Ingredient list
Protoflow Ingredients: The 14 Actives and Their Amounts
Protoflow has 14 active ingredients, all printed on the Supplement Facts panel.
Together they come to 1,619 mg per two capsules, with hawthorn and epimedium the largest at 250 mg each. No proprietary blend hides any amount.
Read the panel itself on the supplement facts page.
Written by the Protoflow label deskUpdated
The list
What are the ingredients in Protoflow?
Fourteen actives: two vitamins, eleven herbs and inosine. Each has its own printed amount.
The Protoflow ingredients list has 14 active lines. They are vitamin E, niacin, hawthorn, epimedium, damiana, muira puama, ginkgo, Chinese ginseng, tribulus, catuaba, saw palmetto, inosine, oat straw and cayenne.
One serving, two capsules, holds 1,619 mg of actives. Every amount is printed, so no proprietary blend hides the split. Per capsule, halve each number.
Filter the bars by group below. A longer bar means more milligrams, not more benefit.
- 01Vitamin E (as D-Alpha Tocopheryl Succinate)13 mg per 2 capsules · 87% DV
- 02Niacin (Vitamin B3)75 mg per 2 capsules · 469% DV
- 03Hawthorn (Fruit)250 mg per 2 capsules
- 04Epimedium Sagittatum (Whole Plant)250 mg per 2 capsules
- 05Damiana (Leaf)200 mg per 2 capsules
- 06Muira Puama (Root)200 mg per 2 capsules
- 07Ginkgo Biloba (Leaf)120 mg per 2 capsules
- 08Chinese Ginseng (Root)120 mg per 2 capsules
- 09Tribulus (Fruit)120 mg per 2 capsules
- 10Catuaba (Bark)84.5 mg per 2 capsules
- 11Saw Palmetto (Fruit)84.5 mg per 2 capsules
- 12Inosine50 mg per 2 capsules
- 13Oat Straw (Stalks)32 mg per 2 capsules
- 14Cayenne (Fruit)20 mg per 2 capsules
From the Supplement Facts panel, in label order. Bar length is the printed amount against the largest line (250 mg). Other ingredients (rice flour, gelatin (capsule), magnesium stearate, silicon dioxide, maltodextrin, soy protein concentrate, water) are not counted.
Read the panel itself on the supplement facts page.
Label vs sales page
Which Protoflow ingredients are on the label but not on the sales page?
Six: vitamin E, niacin, ginkgo, tribulus, inosine and oat straw.
The sales page names eight ingredients: Chinese ginseng, cayenne pepper, damiana, saw palmetto, muira puama, Epimedium sagittatum, hawthorn berries and catuaba (Protoflow sales page). The label lists those eight and six more.
The six add up to 410 mg, about a quarter of the total. This site follows the label.
| Ingredient | Per 2 capsules | On the sales page? |
|---|---|---|
| Niacin (vitamin B3) | 75 mg | No |
| Vitamin E | 13 mg | No |
| Ginkgo biloba (leaf) | 120 mg | No |
| Tribulus (fruit) | 120 mg | No |
| Inosine | 50 mg | No |
| Oat straw (stalks) | 32 mg | No |
| The other eight lines | 1,209 mg | Yes |
Ginkgo matters to anyone on a blood thinner. Neither it nor niacin appears on the sales page, so do not rely on it for the full list.
Amounts and research
Which Protoflow active is present in the largest amount?
Hawthorn and epimedium tie at 250 mg each, about 15% of the actives apiece.
Hawthorn fruit and Epimedium sagittatum whole plant are the biggest lines, 250 mg each. Damiana and muira puama follow at 200 mg.
A bigger number does not mean a better-tested one. Hawthorn has little quality evidence for most uses (NCCIH, Hawthorn), and epimedium has no trial data for sexual function (MSK, Epimedium). Saw palmetto is the clearest dose gap: 84.5 mg here, against 320 mg in the large trials (Bent et al., NEJM 2006).
Profiles
Where can you read about each Protoflow ingredient?
Seven profile pages cover the 14 lines, grouped by what they share.
Each profile gives the printed amount, the studied dose, the evidence level and safety notes.
