Melonex®: one daily capsule for healthy blood flow and circulation
A three-amino-acid formula built around L-citrulline and L-arginine, the building blocks your body uses to make nitric oxide.
Quick answer: Melonex is a capsule supplement, 60 per bottle, marketed for healthy blood flow, circulation and heart support. It lists L-citrulline DL-malate, L-arginine AKG and L-arginine HCl, with no published doses. Take one capsule each morning with water. It is not a blood pressure medicine. It costs $49 to $79 a bottle with a 60-day guarantee.
What is Melonex?
Melonex comes in a white bottle of 60 capsules with a crimson and gold label: "Melonex Advanced Support, Dietary Supplement". The three label icons read Heart Support, Circulation Support and Natural Formula.
The official website lists three amino acid ingredients: L-citrulline DL-malate, L-arginine alpha-ketoglutarate and L-arginine HCl. All three feed the body's nitric oxide pathway. The amounts are not published.
It is aimed at adults who want to support healthy blood flow and normal blood pressure alongside diet, activity and medical care. It is not a medicine.
Read the full Melonex explainerWhat is inside Melonex?
Three amino acids, none with a published amount.
What we know
Honesty note: the official website names three amino acid ingredients and says they are in an "optimal dosage", but it shows no amounts. A capsule usually holds about a gram of powder or less, while most studies used several grams a day. We do not invent doses; go by the Supplement Facts on your bottle.
L-Citrulline DL-malate
An amino acid the kidneys turn into L-arginine, and it raises blood arginine more reliably than arginine itself. Reviews of trials at about 3 to 6 g a day found small drops in blood pressure; citrulline malate at 6 to 8 g is mostly studied for exercise.
Citrulline and blood pressure on PubMedL-Arginine alpha-ketoglutarate (AKG)
L-arginine bound to alpha-ketoglutarate, a form common in "nitric oxide" products. The body uses arginine to make nitric oxide, which relaxes blood vessels. Most blood pressure studies used gram amounts and plain L-arginine.
L-arginine and blood pressure on PubMedL-Arginine HCl
The hydrochloride salt of the same amino acid. A meta-analysis of trials using 4 to 24 g a day found an average fall of about 5 mmHg in systolic pressure. L-arginine should not be used after a recent heart attack.
MedlinePlus on L-arginineHow does Melonex work?
The brand shows four steps. Here is what the three listed amino acids can realistically do.
Absorb
The capsule releases citrulline and arginine, which are absorbed from the gut.
Convert
The kidneys turn citrulline into more arginine over the following hours.
Nitric oxide
Vessel linings use arginine to make nitric oxide, which helps them relax.
Flow
Relaxed vessels can mean easier blood flow. Effects in studies are modest.
Good to know: if you take blood pressure medicine, nitrates or ED pills, ask your doctor first. More on the how to use page, or read how Melonex works in detail.
Melonex price today: from $49 a bottle
Three one-time bundles. Free US shipping on 3 and 6 bottles; the 2-bottle pack adds shipping.
2 bottles
+ shipping (cost shown at checkout)
- You save $200
- 60-day money-back guarantee
6 bottles
Free US shipping
- You save $780
- Lowest price per bottle
- All 6 bonus guides
- 60-day money-back guarantee
3 bottles
Free US shipping
- You save $330
- All 6 bonus guides
- 60-day money-back guarantee
Prices checked in October 2026. Supply figures are the brand's; at one capsule a day a 60-capsule bottle would last longer. Confirm the total and shipping on the order page.
Six bonus guides with 3 or 6 bottles
Digital e-books listed on the official website. Useful reading, not treatment.
Pressure Rebalance Challenge
Fortifying Vitamins
Accelerated Metabolism
Nerve Renew Guide
Diabetes Freedom
Personalized Usage Guide
The official website lists these six digital guides with the 3-bottle and 6-bottle packs (October 2026). They are reading material, not treatment: "Diabetes Freedom" cannot cure diabetes, and the Pressure Rebalance Challenge does not replace blood pressure medicine or your doctor's advice.
What Melonex is designed to support
The brand's goals, paired with what the listed ingredients can realistically do. None of this is a medical claim.
Healthy blood flow
Arginine is the raw material for nitric oxide, which helps blood vessels relax.
Normal blood pressure
Trials of arginine and citrulline at gram doses found small drops in pressure.
Circulation
Citrulline raises blood arginine levels more steadily than arginine alone.
Heart support
A goal on the label; there is no Melonex study on heart outcomes.
Simple routine
One capsule in the morning with water.
Low-risk trial
One-time bundles, no auto-ship, 60-day guarantee.
Melonex plus the habits that matter most
Nitric oxide support works best on top of the basics that doctors know lower blood pressure: less salt, more potassium-rich food, regular walking, limited alcohol and enough sleep.
- Morning: one capsule with a full glass of water.
- Plate: vegetables, fruit, beans and whole grains; go easy on salt.
- Move: about 30 minutes of brisk walking most days.
- Measure: check your blood pressure at home and share the log with your doctor.
Photo is illustrative. Read daily habits for healthy circulation.
The 60-day Results or Refund guarantee
The official website promises a refund within 60 days of purchase. The guarantee section asks you to contact support after at least 30 days of use, while the FAQ only says within 60 days. To be safe, use it for 30 days and contact support before day 60.
Full steps are on our refund policy page.
Order with the 60-day guaranteeHow Melonex is made, in the brand's words
The brand describes Melonex as a natural formula made in the USA in a GMP facility. We pass on these statements without having inspected the facility.
There is no "FDA approved" badge on this page, because the FDA does not approve dietary supplements.
GMP facility
Made in the USA
Natural formula
Melonex reviews: our position
We found no independently verified Melonex reviews. The named "Verified Purchase" stories and the unnamed "expert" quote on the sales page cannot be checked, so they are left out here.
Photos are illustrative and do not show verified reviewers.
Simple dose
One capsule a day.
Studied nutrients
Arginine and citrulline have real blood pressure research.
Unknown amounts
No doses published.
Mixed refund wording
30 days of use vs. within 60 days.
Melonex questions and answers
References
Independent sources on the listed ingredients and blood pressure. None tested Melonex itself.
Latest Melonex guides
Try Melonex for 60 days
From $49 a bottle on the 6-bottle pack, with free US shipping, six bonus guides and a 60-day money-back guarantee.
Check today's Melonex price