Product Description
You're three weeks deep in a build block and suddenly every workout feels harder than it should. Recovery's off. Breathing's labored on easy runs. Before you question your fitness, check your iron. 15-35% of female endurance athletes and 3-11% of male athletes deal with iron deficiency—and most iron supplements create more problems than they solve.
Proferrin Clear delivers heme iron polypeptide—the same form of iron your body absorbs from red meat, now in a clean dye-free capsule. Clinical studies show heme iron absorption rates of 15-35%, compared to just 2-10% from standard iron pills. This isn't just better absorption. It's a completely different pathway that sidesteps the gut issues that make most athletes quit their iron supplements.
What Makes It Different
10x Better Absorption Than Standard Iron – Proferrin Clear uses your body's natural heme iron pathway—the same one that processes iron from a steak. One capsule delivers as much absorbable iron as 23 chicken breasts, without planning meals around coffee, calcium, or acid blockers.
Zero Gut Drama – Traditional iron supplements cause nausea, constipation, and stomach pain. Proferrin's small dose (10.5mg per capsule) means your gut processes what it needs without the usual side effects. Take it with breakfast, with your coffee, whenever.
The Science of Iron
Heme iron polypeptide is derived from bovine hemoglobin and absorbed through specialized receptors in your intestinal wall. Endurance athletes face increased iron loss through foot-strike hemolysis, GI bleeding, and sweat. Your body can't make iron, so when stores run low, performance tanks.
How to Use Proferrin Clear
Take 1-3 capsules daily with or without food. If you're deep in training or have confirmed low ferritin (below 30-50 μg/L for athletes), start with 2-3 capsules. Once levels normalize, 1 capsule maintains stores without overdoing it. Get your ferritin checked every 8-12 weeks to dial in your dose.
Athletes who've struggled for years with low ferritin report finally hitting normal ranges after switching to heme iron. Distance runners, cyclists, and rowers use it to maintain iron levels without the nausea that sidelines traditional supplementation.
- Gluten free
Supplement Facts
30 Servings
Serving Size: 1 Capsule
Serving Per Container: 30
| Amount Per Serving | ||
|---|---|---|
| % Daily Value* | ||
| Iron (as Heme Iron Polypeptide Proferrin®) 10.5mg | ** | |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
Always Happy Promise: Don't like a product? Tell us within 30 days of receipt and we'll make it right and make you happy. Here at The Feed, we want you to love your experience and the sports nutrition products you purchase. If, for any reason, you are not satisfied with your nutrition specific purchase, tell us.
We do not accept returns on food items that have been opened, but we will issue a store credit if you are unsatisfied. In the event of a return, you must first contact us before sending back a return shipment.
Consumable products over $40 receive a 50% store credit. This includes specialty nutrition products such as ketones or supplements/vitamins.
Proferrin Clear FAQ's
Everything you need to know before getting started.
Heme iron uses your body's natural absorption pathway—the same one that processes iron from meat. It bypasses the pathway that causes nausea and constipation with standard iron pills, delivering 10-23x better absorption with minimal side effects.
Most athletes tolerate Proferrin Clear significantly better than traditional iron supplements. The small dose (10.5mg) and unique absorption pathway mean less "free iron" in your gut causing irritation. Customer reviews consistently report zero stomach issues.
Get bloodwork checking ferritin and hemoglobin. For endurance athletes, ferritin below 30-50 μg/L indicates low stores. Symptoms include persistent fatigue, poor recovery, shortness of breath during easy efforts, and declining performance despite consistent training.
Yes. Proferrin Clear is NSF Certified for Sport, meaning every batch is tested for banned substances. It contains only 4 ingredients: heme iron polypeptide, gelatin capsule, magnesium stearate, and silicon dioxide.
Most athletes notice energy improvements within 2-4 weeks. Ferritin levels typically increase after 8-12 weeks of consistent supplementation. Get bloodwork after 8-12 weeks to assess progress and adjust dosing.