Ingredients
Protoflow Ingredients: What Is in Each Serving
Protoflow lists 14 ingredients in each two-capsule serving: two vitamins and twelve plant and other lines.
Vitamin E is 13 mg and niacin is 75 mg. The other twelve add up to 1,531 mg, led by hawthorn and epimedium at 250 mg each.
For the full panel, see the Protoflow supplement facts.
Written by the Protoflow label teamUpdated
The panel01
What ingredients are in Protoflow?
Protoflow lists 14 lines per serving, two capsules: two vitamins and twelve plant and other lines, with a total of 1,531 mg for the twelve.
The vitamins come first on the panel: vitamin E at 13 mg (87% of the Daily Value) and niacin at 75 mg (469%). Then come the twelve lines with no Daily Value, in order of weight: hawthorn 250 mg, epimedium 250 mg, damiana 200 mg, muira puama 200 mg, ginkgo 120 mg, Chinese ginseng 120 mg, tribulus 120 mg, catuaba 84.5 mg, saw palmetto 84.5 mg, inosine 50 mg, oat straw 32 mg and cayenne 20 mg.
Each card opens a page with the label amount, the research and the main caution. The sales page names only eight herbs and prints no amounts, so the label is the source for everything on this site.
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84.5 mg per serving01Saw palmetto
84.5 mg: line 11 of 14
Serenoa repens fruit
Evidence: Probably not helpful for urinary symptoms from an enlarged prostate (NCCIH)Brand photo of the plant; the label uses the fruit.
Per serving84.5 mg per serving (Daily Value not established)
Studied atTrials used 320 mg a day and up to three times that
Watch forMild digestive upset, dizziness, headache; may be unsafe in pregnancy.
Full profile -
120 mg per serving02
Ginkgo
120 mg: line 7 of 14
Ginkgo biloba leaf
Evidence: No conclusive evidence for any health conditionA drawing made for this site; no photo was supplied.
Per serving120 mg per serving (Daily Value not established)
Studied atNo dose is tied to a prostate effect
Watch forMay raise bleeding risk with anticoagulants such as warfarin.
Full profile -
250 mg per serving03Hawthorn
250 mg: line 3 of 14, tied for the largest
Crataegus species, fruit (berries)
Evidence: Conflicting in heart failure; little or no quality evidence otherwiseBrand photo of berries; the label uses the fruit.
Per serving250 mg per serving (Daily Value not established)
Studied atStudied mostly in heart failure; no prostate data
Watch forDizziness, nausea; ask a clinician if you take heart or blood pressure medicine.
Full profile -
250 mg per serving04Epimedium
250 mg: line 4 of 14, tied for the largest
Horny goat weed (Epimedium sagittatum), whole plant
Evidence: Limited; mostly lab and multi-herb studiesBrand photo of the plant; the label uses the whole plant.
Per serving250 mg per serving (Daily Value not established)
Studied atNo clinical dose established for sexual function
Watch forAvoid with cardiovascular disease or hormone-sensitive cancers (MSK).
Full profile -
200 mg per serving05Damiana
200 mg: line 5 of 14
Turnera diffusa leaf
Evidence: Limited; animal studies and one multi-ingredient product studyBrand photo of the plant; the label uses the leaf.
Per serving200 mg per serving (Daily Value not established)
Studied atNo human dose established
Watch forMay affect blood sugar in animals; no human safety section.
Full profile -
200 mg per serving06Muira puama
200 mg: line 6 of 14
Ptychopetalum olacoides root
Evidence: Lacking for any use on its ownBrand photo of the flowering branch; the label uses the root.
Per serving200 mg per serving (Daily Value not established)
Studied atA review cited 0.5-1.5 g a day of a root concentrate
Watch forNervousness, digestive upset, headache are possible; avoid in pregnancy.
Full profile -
120 mg per serving07Chinese ginseng
120 mg: line 8 of 14
Panax ginseng root (Asian ginseng)
Evidence: Some evidence for erectile function; blood sugar evidence inconclusiveBrand photo of roots; the label uses the root.
