How ACCRUFeR Works

ACCRUFeR® (ferric maltol) is iron you’ll actually take

ACCRUFeR is uniquely formulated with a MALTOL SHIELDTM that keeps iron protected as it passes through your stomach so it is ready for absorption in the small intestine. This can minimize the risk of gastrointestinal (GI) reactions like gas, diarrhea, and nausea.

Man smiling with arms crossed and overlay of ACCRUFeR with maltol shield TM inside stomach

ACCRUFeR’s MALTOL SHIELDTM supports iron absorption and tolerability

The iron in ACCRUFeR is protected by a sugar-like substance called maltol. The maltol shields the iron from the stomach so it breaks down where it's needed in the small intestine. This leads to demonstrated absorption and limits the amount of “free” or unabsorbed iron in your body.

ACCRUFeR method of action


Protecting iron from the stomach is key to achieving absorption and minimizing the risk of GI side effects.

  • When traditional iron supplements break down in the stomach, the iron clumps together, making it hard for the body to absorb.
  • Unbound iron can lead to inflammation in the gut and disrupt the microbiome which contributes to GI side effects like pain, constipation, diarrhea, or nausea.

Side Effects of Iron Supplements


ACCRUFeR in action

Your body might be using only a fraction of the iron you take in from OTC supplements. See what sets ACCRUFeR apart:

Woman looking up

ACCRUFeR’s Unprecedented Tolerability

Intolerable side effects can be a barrier to staying on treatment. ACCRUFeR is different. In clinical studies, fewer than 5% of patients taking ACCRUFeR stopped taking it because of adverse reactions.*

*Out of 175 patients

Taking ACCRUFeR

Patients take a 30 mg gluten-free capsule twice a day. Because ACCRUFeR stays intact in the stomach, its iron is ready to be absorbed in the small intestine, so a low dose twice a day is enough to raise iron levels.

ACCRUFeR can be taken on its own. Stool softeners and supplements, like Vitamin C, are not needed to help ACCRUFeR work or to manage side effects.

How should I take ACCRUFeR?

  • Take ACCRUFeR exactly as your doctor tells you. Tell your doctor about any medical conditions and medicines that you currently take, including over-the-counter medications, vitamins, and herbal supplements.
  • Take ACCRUFeR twice a day on an empty stomach 1 hour before or 2 hours after meals.
  • Swallow ACCRUFeR capsules whole. Do not open, break, or chew the capsules.

Please review the Product Information sheet for more information.