Can I take Acetazolamide and Iron supplements together?
Drug interaction guide
Originally published 14 Mar 2026
Meets Patient’s editorial guidelines
- DownloadDownload
- Share
- Language
- Discussion
- Audio Version
Taking acetazolamide and iron supplements together may make the iron supplement less effective. This is because acetazolamide can change the environment in your stomach and gut, making it harder for your body to absorb the iron.
In this article:
Video picks for Drug interactions
Continue reading below
Why this happens
Acetazolamide is a carbonic anhydrase inhibitor that can increase the pH (reduce the acidity) of the stomach and upper digestive tract. Iron requires an acidic environment to be absorbed properly by the body. By making the stomach less acidic, acetazolamide reduces the amount of iron that enters your bloodstream.
What you should do
Back to contentsTo ensure you get the full benefit of your iron supplement, try to space the doses apart. It is usually recommended to take your iron supplement at least 2 hours before or 2 hours after taking acetazolamide. If you feel unusually tired or pale, speak to your doctor as they may want to check your iron levels.
Continue reading below
Using other medicines
Back to contentsTaking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.
Disclaimer
This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.
Patient picks for Drug interactions

Treatment and medication
Can I take Amlodipine and Omemprazole together?
There is no significant interaction between amlodipine and omeprazole. It is generally safe to take these two medicines together.

Treatment and medication
Can I take 150 and Zigduo together?
Taking aspirin (75mg to 150mg) with Xigduo (which contains dapagliflozin and metformin) can increase the risk of your blood sugar dropping too low (hypoglycaemia). It may also increase the risk of a rare but serious condition called lactic acidosis, where too much acid builds up in your blood.
Continue reading below
Article history
The information on this page is written and peer reviewed by qualified clinicians.
14 Mar 2026 | Originally published

Ask, share, connect.
Browse discussions, ask questions, and share experiences across hundreds of health topics.

Feeling unwell?
Assess your symptoms online for free
Sign up to the Patient newsletter
Your weekly dose of clear, trustworthy health advice - written to help you feel informed, confident and in control.
By subscribing you accept our Privacy Policy. You can unsubscribe at any time. We never sell your data.