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Can I take Carmibazole and Collagen together?

Drug interaction guide

There is no known interaction between carbimazole and collagen supplements. Carbimazole is a medication used to treat an overactive thyroid, while collagen is a protein supplement often taken for skin, joint, or hair health. They do not interfere with how each other works in the body.

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Why this happens

Carbimazole is processed by the liver and converted into its active form, methimazole, to regulate thyroid hormone production. Collagen is broken down into amino acids in the digestive tract, similar to any other dietary protein. These two substances use different pathways for absorption and metabolism, and they do not have opposing or overlapping effects on the body's systems.

What you should do

You can safely take carbimazole and collagen together. You do not need to time them apart or change your dose. However, if you are taking collagen as part of a 'multi-nutrient' supplement, check the label for iodine or kelp, as high levels of iodine can interfere with your thyroid treatment.

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Using other medicines

Taking 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.

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Article history

The information on this page is written and peer reviewed by qualified clinicians.

  • 24 Jan 2026 | Originally published
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