-
84.5 mg01Saw palmetto
84.5 mg per 2 capsules
Serenoa repens fruit
Evidence: No better than placebo for BPH symptomsVendor photo of the plant, not of the capsule contents.
Per 2 capsulesSaw palmetto 84.5 mg
Research320 mg of extract a day in large prostate trials (up to 960 mg)
Watch forMild stomach upset, dizziness or headache; it does not appear to change PSA readings.
Full profile -
250 mg + 20 mg02Hawthorn and cayenne
Hawthorn 250 mg, cayenne 20 mg
Crataegus fruit, Capsicum fruit; contains capsaicin
Evidence: Hawthorn: little or no quality evidence for most uses; Cayenne: no human evidence for the prostate or bladderVendor photo of the plant, not of the capsule contents.
Per 2 capsulesHawthorn 250 mg, Cayenne 20 mg
ResearchNo set dose; studied mainly in heart failure
Watch forDizziness and nausea are reported. Talk to your doctor first if you have a heart condition or take heart medicine.
Full profile -
250 mg + 120 mg03Epimedium and tribulus
Epimedium 250 mg, tribulus 120 mg
Horny goat weed; contains icariin, Tribulus terrestris fruit
Evidence: Epimedium: no trial data for sexual function; Tribulus: no robust rise in testosterone; low-level evidence for erectionsVendor photo of the plant, not of the capsule contents.
Per 2 capsulesEpimedium 250 mg, Tribulus 120 mg
ResearchNo human dose established
Watch forCase reports of a fast, irregular heartbeat; safety studies are lacking.
Full profile -
200 mg + 200 mg + 84.5 mg04Muira puama, damiana and catuaba
Muira puama 200 mg, damiana 200 mg, catuaba 84.5 mg
Turnera diffusa leaf, Ptychopetalum root, from Brazil, Bark sold under one name from several Brazilian trees
Evidence: Damiana: no human trials in men; Muira puama: not establishedVendor photo of the plant, not of the capsule contents.
Per 2 capsulesDamiana 200 mg, Muira puama 200 mg, Catuaba 84.5 mg
ResearchNo human dose established
Watch forFew side-effect data exist.
Full profile -
120 mg + 120 mg05Chinese ginseng and ginkgo
Chinese ginseng 120 mg, ginkgo 120 mg
Ginkgo leaf, Panax ginseng root (Asian ginseng)
Evidence: Ginkgo biloba: no memory benefit in that trial; not studied for the prostate; Chinese ginseng: some small trials for erectile functionVendor photo of the plant, not of the capsule contents.
Per 2 capsulesGinkgo biloba 120 mg, Chinese ginseng 120 mg
Research240 mg of extract a day in a 6-year memory trial
Watch forMay raise bleeding risk with blood thinners such as warfarin.
Full profile -
13 mg + 75 mg06Niacin and vitamin E
Niacin 75 mg (469% DV), vitamin E 13 mg (87% DV)
Natural-source vitamin E (d-alpha), succinate form, Vitamin B3; the label does not say which form
Evidence: Vitamin E: helps only if you are low; Niacin: above the adult upper limit for supplementsA drawing made for this site, not a photo of the capsule contents.
Per 2 capsulesVitamin E 13 mg, Niacin 75 mg
Research15 mg a day meets adult needs; upper limit 1,000 mg
Watch for13 mg is about 19 IU, far below the 400 IU a day that raised prostate cancer risk in the SELECT trial. Do not stack vitamin E products.
Full profile -
50 mg + 32 mg07Inosine and oat straw
Inosine 50 mg, oat straw 32 mg
A nucleoside the body also makes, Avena sativa, green oat stalks
Evidence: Inosine: not established; Oat straw: traditional use for mild stress and sleep onlyA drawing made for this site, not a photo of the capsule contents.
Per 2 capsulesInosine 50 mg, Oat straw 32 mg
ResearchNo dose set for this use; far higher doses in a Parkinson trial
Watch forRaises uric acid; kidney stones were more common at high doses. Ask a doctor if you have gout or kidney stones.
Full profile
Start with saw palmetto for the prostate herb, or niacin and vitamin E for the line above its limit.
