Official website · Authorized American Melonex outlet
Melonex is a dietary supplement in capsules, sold in white bottles of 60. The label asks for one capsule a day with an 8 oz. glass of water, and allows up to two. Every capsule carries a 500 mg blend of three amino acid forms: L-citrulline DL-malate, L-arginine alpha-ketoglutarate and L-arginine HCl. It is labeled for heart support and is not a blood-pressure medicine.
Written by the Melonexcare editors · Updated
*Label wording. These statements have not been evaluated by the FDA. Render of the 3-bottle kit supplied by the vendor.
The ledger: one capsule, three lines
From the label orderBlood pressure trials3-9 g a day of L-citrulline; 4-24 g a day of L-arginine. One capsule is under a gram in all.
Labelin full
No. 01What it is
Melonex is a dietary supplement in vegetable capsules, made for adults who want a simple daily habit beside the heart care they already have.
Think of it the way a pharmacist would at the counter: first we read the bottle together, then we talk about what it can and cannot do. The bottle holds 60 capsules. At one a day, that is two months. At the label's top amount of two a day, it is one month.
The front of the label carries three short stamps: “Heart Support*”, “Circulation Support*” and “Natural Formula*”. The little star matters. It points to the FDA statement on the side panel, which says these words have not been evaluated by the FDA and that the product is not meant to diagnose, treat, cure or prevent any disease.
The Supplement Facts panel lists one thing with a weight: a 500 mg proprietary blend. Inside it, in order, are L-citrulline DL-malate, L-arginine alpha-ketoglutarate and L-arginine HCl. The label names a distributor, Instituto Experience of Lakeland, Florida, and says the capsules were made in the USA with globally sourced ingredients.
Melonex comes as capsules only. The label shows no gummy, drop or liquid version. See capsules, not drops.
Only the 500 mg blend total is printed. The three ingredients share it, and the order tells you which one is largest.
The label says so in plain words. If you take blood pressure medicine, keep taking it exactly as prescribed.
No. 02The label
The Melonex label gives directions, storage, a caution, the Supplement Facts panel and the FDA statement, plus three stamps on the front.
Seventeen numbered spots sit on the flat label below. Tap one and the plain-words note lights up. On a phone, the label scrolls sideways so the small print stays readable.
The caution is worth reading twice. It asks pregnant or nursing mothers, anyone under 18 and anyone with a known medical condition to talk to a physician first. For most people who look at a heart product, that last group includes them.
Pick a number to read that spot on the label.
One capsule a day with an 8 oz. glass of water. You may take up to two a day. No time of day is printed.
Keep away from heat, light and humidity. Store in a cool, dry place.
Do not exceed the dose. Pregnant or nursing mothers, anyone under 18 and anyone with a known medical condition: ask a physician first.
Keep out of the reach of children. Do not use if the safety seal is damaged or missing.
'Made in the USA with globally sourced ingredients.' Which countries is not stated.
Instituto Experience, Lakeland FL 33804, with a phone number and email. The maker is not named.
A red dot inside a thin square, between brass lines. A brand mark, not a seal.
Melonex in dark red serif type. This is a human dietary supplement, not a drug.
Brand wording in brass capitals. It describes the product name, not a tested result.
'Heart Support*', 'Circulation Support*' and 'Natural Formula*'. The asterisk points to the FDA statement on the right.
'60 CAPSULES' and 'DIETARY SUPPLEMENT': 60 days at one a day.
One serving is 1 capsule, and a container holds 60 servings.
500 mg in total, shared by the three ingredients. Single amounts are not shown, and no Daily Value is set.
Listed from most to least by weight: L-Citrulline DL-Malate, then L-Arginine (Alpha-Ketoglutarate dihydrate), then L-Arginine HCL.
Hydroxypropyl methylcellulose (the capsule), microcrystalline cellulose and magnesium stearate.
The standard statement: not evaluated by FDA; not intended to diagnose, treat, cure or prevent any disease.
'Manufactured in an FDA registered facility.' Registration is different from approval.
Each stamp is the brand's own wording. We quote it, then say plainly what it does and does not tell you.
Says what the brand aims at. It is not a result and not a promise about your heart.
Points at arginine and citrulline, which research ties to blood vessels at gram doses.
Describes the formula's style. Amino acids can still interact with medicines.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. (printed on the label)
Every word of the label, typed out, is on the supplement facts page.
No. 03Ingredients
Melonex lists three active lines in a 500 mg blend: L-citrulline DL-malate first, then L-arginine alpha-ketoglutarate, then L-arginine HCl.
All three are forms of two amino acids. Citrulline and arginine are made in the body and found in food; the body turns citrulline into arginine and uses arginine to make nitric oxide, a signal that helps blood vessels relax. The malate, alpha-ketoglutarate and HCl parts are the partners that make each one a stable powder.
