Preferred Nutrition Preferred Nutrition - Mild Iron Bisglycinate, 150 caps
Preferred Nutrition Mild Iron Bisglycinate - Preferred Nutrition Mild Iron Bisglycinate combines stomach-friendly iron with vitamin B12, folic acid, and vitamin C for increased absorption and bioavailability. Ferrous bisglycinate is a gentle form of iron with minimal gastrointestinal effects. Each daily capsule provides 28 mg of elemental iron to help prevent iron-deficiency anemia and associated tiredness and fatigue.

Price
Regular Canadian retail price: $19.98 CAD. Price Vault members pay below retail on this product. Member pricing is private and shown after a free opt-in, with no membership fee, no minimum order and no subscription.
In stock. Free shipping across Canada on orders over $89, flat $9.95 under that. 30 days to request a return, with return shipping paid by the customer. Ships from Victoria, BC.
See member pricing on Preferred Nutrition Preferred Nutrition - Mild Iron Bisglycinate
Why people keep reordering it
- Highly absorbable forms
- Chelated forms your body takes up, instead of oxide that mostly passes through.
- Calm and recovery
- Supports muscle relaxation, sleep quality and everyday stress resilience.
- Gentle on digestion
- Formulated to skip the laxative effect of cheaper magnesium.
Best suited to: anyone who quit iron because of stomach upset, heavy periods with a confirmed low ferritin, someone who wants one capsule, not three.
What the research supports
Each capsule gives 28 mg of elemental iron as bisglycinate, plus 60 mg vitamin C and 400 mcg folate. 150 capsules last five months at one a day.
Repletion studies typically use 30 to 100 mg elemental iron a day.
- Iron stores (evidence: strong, from randomized controlled trial, meta-analysis)
- Bisglycinate ferrous iron absorbs at least as well as conventional iron salts at equal or lower doses. At about 28 mg elemental daily it rebuilds iron stores that have run low.
- Digestive comfort (evidence: moderate, from randomized controlled trial)
- The two glycine molecules bound to this iron keep it from releasing loose in the stomach, which is what irritates the gut. Head-to-head trials report fewer digestive complaints than iron salts.
Read the literature: Iron stores on PubMed, Digestive comfort on PubMed.
Is it right for you
Worth it if
- Anyone who quit iron because of stomach upset
- Bisglycinate is chelated rather than an iron salt, and trials comparing the two report fewer reports of nausea and constipation at the same elemental dose.
- Heavy periods with a confirmed low ferritin
- 28 mg elemental daily is in the range used to rebuild stores, and the 400 mcg of folate covers a nutrient that also gets drawn down with regular blood loss.
- Someone who wants one capsule, not three
- The full 28 mg is in a single daily capsule, which also avoids splitting doses through the day, something that actually reduces the fraction absorbed.
Look elsewhere if
- Someone taking a prenatal or iron-containing multi
- Check what you already take first. This adds another 400 mcg of folic acid and 28 mg of iron on top, and iron is stored rather than flushed out when you overshoot.
- Someone whose main problem is low B12
- 8 mcg of cyanocobalamin barely covers a daily requirement. Rebuilding B12 orally usually calls for 500 to 1000 mcg, ideally as methylcobalamin under the tongue.
- A man or postmenopausal woman with untested iron
- Get ferritin measured before starting. Daily needs there are 8 mg, the body has no route to dump the excess, and iron is one of the few supplements where more is genuinely worse.
What to expect
Nothing in the first week. If your stores are genuinely low, energy usually shifts somewhere between three and six weeks, and blood markers take two to three months of daily use to move meaningfully. If your iron was never low, you will feel no difference at all, so this is a supplement worth testing for rather than guessing at.
How it compares
- Compared with a ferrous sulfate or ferrous fumarate tablet
- The glycine chelate does not dissociate into free iron in the stomach the way a salt does, which is why the gut complaints that make people abandon iron are less common on it. The tradeoff: You pay noticeably more per milligram of elemental iron, and the cheap salts do raise stores just as effectively in people who tolerate them fine.
- Compared with a plain 28 mg bisglycinate capsule with nothing added
- This one bundles the vitamin C and the 400 mcg of folate, so an iron rebuild does not need a second and third bottle beside it. The tradeoff: You lose control over the folate. If you already get 400 mcg elsewhere, a bare bisglycinate would let you avoid stacking it.
Product details
- Medicinal ingredients
- Vitamin C (ascorbic acid), Iron (ferrous (II) bisglycinate), Folate (folic acid), Vitamin B12 (cyanocobalamin)
- Ingredient form
- caps
- Servings per container
- 150
- Suggested use
- 1 capsule daily with food, a few hours before or after taking other medications or natural health products, or as directed by a health care practitioner.
- Country of manufacture
- Canada
- Independent testing
- ISURA
- Certifications
- Non-GMO, Made in Canada
- Storage
- Store in a cool, dry place
- Brand
- Preferred Nutrition
How to take it
1 capsule daily with food, a few hours before or after taking other medications or natural health products, or as directed by a health care practitioner.
- Store in a cool, dry place away from direct light.
- Keep out of reach of children.
- Consult a practitioner if you are pregnant, nursing or on medication.
Ingredients
Each capsule contains
- Vitamin C (ascorbic acid)
- 60 mg
- Iron (ferrous (II) bisglycinate)
- 28 mg
- Folate (folic acid)
- 400 mcg
- Vitamin B12 (cyanocobalamin)
- 8 mcg
Non-medicinal ingredients
Cellulose, gelatin capsule (gelatin, water), vegetable grade magnesium stearate (lubricant), silica, croscarmellose sodium.
Free from
Contains no artificial preservatives, colours, or sweeteners; no dairy, starch, sugar, wheat, gluten, yeast, soy, corn, egg, fish, shellfish, salt, tree nuts, or genetically modified genes or proteins.
Interactions and cautions
- Medications
- May reduce absorption of certain antibiotics and thyroid medication.
- Timing
- Separate from medications by 2 to 4 hours unless directed otherwise by a healthcare practitioner.
- Pregnancy and breastfeeding
- Consult a healthcare practitioner before use if pregnant or breastfeeding.
- General
- Use only as directed. Discontinue and consult a practitioner if you experience an adverse reaction.
This product is not intended to diagnose, treat, cure or prevent disease. Consult a healthcare practitioner before use. Free certified advisors are available at 1-888-386-1211, Mon to Fri, 9am to 5pm PT.
Questions about Preferred Nutrition - Mild Iron Bisglycinate
- Is this the genuine, authentic product?
- Yes. It is identical to what you would pay full price for anywhere else, sourced through our authorized supplier relationships.
- How is the price below retail?
- We buy direct, with nobody in the middle taking a cut, and we sell it for close to what we paid. You see the price privately because you have unlocked the Vault.
- How fast does it ship?
- Orders placed before 12pm PT are processed the same day and ship within two business days. Shipping is free over $89, and a flat $9.95 under that.
- Can I return it?
- You have 30 days after it arrives to request a return. Product must be unused, in its original packaging, with proof of purchase, and return shipping is paid by you. Find it cheaper anywhere in Canada and we will match the price.