Iron bisglycinate belongs to the family of chelated irons, meaning the mineral is bound to two glycine molecules that form a protective shell around it. This specific structure, patented as Ferrochel by Albion Laboratories (TRAACS label), allows iron to cross the intestinal barrier without the usual discomfort caused by classic iron salts like sulfate or fumarate. Research shows iron bisglycinate’s bioavailability can be up to three times higher than iron sulfate, while significantly reducing gastric upset. Each two-capsule dose provides 14 mg of elemental iron, 100% of the nutrient reference values, covering daily needs without risk of overload.

Lactoferrin is a glycoprotein naturally present in breast milk and cow’s milk. Its role in iron metabolism is twofold: it captures ferric ions in the gut and helps transfer them into the bloodstream, while also helping regulate absorption to avoid excess. At 200 mg per dose, the lactoferrin in Fer3 Dynveo supports gentle, gradual assimilation, particularly suited to people sensitive to iron supplements. Vitamin C (L-ascorbic acid, Quali-C quality from DSM) works differently: it converts ferric iron (Fe3+) into ferrous iron (Fe2+), the form most easily absorbed by intestinal cells. With 180 mg per dose (225% of the NRV), this generous vitamin C intake reinforces the bisglycinate’s effect while offering its own antioxidant benefits — together, the three actives create a genuine virtuous circle.

Iron is an essential trace element involved in many physiological functions. It takes part in forming haemoglobin, the red blood cell protein that carries oxygen from the lungs to every tissue, and in producing muscle myoglobin and supporting many enzymes involved in energy metabolism. Iron deficiency often shows up as persistent tiredness, breathlessness on exertion, difficulty concentrating or unusual paleness. Some groups are more exposed to deficiency: women of childbearing age (due to menstrual losses), pregnant women, endurance athletes, growing teenagers, older adults, and those following a vegetarian or vegan diet.

Take 2 capsules a day, ideally with a meal and a large glass of water — morning or lunchtime is generally advised, as iron is better absorbed earlier in the day. It is best to avoid taking it alongside tea, coffee or calcium-rich dairy products, which can reduce iron absorption. A typical course runs 1 to 3 months depending on initial iron status; a blood test (ferritin, haemoglobin) before and after the course helps adjust duration and dosage. The 60-capsule bottle covers one month.

Contains lactoferrin derived from cow’s milk — not suitable for people allergic to cow’s milk protein or following a strictly vegan diet. Not recommended for people with haemochromatosis or iron overload. If pregnant, breastfeeding or taking medication (particularly antibiotics or thyroid treatments), seek medical advice before supplementing. Do not exceed the recommended daily dose. Keep out of reach of young children. Store in a cool, dry place away from light. Food supplements should not replace a varied, balanced diet and a healthy lifestyle.

What is the difference between iron bisglycinate and regular iron?

Iron bisglycinate is a chelated form where the iron is bound to two glycine molecules, protecting it from stomach acid and easing its passage through the intestinal wall. Classic iron salts (sulfate, fumarate, gluconate) lack this protection and more often cause digestive side effects. Bisglycinate offers markedly higher bioavailability, allowing results with more moderate doses.

Is lactoferrin compatible with a vegetarian diet?

Lactoferrin is a protein extracted from cow’s milk, so it suits vegetarian diets that include dairy (lacto-vegetarian) but not strict vegan diets or people allergic to milk protein. Other iron bisglycinate formulas without lactoferrin are available for those with these restrictions.

Can Fer3 Dynveo be combined with other supplements?

Yes — Fer3 can be combined with most food supplements. However, it is best to space out intake from supplements containing calcium, zinc or magnesium, which can compete with iron for intestinal absorption; a two-hour gap is usually enough. Our team at Herba Barona can advise on the best combinations.

How long does it take to feel the effects of Fer3?

Early signs of improvement (reduced tiredness, better focus) generally appear after two to four weeks of regular supplementation. Fully rebuilding iron reserves (measured by ferritin levels) usually takes one to three months, depending on the initial level of deficiency. Follow-up blood work with your doctor or pharmacist helps assess progress and adjust duration if needed.

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.