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What is the difference between ferrous gluconate and ferrous sulfate?
Ferrous gluconate is a ferrous iron salt with a gentler tolerability profile than ferrous sulfate. It delivers iron at a lower risk of constipation, nausea, and stomach cramps. Ferrous sulfate is more widely used but is the form most associated with digestive side effects.
Which iron supplement is least likely to cause constipation?
Ferrous gluconate is among the better-tolerated forms available. Ferrous + C uses ferrous gluconate alongside 70mg of vitamin C, which improves absorption so less iron passes through unabsorbed, further reducing the chance of digestive discomfort.
How long does iron take to work for tiredness and fatigue?
Iron supports haemoglobin formation and energy production. Ferrous + C is formulated to help relieve tiredness and fatigue when dietary iron intake is inadequate. Individual results vary. Talk to your GP if tiredness persists, as causes can differ.
When is the best time of day to take an iron supplement?
On an empty stomach or between meals generally improves iron absorption. If stomach sensitivity is a concern, taking it with a small amount of food is fine. Avoid taking it alongside tea, coffee, or calcium-rich foods, which can reduce absorption.
What are the side effects of iron supplements?
Iron supplements can cause nausea, constipation, or dark stools in some people. Ferrous gluconate is gentler than ferrous sulfate, but individual responses vary. If side effects persist, talk to your health professional. Not for the treatment of iron deficiency conditions.
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