Protoflow: from $1.63 a day60 capsules a bottle · packs of 2, 3 or 6 · 60-day money-back guarantee
See packsCommon questions
Does Protoflow contain ginkgo or tribulus?
Yes to both. Ginkgo is 120 mg and tribulus is 120 mg per serving, and the sales page names neither.
Both are two of the six lines the sales page omits (Protoflow sales page).
Ginkgo, 120 mg
May raise bleeding risk with warfarin (NCCIH, Ginkgo). See ginseng and ginkgo.
Tribulus, 120 mg
Studies used 400 to 750 mg a day, and 8 of 10 found no hormone change (Vilar Neto et al., Nutrients 2025). See epimedium and tribulus.
Form and origin
Are the Protoflow herbs standardized extracts, and where do they come from?
The label does not say. It prints plant part and milligrams, no extract ratio and no marker compound.
A standardized extract states how much of a marker compound it holds, such as icariin in epimedium. The Protoflow label states none. It names only the plant part, such as Fruit, Leaf, Root or Whole Plant.
It does not say where the herbs were grown. It names PhytoThrive Labs of Aurora, Colorado as distributor, but not the maker. The sales page says a "FDA registered" facility handles the ingredients, yet FDA issues no registration certificate and does not endorse a facility (FDA, Food Facility Registration Q&A). Ask the order desk at Protoflow order desk for sourcing details.
Other ingredients
What else is in the capsule besides the 14 actives?
Rice flour, gelatin, magnesium stearate, silicon dioxide, maltodextrin, soy protein concentrate and water.
The label prints these as other ingredients. The gelatin shell means the capsules are not vegetarian or vegan. Soy protein concentrate is a soy allergen (FDA, Food Allergies (major allergens)).
The sales page says "Non-GMO, vegan and gluten-free", which conflicts with gelatin. It also claims no non-essential fillers, yet the label lists rice flour and maltodextrin. The label wins.
FAQ
Protoflow ingredient questions
01What are the main ingredients in Protoflow?
The main ingredients by weight are hawthorn fruit and Epimedium sagittatum, 250 mg each per two capsules. Damiana and muira puama follow at 200 mg. The label lists 14 actives in all, 1,619 mg, with every amount printed.
02Which ingredients are on the label but not on the sales page?
Vitamin E, niacin, ginkgo, tribulus, inosine and oat straw. The sales page names eight ingredients (Protoflow sales page). These six add 410 mg and include niacin, which is above its adult supplement upper limit.
03Which active is present in the largest amount?
Two tie: hawthorn fruit and Epimedium sagittatum whole plant, 250 mg each per serving. Cayenne is smallest at 20 mg.
04Does Protoflow contain ginkgo?
Yes. The label lists Ginkgo Biloba (Leaf) at 120 mg per serving. The sales page does not name it. Ginkgo may raise bleeding risk with blood thinners, so ask your doctor first if you take one (NCCIH, Ginkgo).
05Does Protoflow contain tribulus?
Yes. The label lists Tribulus (Fruit) at 120 mg per serving, below the 400 to 750 mg used in studies (Vilar Neto et al., Nutrients 2025). The sales page does not name it.
06Are the Protoflow herbs standardized extracts?
The label does not say. It prints plant part and milligrams only, with no extract ratio and no marker compound such as icariin or ginsenosides. Ask the order desk for written specifications.
07Where do the Protoflow ingredients come from?
The label does not say. It names PhytoThrive Labs of Aurora, Colorado as distributor and prints no maker or country of origin for the herbs. Ask the order desk for written sourcing details.
08Why does the sales page list fewer ingredients than the label?
We do not know. The sales page names eight; the label prints fourteen. The label is what is in the bottle, so this site follows it.
Who wrote this
Written and reviewed by
Pages built from the Protoflow label, the sales page and linked NIH, FDA, FTC, NHS and peer-reviewed sources.
Last updated . Learn about our editorial standards and how we check reviews. This website is run by Goprotoflow, a licensed U.S. retail desk for Protoflow, not by the manufacturer or by PhytoThrive Labs. We earn money when you buy through our order links.
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