Per serving120 mg per serving (Daily Value not established)
Studied atNCCIH names no dose; small studies on erectile function
Watch forInsomnia is the most common effect; may interfere with blood clotting.
Full profile -
120 mg per serving08
Tribulus
120 mg: line 9 of 14
Tribulus terrestris fruit
Evidence: Mixed for testosterone and erectile functionA drawing made for this site; no photo was supplied.
Per serving120 mg per serving (Daily Value not established)
Studied atNo consistent dose
Watch forMay add to diabetes and blood pressure drugs (MSK); rare severe liver and kidney reports.
Full profile -
84.5 mg per serving09Catuaba
84.5 mg: line 10 of 14
Trichilia catigua bark
Evidence: Mostly preclinicalBrand photo of the flowering plant; the label uses the bark.
Per serving84.5 mg per serving (Daily Value not established)
Studied atNo human dose established
Watch forLittle human safety data.
Full profile -
75 mg per serving10
Niacin (vitamin B3)
75 mg, 469% of the Daily Value
Nicotinic acid or nicotinamide (the label does not say which)
Evidence: Supplement amount is above the adult upper limitA drawing made for this site, not a photo of the capsules.
Per serving75 mg per serving (469% DV)
Studied atUpper limit for supplemental niacin: 35 mg a day
Watch forFlushing is common at 30-50 mg or more of nicotinic acid; high doses can strain the liver and raise blood glucose.
Full profile -
13 mg per serving11
Vitamin E
13 mg, 87% of the Daily Value
Fat-soluble vitamin, succinate ester of d-alpha-tocopherol
Evidence: Not a prostate treatment; a high-dose trial found harmA drawing made for this site, not a photo of the capsules.
Per serving13 mg per serving (87% DV)
Studied atSELECT trial: 400 IU (180 mg) of a different form, which raised prostate cancer risk
Watch forLarge doses can add to bleeding risk with blood thinners.
Full profile -
50 / 32 / 20 mg12Inosine, oat straw and cayenne
50, 32 and 20 mg: the three smallest lines
Inosine, Oat straw, Cayenne
Evidence: Not established for any of the threeBrand photo of cayenne; no photos of inosine or oat straw were supplied.
Per serving50, 32 and 20 mg; no Daily Value
Studied atNo dose tied to a prostate effect
Watch forA purine, so ask a clinician if you have gout or kidney stones.
Full profile
Grouped02
How are the Protoflow ingredients grouped?
They fall into four groups: two vitamins, tonic herbs, circulation herbs and the herb most often sold for the prostate, plus three small lines.
Grouping helps because the herbs in a group share the same story and the same gaps. The tonic herbs, damiana, muira puama, tribulus, catuaba and epimedium, are traditionally sold for vitality and sexual function. The circulation herbs, hawthorn and ginkgo, are sold for the heart and memory. Chinese ginseng is a general tonic with some support for erectile function. Saw palmetto stands alone as the one herb with prostate trials, and those trials were negative.
Amounts03
Which Protoflow ingredient is the largest, and which is the smallest?
Hawthorn and epimedium are the largest at 250 mg each, and cayenne is the smallest at 20 mg.
Together the top four, hawthorn, epimedium, damiana and muira puama, make 900 mg, which is 59% of the 1,531 mg. Saw palmetto, the best-known prostate herb, is 84.5 mg, or 5.5%. The table shows where each line falls.
| Line | Amount | Share of 1,531 mg | Named on sales page |
|---|---|---|---|
| Hawthorn | 250 mg | 16.3% | Yes |
| Epimedium | 250 mg | 16.3% | Yes |
| Damiana | 200 mg | 13.1% | Yes |
| Muira puama | 200 mg | 13.1% | Yes |
| Ginkgo | 120 mg | 7.8% | No |
| Chinese ginseng | 120 mg | 7.8% | Yes |
| Tribulus | 120 mg | 7.8% | No |
| Catuaba | 84.5 mg | 5.5% | Yes |
| Saw palmetto | 84.5 mg | 5.5% | Yes |
| Inosine | 50 mg | 3.3% | No |
| Oat straw | 32 mg | 2.1% | No |
| Cayenne | 20 mg | 1.3% | Yes |
The shares are rounded. The vitamins are not in the total, since they weigh 88 mg between them and are counted by Daily Value.
