Directions
How to take Melonex: one capsule, one glass of water
Take Melonex as one capsule a day with an 8 oz glass of water, as the label directs. You may take up to two capsules a day, and no more. The label names no time of day and no food rule, so pick a fixed moment you will remember. A 60-capsule bottle lasts 60 days at one a day.
Written by the Melonex label deskUpdated
The directions01
How do you take Melonex capsules?
You take Melonex by swallowing one capsule a day with an 8 oz glass of water. That single line is the whole routine the label asks for.
The label adds one option: you may take up to two capsules daily. It also adds one limit, in its caution box: do not exceed the recommended dose. So the range is one or two capsules a day.
There is no time of day, no meal rule and no loading phase. The sales page gives no directions at all (Melonex sales page).
The label, line by line
- "take one (1) capsule daily": the base dose
- "with an 8 oz. glass of water": about one standard cup
- "May take up to two (2) capsules daily": the ceiling

One or two02
Should you take one or two Melonex capsules a day?
One capsule a day is the label's starting dose for Melonex, and two is the most it allows. Neither choice is backed by a trial of the product, because none has been run.
Two capsules give you 1 g of the blend. That is still far below the 3 to 9 g of citrulline or 4 to 24 g of arginine used in blood pressure trials (Barkhidarian 2019, citrulline meta-analysis) (Dong 2011, arginine meta-analysis). More capsules than two would also break the label's limit.
The label hides each ingredient's share, so the blend order gives ranges, not exact amounts.
| 1 capsule a day | 2 capsules a day | |
|---|---|---|
| Blend per day | 500 mg | 1,000 mg |
| Citrulline malate (line 1) | About 167 to 500 mg | About 333 to 1,000 mg |
| Arginine AKG (line 2) | At most 250 mg | At most 500 mg |
| Arginine HCl (line 3) | At most 167 mg | At most 333 mg |
| Even split, each line | About 167 mg | About 333 mg |
| Days per bottle | 60 | 30 |
Each weight includes the salt partner (malate, alpha-ketoglutarate or HCl), so the pure citrulline or arginine is less. The full math is on the Melonex dose check.
Timing03
What is the best time of day to take Melonex?
The best time to take Melonex is the time you will not forget, because the label sets no hour. Morning, lunch and evening all fit the directions.
A fixed slot means fewer missed capsules and a cleaner home blood pressure log.
Any prescribed medicine stays on the schedule your doctor set. The dial shows one sample day.
- Morning, about 7:30
Sit quietly, take a home blood pressure reading, then one capsule with a full glass of water. Prescribed medicine stays on its own schedule.
- A brisk walk
Adults are advised to get at least 150 minutes of moderate activity a week.
- Plates and salt
The DASH eating plan and less sodium both lower blood pressure in studies.
- Night, 7 to 9 hours
Same bedtime, same wake time. Take the evening reading, if your doctor asks for one, before bed.
Habits from AHA (AHA, physical activity), NHLBI (NHLBI, DASH eating plan) and AHA sodium advice (AHA, sodium per day); home readings per AHA (AHA, home BP monitoring). The time for the capsule is a suggestion; the label sets none.
Food and water04
Should Melonex be taken with food or on an empty stomach?
Melonex can be taken with or without food, since the label gives no meal rule. The one fixed part is the 8 oz glass of water.
If your stomach is sensitive, a meal may feel easier. Mayo Clinic lists nausea, abdominal pain, diarrhea and bloating among arginine side effects (Mayo Clinic, L-arginine). In short studies, citrulline caused no stomach upset even at 15 g (Aguayo 2021, L-citrulline review).
Same time, same glass of water, with or without breakfast. If an empty stomach feels queasy, try it with a meal.
Step by step05
How do you start taking Melonex for the first time?
You start Melonex by checking the seal, clearing any health questions, and then taking one capsule with water at a set time. Six short steps cover the first day.
The second step matters most. Some people need a doctor's view before any arginine product, and the reasons are listed on who Melonex is for.
Check the safety seal
Before you open a new bottle, look at the seal. The label says not to use the bottle if the seal is damaged or missing.
