Iron Supplements

Common signs include ongoing tiredness, weakness, pale skin, feeling cold, dizziness, and brittle nails. These overlap with plenty of other causes, so don't guess — a simple blood test through your healthcare provider is the only way to confirm whether you're low in iron before you start a supplement.

Heme iron is the form found naturally in meat, and your body absorbs it through its own dedicated pathway — typically more efficiently and with less stomach upset. Non-heme iron is the form in plants and most standard supplements; it's absorbed less readily and is more affected by what you eat alongside it. If regular iron hasn't agreed with you, heme iron is worth a look.

Iron bisglycinate is iron bound to glycine, an amino acid. The bond protects the iron through digestion, which is why bisglycinate has a reputation for being gentle and non-constipating compared with older forms like ferrous sulfate. It's one of the most common forms in Canadian iron supplements.

If regular iron tablets have bothered your stomach, several options are known for being gentler: heme iron, iron bisglycinate, liposomal iron (iron wrapped in a fat layer that helps it pass through the stomach), and liquid iron, which lets you adjust the dose. Chewable iron is a convenient choice if pills are the problem rather than the iron itself.

On an empty stomach, about an hour before or two hours after a meal. If that bothers your stomach, a small amount of food helps. Vitamin C improves absorption — that's why many formulas include it — while coffee, tea, and calcium work against it, so keep iron a couple of hours away from those.

Only if you actually need it. If a healthcare provider has confirmed you're low, daily iron as directed is the usual approach. But unlike many nutrients, extra iron isn't harmless — the body has no easy way to get rid of the excess — so don't take it "just in case."

Most people who are genuinely low start noticing more energy within a few weeks, with levels typically taking a couple of months or more to rebuild. Stick with the dose and duration your provider suggests, and re-test rather than stopping the moment you feel better.

Yes. Too much iron can be harmful, which is why it's the one supplement you shouldn't start without a confirmed need. Keep all iron products well out of reach of children — accidental swallowing of iron-containing products is one of the most serious poisoning risks for young children. If you're pregnant or take medication, check with your doctor or pharmacist first.