ProstaFlow Official Website › Blog › ProstaFlow Dosage and mg: 7 Numbers
ProstaFlow Dosage and mg: 7 Numbers on the Label
Quick answer. The dose is one capsule a day. Each capsule carries seven printed amounts: niacin 7.5 mg NE, calcium 18 mg, L-arginine 200 mg, arginine AKG 200 mg, citrulline HCl 100 mg, citrulline malate 100 mg and beta alanine 40 mg. Do not exceed the recommended dose. Seven numbers explain the label.
- Serving size is one capsule, and each bottle holds 30 servings.
- The five amino acid rows add up to 640 mg per capsule.
- The two arginine rows give about 333 mg of arginine, not 400 mg.
- The two citrulline rows are salt weights, so the citrulline is under 200 mg.
- Beta alanine is 40 mg, one hundredth of the low end of the dose used in its position stand.
- Niacin is 7.5 mg NE, below the 35 mg US and the 10 mg European upper intake levels.
What is the ProstaFlow dosage per day?
One capsule. The label says to take one capsule daily and not to exceed the recommended dose. Every amount on the panel is for that one capsule.
So when this page says 200 mg, it means 200 mg in the one capsule you take that day. There is nothing to multiply and no loading week.
What are the 7 numbers to know?
1 capsule per serving
The serving size. Every figure below is per capsule.
30 servings per container
One bottle is 30 days at one capsule a day.
640 mg of amino acid rows
200 + 200 + 100 + 100 + 40 = 640 mg. This is the sum of the five amino acid rows. Niacin and calcium are extra.
About 333 mg of arginine
The base row gives 200 mg. The 2:1 AKG row gives roughly 133 mg, because two thirds of it is arginine.
Under 200 mg of citrulline
Two salt rows of 100 mg each. The partner molecules take a share, and the malate ratio is not printed.
40 mg of beta alanine
A free amino acid, so 40 mg is 40 mg.
7.5 mg NE of niacin
This is 47% of the Daily Value. It is a vitamin amount, not a trial dose.
Is there a 400 mg figure on the ProstaFlow label?
Not as a single row. People search for "ProstaFlow 400mg" because two rows each show 200 mg of arginine. Added together that looks like 400 mg.
But the second row is a 2:1 extract. Only two parts in three of it is arginine. So the real arginine is about 333 mg. The label shows no 400 mg figure of its own.
Like to read the whole panel yourself?
The label prints an amount for every row, so you can check each one against this page when the bottle arrives.
See today’s price and guaranteeThis website sells ProstaFlow and earns money when you order. How that works. The checkout shows the current price.
How do the mg compare with the research doses?
| Row | On the label | Dose in the research | Gap |
|---|---|---|---|
| L-Arginine (base) | 200 mg | 1,500–5,000 mg a day (erectile function meta-analysis) | Under a quarter of the low end, even with both arginine rows |
| L-Arginine AKG 2:1 | 200 mg | 12,000 mg a day (AAKG study) | One sixtieth |
| L-Citrulline HCl | 100 mg | 1,500 mg a day for a month (Cormio) | Both citrulline rows together stay under 200 mg |
| L-Citrulline Malate | 100 mg | About 8,000 mg (exercise trials) | One eightieth |
| Beta Alanine | 40 mg | 4,000–6,000 mg a day (ISSN position stand) | One hundredth of the low end |
The gaps are plain arithmetic on the printed figures. They compare amounts, not results.
None of those studies had a prostate outcome. They looked at erectile function, blood pressure or exercise. That is why the dose question matters: the trial doses were large and the outcomes were different from what a buyer hopes for.
Are the niacin and calcium amounts a concern?
Niacin is 7.5 mg NE. The tolerable upper intake level is 35 mg a day in the US and 10 mg in Europe, so this row sits under both. The flushing people associate with niacin belongs to much larger doses.
Calcium is 18 mg. That is under a fiftieth of a day's calcium. The heart-risk debate about calcium supplements concerns amounts in the hundreds of milligrams. This row is not part of it.