A proprietary blend only has to show its total weight and its order, from most to least by weight (21 CFR 101.36). That order lets us work out a ceiling. The first line can be at most 500 mg, the second at most 250 mg and the third at most 167 mg per capsule.
From the Supplement Facts panel. Places 1-3 are the 500 mg blend, listed from most to least by weight (21 CFR 101.36). The other three lines make the capsule and help it fill; they carry no listed amount.
Listed 1st of 3: at most 500 mg
L-citrulline (an amino acid) bound to DL-malic acid
Evidence: Small systolic drop in short, small trials; no trial of MelonexA crop of the label's Supplement Facts panel. No ingredient photo was supplied.
Read the profile
Listed 2nd of 3: at most 250 mg
L-arginine (an amino acid) paired with alpha-ketoglutarate
Evidence: Small drops in blood pressure in trials of grams a day; no trial of MelonexA crop of the label's blend text. Amino acids are white powders, so no photo is shown.
Read the profile
Listed 3rd of 3: at most 167 mg
L-arginine as its hydrochloride salt
Evidence: Same arginine research; the salt form adds no evidenceThe label's caution panel, because arginine carries most of the cautions.
Read the profile
The partners in two salt forms
L-citrulline DL-malate, L-arginine alpha-ketoglutarate
Evidence: Depends on the line; see the pageThe label's three icons. The stamps are label wording, not test results.
Read the profile
Three inactive ingredients
Hydroxypropyl methylcellulose, Microcrystalline cellulose, Magnesium stearate
Evidence: Depends on the line; see the pageA crop of the label's other-ingredients line and FDA statement.
Read the profileEach profile has its own page with the studies and cautions. The full line-by-line math is on the ingredients page.
No. 04Dose vs research
Probably not, if you compare it with the studies. Blood pressure trials used 3-9 g of citrulline or 4-24 g of arginine a day; a whole Melonex capsule weighs 500 mg.
Let us do the arithmetic honestly. Even if every milligram of the blend were citrulline, two capsules would give 1,000 mg, a third of the lowest trial dose. And the weight on the label is the salt form, so the free amino acid inside is less again.
That does not make the capsule harmful or useless. It means the studies below describe the amino acids at much larger amounts, not this product.
| Amino acid | Evidence | What it found |
|---|---|---|
| L-citrulline | 8 small trials (Barkhidarian 2019, citrulline and BP) | 3-9 g a day for 1-17 weeks; systolic pressure about 4.1 mm Hg lower on average; diastolic change not clear |
| L-arginine | 11 trials, 387 people (Dong 2011, arginine and BP) | 4-24 g a day; systolic about 5.4 and diastolic about 2.7 mm Hg lower than placebo |
| L-arginine after a heart attack | VINTAGE MI (VINTAGE MI trial (ACC summary)) | 9 g a day did not help; 6 deaths on arginine and none on placebo; stopped early |
| Arginine safety | NIH fact sheet (NIH ODS, arginine and citrulline) | Up to 9 g a day for weeks well tolerated; stomach upset at 9-30 g |
Read the full ceiling math on the ingredients page.
No. 05Claims vs evidence
Nobody can say yet, because no study has tested Melonex. Its amino acids have small effects on blood pressure in trials, at doses many times larger than a capsule.
When someone at the counter asks “does it work?”, the kind answer is a careful one. The label's own words are set below next to what the research shows. None of the evidence comes from Melonex itself.
The FTC expects health claims to rest on solid evidence that matches the product's dose and form, and says studies of single ingredients may not be enough (FTC, Health products guidance).
Wording as printed on the Melonex label. The asterisk on each stamp points to the FDA statement. Health claims need competent and reliable scientific evidence that matches the product (FTC, Health products guidance).
Starting a supplement is no reason to stop, skip or cut a blood pressure or heart medicine. Arginine and citrulline can add to some of those medicines, so tell your doctor or pharmacist before you begin (Mayo Clinic, L-arginine). More on the label claims vs evidence page.
No. 06How you take it
Swallow one capsule a day with an 8 oz. glass of water. The label allows up to two a day and sets no time, so pick a moment you never miss.
The label reads: “As a dietary supplement, take one (1) capsule daily with an 8 oz. glass of water. May take up to two (2) capsules daily.” Breakfast works for many people because the glass of water is already on the table. Keep any prescribed medicine on its own schedule, as your doctor set it.
Before the first capsule, look at the safety seal. Per the label, a bottle with a damaged or missing seal should not be used.
Swallow one capsule with an 8 oz. glass of water. That is the label's daily serving. The label allows up to two a day, never more.
The label sets no time of day. Tie the capsule to something you already do, like breakfast, and keep prescribed medicine on its own schedule.
One bottle lasts 60 days at one a day. The seller's money-back window is 60 days, so decide by then and share any home cuff log with your doctor.
