Try Runner's Iron for a full 90 days. If your legs don't feel fresher, your pace doesn't come back, or you're just not feeling the difference, email us for a full refund — bottle empty or not. No forms, no fuss. Fewer than 1% of runners ever ask.

Running drains iron three ways a sedentary body doesn't: footstrike hemolysis breaks red blood cells in your feet, running causes tiny covert bleeding in your gut, and you lose iron in sweat — then a heavy cycle empties the tank further. That's why a runner can feel wrecked at a ferritin the chart calls "normal." Runner's Iron refills the tank with gentle chelated bisglycinate (absorbed 2–3× better than sulfate), vitamin C to drive it in, and B12 + folate to build the oxygen-carrying blood your legs run on.

Yes. We use iron bisglycinate — the gentle chelated form — so the dose is low and the gut fallout most runners quit over is far less. Take it with the built-in vitamin C, away from dairy and caffeine, and most people tolerate it daily with no trouble. It's a supplement, not a medication; if you're pregnant or on iron-affecting meds, check with your doctor first.

Gentle chelated iron bisglycinate, vitamin C (for absorption), and B12 + folate (to finish blood-building). No harsh ferrous sulfate, no fillers you can't pronounce. Dosed as a daily top-up, not a megadose.

One serving a day with water and the built-in vitamin C, ideally away from coffee, tea, and dairy. Consistency is what refills the tank — this is daily maintenance for a body that drains every week, not a one-off fix.

Is it safe / gentle on my stomach?

Yes — that's the whole point. We use iron bisglycinate, the gentle chelated form that's absorbed 2–3× better than ferrous sulfate, so the dose is lower and the gut fallout most runners quit over is far less. Take it with the built-in vitamin C, avoid dairy or caffeine within an hour, and most people tolerate it daily with no trouble.

My doctor said my iron is "normal." Do I still need this?

"Normal" ranges are built on sedentary people. Runners drain iron three ways sedentary people don't, and many experts say a female endurance athlete wants ferritin well above the low end of the range, not at it. Plenty of runners feel flat at a "normal" number and better once their reserves are actually full. (We're a supplement, not a diagnosis — but you don't need permission to keep your own tank topped up.)

How is this different from the iron my doctor recommended?

Most prescribed iron is ferrous sulfate — effective but harsh, which is why so many people quit it. Ours is the gentle bisglycinate form paired with vitamin C, B12 and folate, dosed as a daily top-up rather than a megadose your gut fights.

How do I take it?

One daily serving with water and the built-in vitamin C, ideally away from coffee, tea, and dairy. Consistency is what refills the tank — this is maintenance for a body that drains every week, not a one-off fix.

How long until I feel it?

Many runners notice the crash easing in the first couple of weeks and fresher legs / lower HR around week 3–4. Refilling depleted stores takes months, which is why the multi-month bundles exist.

What if it doesn't work for me?

90-day money-back guarantee. Fewer than 1% of customers ever claim it — but if you're not feeling the difference, you're covered.