How should the one daily capsule be taken?
The label is short on this point. It asks for one capsule daily with an 8 oz glass of water. It adds that the capsule is best taken 20-30 minutes before a meal. It says to store the bottle in a cool, dry place away from direct heat and light.
That is the whole routine. No loading week, no cycling and no second dose are printed. If you miss a day, the label gives no catch-up rule, so simply take the next one at the usual time.
The caution line is worth reading in full once. It says: do not exceed recommended dose; pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement; keep out of reach of children; do not use if safety seal is damaged or missing.
One more number belongs on the list. Arginine and citrulline feed the nitric oxide pathway, which is the one nitrate medicines and PDE5 inhibitors work through. If you take either, raise the capsule with your prescriber before you start.
Can you take more than one capsule?
The label says not to exceed the recommended dose, and we have no data on higher amounts. Taking two would also not bring you closer to the trial doses. You would still be far below them.
If you also use another product with arginine or citrulline, add the amounts up. Pre-workout powders can carry grams of both. Two labels read separately can add up to far more than either shows.
How do you check the dose on your own bottle?
- Look for "Serving size: 1 capsule" and "Servings per container: 30".
- Read the seven rows against the table on our ingredients page.
- Confirm that "2:1" is printed on the arginine AKG row.
- Check the caution line: do not exceed the recommended dose.
- Call the order desk on +1 (877) 257-0710 if anything is different.
Frequently asked questions
What is the ProstaFlow dosage?
One capsule a day, taken with an 8 oz glass of water, 20–30 minutes before a meal. The label says not to exceed the recommended dose.
How many mg of arginine are in ProstaFlow?
About 333 mg. The base row has 200 mg, and the 2:1 AKG extract row has 200 mg of which roughly 133 mg is arginine.
How many mg of citrulline are in ProstaFlow?
Less than 200 mg. Two rows of 100 mg each are salt weights. The malate ratio is not printed, so the exact citrulline amount is not published.
Is there a ProstaFlow 400mg capsule?
No. The two arginine rows each show 200 mg, which adds up to 400 mg of row weight. The arginine itself is about 333 mg.
Is the niacin level high?
No. It is 7.5 mg NE, which is below the 35 mg US and 10 mg European upper intake levels.
Are these amounts the same as the doses in studies?
No. The label amounts are between a tenth and a hundredth of the doses in the studies named on this website, and those studies measured other outcomes.
Our view
Seven numbers are enough to understand this bottle. The good news is that every one is printed, so nothing is hidden behind a blend name. The less comfortable news is that the amino acid amounts are small beside the research.
We do not read that as proof that the capsule fails. We read it as a reason to stay modest, to test it fairly and to keep the guarantee dates in view. Anyone telling you the milligrams match the studies is wrong.
ProstaFlow is a dietary supplement. It is not FDA approved and is not intended to diagnose, treat, cure or prevent any disease. Do not exceed the recommended dose.
Know the numbers before you decide
You have seen every printed amount. If they suit you, the guarantee gives 60 days from the shipping date to find out in your own routine.
See today’s price and guaranteeThis website sells ProstaFlow and earns money when you order. How that works. The checkout shows the current price.
Sources named on this website
- The arginine meta-analysis: https://pubmed.ncbi.nlm.nih.gov/30770070/
- The AAKG pharmacokinetic and safety study: https://pubmed.ncbi.nlm.nih.gov/16928472/
- Cormio's citrulline trial: https://pubmed.ncbi.nlm.nih.gov/21195829/
- The citrulline malate strength meta-analysis: https://pubmed.ncbi.nlm.nih.gov/34176406/
- The International Society of Sports Nutrition position stand: https://pubmed.ncbi.nlm.nih.gov/26175657/
- The meta-analysis that set a tolerable upper intake level for niacin: https://pubmed.ncbi.nlm.nih.gov/28541582/
- A meta-analysis of the randomised calcium trials: https://pubmed.ncbi.nlm.nih.gov/37181938/
Last updated . Reviewed October 16, 2026 by Dr. Anurag Chahal, MD.
