About this guide, our sources and affiliate links

Neomercazole.com explains Neo-Mercazole (carbimazole) and the other medicines used for an overactive thyroid in plain English, for patients and carers.

Independent of the manufacturers

This site is not run by, endorsed by or connected with any company that makes, licenses or distributes Neo-Mercazole, carbimazole, methimazole or propylthiouracil. Neo-Mercazole is a trade mark of its owners and is used here only to identify the medicine. We do not provide medicines, prescriptions or a customer support line.

Where our information comes from

We write from primary sources and say which one each page relies on:

• Official product information, such as national data sheets, summaries of product characteristics and US prescribing labels.
• Regulators and health services, such as the UK MHRA, NHS and NICE, Medsafe in New Zealand and the US FDA.
• Clinical guidelines from the European and American thyroid associations.
• Published studies, which we read through their original abstracts or full text and summarise with the authors’ own numbers.

Every article lists its sources and the date we checked them. When sources disagree, we say so. No clinician has reviewed this site yet, and we do not claim one has.

Affiliate links

Some links to online pharmacies are affiliate links: if you buy through them, we may earn a commission at no extra cost to you. They are marked to search engines as sponsored, and pages that list pharmacies say so at the top. Partners have no say over what we write about a medicine, its risks or its alternatives.

Not medical advice

This guide cannot assess you. Do not start, stop or change an antithyroid medicine without your doctor. If you have a sore throat, fever, mouth ulcers, yellow skin or severe stomach pain while taking one, stop it and seek medical help the same day.

Corrections

If you find a mistake, we want to fix it. Each page shows when it was last updated.