One capsule is one serving on the Supplement Facts panel. The bottle holds 60. Two a day is the label's ceiling; do not go past it. More detail is on the how to take it page.
No. 07Safety
For many healthy adults the amounts are small, but small is not the same as tested. Some people should talk to a doctor before the first capsule.
The label already asks pregnant or nursing mothers, anyone under 18 and anyone with a known medical condition to check first. The quick check below adds the medicines and heart history that matter most for arginine and citrulline.
Citrulline and arginine may push blood pressure too low with nitrates for chest pain or with erectile-dysfunction drugs such as sildenafil (RxList, L-citrulline) (Mayo Clinic, L-arginine). Arginine is not recommended after a recent heart attack (Mayo Clinic, L-arginine), and one trial was stopped for higher deaths (VINTAGE MI trial (ACC summary)). More on side effects and interactions.
No. 08Know your numbers
Under 120 over under 80 is normal. 130 to 139 on top, or 80 to 89 on the bottom, is stage 1 high blood pressure, and only a clinician can diagnose it.
Type a reading into the finder to see its category. One reading is never a diagnosis. Home cuffs help when they are used the same way every day.
Type a reading to see its category. One reading is not a diagnosis; a clinician confirms with readings on separate days.
Categories from the American Heart Association (AHA, Blood pressure readings) and NHLBI (NHLBI, High blood pressure). About 48% of U.S. adults have high blood pressure, and about 1 in 6 of them do not know it (CDC, High blood pressure facts). A reading over 180/120 with chest pain, shortness of breath, numbness, weakness, vision change or trouble speaking: call 911.
The habits with the best evidence are not in a bottle: less sodium, more movement, enough sleep and a steady home log you can share with your doctor.
One capsule with an 8 oz. glass of water. The label sets no time, so pick a meal you never skip. Prescribed medicine keeps its own schedule.
Rest 5 minutes, then take two readings one minute apart and write them down, as the American Heart Association suggests.
Adults need 150 minutes of moderate activity a week; a brisk 30 minutes on five days gets there.
Most adults need at least 7 hours. Blood pressure normally dips during sleep.
Home readings from the AHA (AHA, Home monitoring); activity from the CDC (CDC, Adult activity); sleep from the CDC (CDC, Sleep and heart health). The capsule time is a suggestion; follow your label.
DASH eating lowers sodium to 2,300 mg a day, and 1,500 mg helps more (NHLBI, DASH eating plan). See blood pressure numbers and supplements and blood pressure medicines.
No. 09A name check
This Melonex is a human dietary supplement in capsules with three amino acids on its label. It is not a painkiller, a fever medicine or an animal product.
A similar name turns up in searches for prescription and veterinary drugs sold elsewhere. Those are different products. Our label lists L-citrulline DL-malate and two forms of L-arginine, and nothing else active.
The side-by-side label check is on the name check page.
No. 10Verdict
It can be worth it as a small daily habit you like, never as a stand-in for blood pressure care. The routine is easy; the amounts are modest.
Our honest view, the way we would say it across the counter: a tidy label and a simple habit, with amounts too small to expect much. Talk to your doctor first, and keep your medicine. More on is Melonex legit?
No. 11Prices
The seller's order page lists 2 bottles at $158 ($79 each, plus $9.99 shipping), 3 at $207 ($69 each, free shipping) and 6 at $294 ($49 each, free shipping). That is about $1.32, $1.15 or $0.82 a day.
Each bottle is 60 days at one capsule a day. The checkout shows the final total, so read it before you pay. These are the prices on the seller's order page as we read it on October 19, 2026 (Seller order page); confirm them at checkout.
Starter kit
$158total
$79 a bottle
Plus $9.99 shipping on this kit
Six-month supply
$207total
$69 a bottle
Free shipping
Lowest per bottle
$294total
$49 a bottle
Free shipping
Prices as listed on the seller's order page, October 19, 2026. The checkout shows the final total. Shipping is $9.99 on the 2-bottle kit and free on 3 and 6 bottles on the order page we read (Seller order page). Per-day figures use 60 days a bottle at 1 capsule. Struck “was” prices and “save” lines are never shown here.
You need 3 bottles. Lowest total: 1 x 3-bottle for $207, plus any shipping shown at checkout.
Uses the prices on the seller's order page: $158 for 2 bottles (plus $9.99 shipping), $207 for 3 and $294 for 6. Bottle icons fill one per bottle. This is only a planning aid; the final total is at checkout.
No coupon or promo code appears on the order page; the bigger kits are the only built-in discount. See pricing and where to buy.
No. 12Guarantee
The seller's 60-day money-back guarantee asks for at least 30 days of continuous use, takes sealed bottles only and keeps a 20% restocking fee. You claim it by email or phone with your order ID.
