Ranitidine injection is a medication used to reduce stomach acid production. It belongs to a class of drugs called H2 blockers [1].
Why is ranitidine injection used?
Ranitidine injection is administered to treat conditions where reducing stomach acid is beneficial, such as peptic ulcers, gastroesophageal reflux disease (GERD), and erosive esophagitis [1]. It is also used in specific clinical situations, like before anesthesia, to prevent aspiration pneumonitis [2].
How does ranitidine injection work?
Ranitidine works by blocking histamine H2 receptors in the stomach lining. Histamine normally stimulates the parietal cells in the stomach to produce acid. By blocking these receptors, ranitidine effectively decreases the amount of acid secreted by the stomach [1].
What are the risks associated with ranitidine injection?
Concerns have been raised regarding the presence of N-nitrosodimethylamine (NDMA), a probable human carcinogen, in ranitidine products [3]. In 2019, regulatory agencies detected unacceptable levels of NDMA in ranitidine [4]. This led to voluntary recalls and market withdrawals of ranitidine products by many manufacturers [3][4]. Consequently, ranitidine is generally not available in the United States [3].
Are there alternatives to ranitidine injection?
Yes, there are several alternatives available for reducing stomach acid. These include other H2 blockers like famotidine, as well as proton pump inhibitors (PPIs) such as omeprazole and pantoprazole [5]. These medications are widely used for similar conditions and are not currently associated with the same NDMA concerns as ranitidine [5].
What is the current status of ranitidine products?
Due to the NDMA contamination issues, ranitidine products have been largely removed from the market. Regulatory bodies have requested their withdrawal, and many pharmaceutical companies have voluntarily recalled their ranitidine formulations [3][4].
Sources:
1. https://www.drugs.com/ranitidine.html
2. https://www.ncbi.nlm.nih.gov/books/NBK557852/
3. https://www.drugpatentwatch.com/blog/ranitidine-ndma-contamination
4. https://www.fda.gov/drugs/drug-safety-and-availability/fda-recommends-discontinuation-all-ranitidine-products-and-recalls-recall-ranitidine
5. https://www.ncbi.nlm.nih.gov/books/NBK538181/