowered systolic pressure by about 4 mm Hg in 8 small trials at 3-9 g a day (Avicenna J Phytomed 2019, L-citrulline and BP meta-analysis). L-arginine did so by about 5 mm Hg in 11 small trials at 4-24 g a day (Am Heart J 2011, L-arginine and BP meta-analysis). A 3,000 mg dose of AAKG did nothing for strength in 16 men (J Int Soc Sports Nutr 2012, AAKG).
L-citrulline DL-malate
≤500 mgplace 1 of 3One capsule's ceiling is 17% of the low end of the studied dose. (Avicenna J Phytomed 2019, L-citrulline and BP meta-analysis)
Both arginine lines together
≤333 mglines 2 and 3 togetherOne capsule's ceiling is 8% of the low end of the studied dose. (Am Heart J 2011, L-arginine and BP meta-analysis)
L-arginine AKG
≤250 mgplace 2 of 3One capsule's ceiling is 8% of the low end of the studied dose. (J Int Soc Sports Nutr 2012, AAKG)
Coral bars: the most one capsule (and the 2-capsule label maximum) can hold, from the label order (21 CFR 101.36 (proprietary blends)). Real amounts are not printed and are likely lower. Teal bars: daily amounts used in studies; the pale extension shows a range. The weights on the label include the malate, alpha-ketoglutarate and HCl parts, so the pure amino acid is less again.
Even two capsules, the label maximum, stay under every bar. No trial tested Melonex.
06Safety notes
Are Melonex ingredients safe with medicines?
Ask a pharmacist first if you take blood-pressure drugs, nitrates or erectile-dysfunction drugs. Arginine and citrulline can add to them.
- Pressure can drop too low with blood-pressure drugs (Mayo Clinic, L-arginine) (WebMD, L-citrulline)
- Do not combine arginine with potassium-sparing diuretics (Mayo Clinic, L-arginine)
- Arginine is not recommended after a recent heart attack (ACC, VINTAGE MI trial summary)
Keep taking prescribed medicine as directed. The label asks pregnant or nursing mothers, anyone under 18 and anyone with a known condition to consult a physician. The full list is on side effects and interactions.
07Next step
Where can you see the label and the price?
The word-for-word label is on one page and the seller's pack prices on another, from $49 a bottle.
Read the label, decoded first, then the price page. These prices are from the seller's materials, so confirm them at checkout.
08FAQ
Ingredient questions
What are the ingredients in Melonex?
Three blend lines: L-citrulline DL-malate, L-arginine alpha-ketoglutarate and L-arginine HCl. Three helpers: hydroxypropyl methylcellulose, microcrystalline cellulose and magnesium stearate. The blend weighs 500 mg per capsule, with no single amounts printed.
Does Melonex list any herbs or vitamins?
No. The label lists no herb, vitamin, mineral or fruit extract. Only the two amino acids in three forms sit in the blend, and the other ingredients are a cellulose capsule, a filler and a flow aid.
Which Melonex ingredient is there most of?
L-citrulline DL-malate, because blends list ingredients by descending weight (21 CFR 101.36 (proprietary blends)). It can weigh at most 500 mg, but the actual amount is not printed. The second and third lines are capped at 250 and 167 mg.
Is the Melonex formula the same as other citrulline supplements?
Not necessarily. Without single amounts, the Melonex formula cannot be matched to any other product's dose. Compare milligrams of each amino acid when a label prints them; this one prints only the 500 mg total.
Does Melonex have artificial ingredients?
The label lists no dye, sweetener or flavor. It does list magnesium stearate and microcrystalline cellulose as helpers. The label uses the words "Natural Formula*", which carries a star tied to the FDA statement.
Where do the Melonex ingredients come from?
The label says "Made in the USA with globally sourced ingredients". The countries are not named, and the manufacturer is not named either. The label does name a distributor, Instituto Experience of Lakeland, Florida.
09Who 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.
+Keep reading
More about Melonex
U.S. authorized Melonex merchant
Ready to try Melonex?
Show the bottle to your doctor or pharmacist first, then pick a pack. Six bottles cost the least per bottle, and the seller lists a 60-day money-back guarantee on every pack.
- Secure checkout
- 60-day money-back
- Ships from the U.S.