Your order ID is what the order desk needs. The seller counts 60 days from purchase for the guarantee.
The seller asks for at least 30 days of continuous use before a claim. Stay on your prescribed medicine throughout.
Email [email protected] or call +1 (855) 889-3137 with your order ID before day 60 to get an authorization code. Confirm the live policy when you order.
Send the bottles, with your full name, email and order ID, to the returns address. Return postage is on you.
Once the return is verified, the refund reaches your card in 5-10 business days, less the 20% restocking fee. Return shipping is on you, and only sealed bottles qualify. Confirm the live policy when you order. Read the guarantee and the refund policy.
No. 13Reviews
We print a review only after the order desk matches it to a real order and the buyer agrees. None is verified yet, so the cards below are empty on purpose.
The photos were supplied by the vendor. The names, stories, scores and counts in the seller's sample copy are not verified customers, so we leave them out. The FTC bans fake reviews and testimonials (FTC, Fake reviews rule).
4.7out of 5
Based on 756 verified ratings
Filled in only from reviews matched to a real order. How we check reviews.
I volunteer at church on Sundays. Mall laps in the morning. Serving before we start. I keep it on the piano. Alarm is a sticky note, not the phone.
Pack review 1, as supplied · Photo supplied by the vendor
I pack lunches for a crew. I take blood-pressure tablets. Showed this bottle. They said keep the tablets. I keep it beside the stamp dish. I take it when the dryer buzzes.
Pack review 2, as supplied · Photo supplied by the vendor
I walk mall laps in the morning. Trash-day cue. Capsule already happened. I keep it on the workbench. I take it when the ferry horn goes.
Pack review 3, as supplied · Photo supplied by the vendor
See how we check reviews.
No. 14Badges and renders
Five seller badges and three bottle renders. Each comes with a plain note on what it does and does not show.
A badge is the seller's claim, not a certificate. The renders are computer images of the bottles; the label on them matches the flat label word for word.
Matches the label line about an FDA registered facility. Registration is not approval, and FDA does not endorse products.
A badge supplied by the seller. It names no auditor and no certificate is on file.
A badge supplied by the seller. The label itself makes no GMO statement, and no test is published.
In line with the label, which says made in the USA with globally sourced ingredients. The countries are not named.
The seller lists a 60-day money-back guarantee with a 20% restocking fee. Confirm the live policy.
Each badge comes from the seller’s image set. Badges are the seller's claims, not certificates, and none of them names a certifier, lab or audit. FDA does not approve supplements before they are sold (FDA, Is it really FDA approved?), and health claims in ads need real evidence (FTC, Health products guidance).
Computer renders supplied by the vendor. The label on them reads Melonex, ADVANCED SUPPORT, 60 CAPSULES, the same as the flat label.
Melonexcare calls itself an authorized American Melonex outlet. That is its own description, which we cannot verify. It is not the maker and earns money from our order links. Lot M-26/ME-2181 is a seller reference, not lab proof. Read about us and testing and quality.
No. 15FAQ
No question matches. Try another word.
Melonex is a dietary supplement in vegetable capsules, 60 to a bottle. Each capsule lists a 500 mg proprietary blend of L-citrulline DL-malate, L-arginine alpha-ketoglutarate and L-arginine HCl. The label asks for one capsule a day with water.
Melonex is a capsule. The label shows 60 capsules in a white bottle, with a shell made of hydroxypropyl methylcellulose, a plant cellulose. No gummy, drop or liquid version appears on the label, so listings for those forms are not this product.
Ask your doctor or pharmacist first. Arginine and citrulline may add to blood pressure drugs and push pressure too low, and they should not be mixed with nitrates or sildenafil-type drugs (Mayo Clinic, L-arginine) (RxList, L-citrulline). Keep taking your medicine as prescribed.
One capsule a day with an 8 oz. glass of water, says the label. It also says you may take up to two a day. Do not take more than two, and ask your doctor before moving from one to two.
No. The FDA does not approve dietary supplements for safety and effectiveness (FDA, Is it really FDA approved?). The label says the capsules were made in an FDA registered facility, which is a registration of the building, not approval of the product.
No. Melonex is labeled for adults, and nothing on the bottle is meant for animals. If a pet swallows a capsule, call your veterinarian. Ask a veterinarian about any medicine for an animal.
Sixty days at one capsule a day, or thirty days at the label's maximum of two. The 3-bottle kit covers about six months at one a day, and the 6-bottle kit about a year.
The Melonexcare editors write them. The medical reviewer is not named yet; the box at the bottom of each page shows where those details will appear once a review is on file.
There is more on the FAQ page, in our guides and on the blog.
Authorized American Melonex outlet
Bring the label to your doctor or pharmacist first, then choose a pack. Six bottles cost the least per bottle, and the seller lists a 60-day money-back guarantee on every kit.