Doses04
How do the label amounts compare with doses used in studies?
For the herbs with a trial dose, the label holds less: saw palmetto is about a quarter of 320 mg and muira puama is below the reviewed range.
The bars set each label amount against a reference. Treat them as a guide only, since studies use single ingredients, often as standardized extracts, and the label gives no extract details.
Protoflow: from $49 a bottle60 capsules · 2 a day · free US shipping on 3 or 6 · 60-day money-back guarantee
See packsOther ingredients05
What are the other ingredients in Protoflow capsules?
The label lists rice flour, gelatin, magnesium stearate, silicon dioxide, maltodextrin, soy protein concentrate and water.
Gelatin is an animal product, so the capsules are not vegan. Soy protein concentrate is a major allergen, and men with a soy allergy should not take the product without asking a doctor. Maltodextrin is a processed carbohydrate. Magnesium stearate and silicon dioxide are flow agents, the kind of "non-essential" fillers the sales page says are absent.
That clashes with the sales-page lines "100% free of chemical coating and other non-essential fillers" and "Non-GMO, vegan and gluten-free". The label is the authority on what is in the bottle. If any of those claims matters to you, ask the order desk before ordering. Our legit check lists every conflict we found.
Cautions06
Which Protoflow ingredients need a doctor's advice first?
Niacin, ginkgo and vitamin E carry the clearest cautions, and the label itself asks you to consult a physician if you take any medication.
Niacin at 75 mg is above the 35 mg adult upper limit and causes flushing (NIH ODS, Niacin). Ginkgo (NCCIH, Ginkgo) and vitamin E (NIH ODS, Vitamin E) can each add to bleeding risk when combined with blood thinners. Chinese ginseng may interfere with clotting (NCCIH, Asian Ginseng). Tribulus has rare liver and kidney reports (MSK, Tribulus terrestris). Epimedium is advised against in cardiovascular disease (MSK, Epimedium).
None of that means Protoflow will harm you. It means a pharmacist should read the panel next to your medicine list. Keep taking prescribed medicine and do not stop it for a supplement. For urinary symptoms, see a doctor, since an enlarged prostate, an infection and diabetes can all be behind them (NIDDK, Enlarged Prostate (BPH)).
FAQ07
Protoflow ingredients: questions answered
How many ingredients are in Protoflow?
The label lists 14 active lines per serving: vitamin E, niacin and twelve plant and other lines. Seven other ingredients are listed separately, such as gelatin and rice flour.
What is the main ingredient in Protoflow?
By weight, hawthorn and epimedium are tied at 250 mg per serving. Saw palmetto, which people often expect to be the main one, is only 84.5 mg.
Does Protoflow contain saw palmetto?
Yes, 84.5 mg per serving. Two NIH-funded trials found saw palmetto alone did not improve enlarged prostate symptoms.
Are the Protoflow ingredients natural?
Most lines are plants, but vitamin E is a succinate form and inosine is a purine compound. The word natural has no fixed legal meaning on a supplement label.
Does Protoflow contain caffeine or stimulants?
The label lists no caffeine. Damiana and cayenne are traditionally described as stimulating, and Chinese ginseng can cause insomnia, so sensitive people should watch their sleep.
Where can I see the full Protoflow label?
The supplement facts page shows the whole panel with each line explained, and the label image is on the home page and the facts page.
Are there fillers in Protoflow?
The label lists magnesium stearate, silicon dioxide, maltodextrin and rice flour among other ingredients. The sales page claims no non-essential fillers, which the label does not match.
Who wrote this08
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a USA authorized retailer of Protoflow, not by the manufacturer or the label distributor. Buying through our order links earns us money.
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