In bisglycinate, each iron atom is bound to two glycine molecules, giving it several advantages over standard forms like sulfate or fumarate. It’s absorbed via amino-acid pathways rather than the inorganic-iron route, is protected from inhibitors like phytates, tannins or calcium, and — crucially — is much better tolerated digestively, as it doesn’t release free ionic iron in the stomach. That means far less of the nausea, abdominal pain and constipation common with standard iron supplements.

The iron here uses Albion Minerals’ patented Ferrochel technology — the most studied iron bisglycinate in the world, backed by over 100 studies on bioavailability and tolerance. It’s enriched with 100mg of Quali-C vitamin C, made in Scotland by DSM, which boosts iron absorption by keeping it in the more assimilable ferrous (Fe2+) form. The formula contains just four ingredients: vitamin C, iron bisglycinate, rice starch and a vegetable capsule — no magnesium stearate, no titanium dioxide.

Iron contributes to reduced tiredness and fatigue and to normal energy metabolism (EFSA), being essential to haemoglobin, which carries oxygen to tissues. Women of childbearing age are the population most affected due to regular menstrual losses — nearly one in four has insufficient iron reserves — with even higher needs during pregnancy. Vegetarians and vegans rely mainly on non-haem iron, which absorbs less efficiently and is further inhibited by phytates and tannins in whole grains, legumes and tea; bisglycinate bypasses much of this limitation. Endurance athletes are another at-risk group due to red blood cell breakdown and sweat losses.

Take 1 capsule a day with a large glass of water, ideally 30 minutes before a meal or 2 hours after. Avoid taking with tea, coffee, dairy or whole grains. A 3-month course (matching the 90-capsule bottle) is recommended to rebuild reserves; consider a blood test before and after. Keep iron 2 hours apart from zinc and magnesium to avoid absorption competition.

Do not exceed 1 capsule a day. People with haemochromatosis or iron overload must not supplement without medical advice. Supplementation during pregnancy and breastfeeding should be supervised by a healthcare professional. Iron can reduce the absorption of certain medications (levothyroxine, antibiotics) — allow a 2-hour gap. This food supplement is not a substitute for a varied and balanced diet. Keep out of young children’s reach.

Does iron bisglycinate cause constipation?

The Ferrochel form doesn’t release free ionic iron in the digestive tract, considerably reducing the risk of constipation, nausea or abdominal pain compared to iron sulfate or fumarate.

How long until I feel the effects?

Initial effects, notably reduced fatigue, are usually felt after 2–4 weeks; full reserve replenishment needs at least 3 months.

Is it suitable for vegetarians?

Yes — a vegetable capsule with no animal ingredients, and particularly relevant since vegetarians and vegans absorb non-haem dietary iron less efficiently.

Herba Barona is an independent specialist supplement shop in the heart of Paris — established in 2006. What you order is genuinely on our shelves: we ship from our own stock, with no dropshipping and no long waits.

Visit us at 10 rue Théophile Roussel, Paris 12 — or use Click & Collect and pick up your order in-store. We also deliver across France and Europe. Friendly, expert advice in English from our team.

Where is the shop?

Herba Barona is at 10 rue Théophile Roussel, 75012 Paris — a two-minute walk from Ledru-Rollin (line 8), close to Bastille. Open Tuesday to Saturday, 9:30 am–6:30 pm.

Can I order online or collect in store?

Yes. We ship across France and Europe under the same conditions as our French store, or choose Click & Collect to pick up your order for free at our Paris shop.