Ask first if a caution applies
Pregnant or nursing, under 18, a medical condition, or on blood pressure, nitrate or erectile-dysfunction drugs? Talk to your doctor first.
Pick one time of day
The label sets no time. Tie it to something you already do daily.
Swallow one capsule with 8 oz of water
One capsule with a full 8 oz glass of water is the base dose printed on the label.
Stay at one or two a day
The label allows a second capsule a day. Do not go past two in one day, even after a missed dose.
Close the bottle and store it cool and dry
Put the cap back on and keep the bottle away from heat, light and humidity, out of reach of children.

Melonex: from $49 a bottle60 capsules · 2, 3 or 6 bottles · free US shipping on 3 or 6 · 60-day guarantee
See packsBottle math06
How long does a bottle of Melonex last?
A bottle of Melonex lasts 60 days at one capsule a day and 30 days at two. Each bottle holds 60 capsules, one per serving.
The sales page counts two bottles as a 60-day supply, which assumes two capsules a day (Melonex sales page).
Missed capsules07
What should you do if you miss a dose of Melonex?
If you miss a dose of Melonex, take the next capsule at your usual time and carry on. The label has no missed-dose rule, so the daily limit of two is the guide.
On one a day, you can take the missed capsule later that day and stay inside the label. On two a day, there is no room to catch up, so skip it.
Storage08
How should you store Melonex capsules?
Store Melonex in a cool, dry place, away from heat, light and humidity, with the cap closed. Those are the label's own words, split across two lines.
A steamy bathroom or a hot car is the wrong spot.
Keep the bottle out of reach of children, and away from pets too. These capsules are for adults only.
The label says not to use it if the safety seal is damaged or missing. Call the order desk at +1 (855) 889-3137 instead. Full label text is on the supplement facts page.
Other medicines09
Can you take Melonex with other medicines?
You can take Melonex alongside other medicines only after a doctor or pharmacist has checked the mix. Some common heart and blood pressure drugs need that talk first.
Arginine combined with blood pressure drugs, nitrates or sildenafil might make blood pressure fall too low (Mayo Clinic, L-arginine). The label itself asks anyone with a known medical condition to consult a physician first.
Never skip, lower or stop a prescribed dose because you started a supplement. Bring the bottle to your next visit so your doctor can read the label. The full list of interactions is on Melonex side effects.
FAQ10
Questions about taking Melonex
Can I take two Melonex capsules at the same time?
The label allows up to two capsules a day but does not say whether to take them together or apart. Both ways stay inside the directions. Splitting them simply pairs each capsule with its own glass of water.
Can I open a Melonex capsule and stir the powder into a drink?
The label only describes taking the capsule with an 8 oz glass of water, so opening it is not part of the directions. The shell is plant cellulose, made to be swallowed. If you have trouble with capsules, ask a pharmacist before changing how you take it.
Should I take Melonex before a workout?
You can, but the label sets no timing for exercise. Sports studies gave at least 3 g of citrulline 30 minutes or more before testing and found only a small effect (Trexler 2019, citrulline exercise). One Melonex capsule holds 0.5 g of the whole blend, so a pre-workout boost is unlikely.
Is it fine to take Melonex at night?
Yes, the label names no time of day, so a bedtime capsule fits the directions. Take it with the full glass of water. If you log blood pressure, keep reading times fixed so weeks stay comparable.
Do I need to take breaks from Melonex?
The label gives no cycling schedule and no limit on how many weeks to use it. No trial has studied long-term use of this product. A sensible plan is to review it with your doctor at regular checkups, especially if you take any heart or blood pressure medicine.
What if I accidentally took three Melonex capsules in one day?
Three capsules is over the label's limit of two, so stop for the day and return to your usual dose tomorrow. Watch for dizziness or light-headedness. Call your doctor or pharmacist if you feel unwell, and call 911 for chest pain or fainting.
Who wrote this11
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, AHA, CDC, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a USA authorized Melonex retailer, not by the manufacturer or the distributor. We earn money when you buy through our order links.
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