Is Iron (Ferrous Sulfate) Safe with Ozempic?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Take iron supplements on an empty stomach if tolerated, or with a small amount of food if GI side effects occur. Avoid taking iron simultaneously with calcium supplements or antacids. Monitor CBC and ferritin levels every 6-12 months, particularly in menstruating women.
Why this interaction occurs
While iron is not fat-soluble, delayed gastric emptying from Ozempic alters the transit time and pH environment critical for ferric-to-ferrous iron conversion and duodenal absorption. Reduced meat intake from appetite suppression also decreases heme iron, the most bioavailable dietary form. Combined, these effects increase iron deficiency risk.
Evidence
Evidence level: limited.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 66,161 reports mentioning Ozempic. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Ozempic + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Iron (Ferrous Sulfate) interactions → · All Ozempic interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.