Ranitidine, commonly found in 150 mg tablets, is used to treat and prevent conditions related to excess stomach acid [1]. These conditions include heartburn, indigestion, and gastroesophageal reflux disease (GERD) [2][3]. It is also prescribed to treat peptic ulcers, such as stomach ulcers and duodenal ulcers [1][3].
How does ranitidine 150 mg work to reduce stomach acid?
Ranitidine is a histamine-2 blocker, often called an H2 blocker [4]. It works by reducing the amount of acid produced by the stomach [4]. It achieves this by blocking the action of histamine on parietal cells in the stomach lining, which are responsible for acid secretion [5]. By decreasing stomach acid, ranitidine helps to alleviate symptoms like burning sensations in the chest and stomach and can aid in the healing of ulcers [1][3].
When should I take a 150 mg ranitidine tablet?
For heartburn and indigestion, a 150 mg tablet is typically taken as needed for symptom relief, or up to twice daily [1][3]. For treating active ulcers, a higher dose might be prescribed by a healthcare provider [3]. It is important to follow the specific dosage instructions provided by a doctor or on the medication's packaging [1][3].
Are there other strengths of ranitidine tablets available?
Yes, ranitidine tablets were available in various strengths, with 150 mg and 300 mg being common for different indications [1][3]. The 300 mg strength was often used for more persistent or severe conditions, including the treatment of ulcers [1][3].
What are the potential side effects of ranitidine?
While ranitidine was generally well-tolerated, some individuals experienced side effects. Common side effects could include headache, dizziness, constipation, or diarrhea [1]. More serious side effects were rare but could occur [1].
Why was ranitidine recalled in the United States?
In April 2020, the U.S. Food and Drug Administration (FDA) requested the withdrawal of all prescription and over-the-counter (OTC) ranitidine products from the U.S. market [6]. This action was taken due to the presence of unacceptable levels of N-nitrosodimethylamine (NDMA), a probable human carcinogen, in ranitidine products [6]. NDMA is a type of contaminant that can form over time and in certain storage conditions [6].
What are the alternatives to ranitidine for acid reduction?
Following the market withdrawal of ranitidine, several alternatives are available for managing conditions related to excess stomach acid. These include other H2 blockers, such as famotidine, and proton pump inhibitors (PPIs), like omeprazole, lansoprazole, and pantoprazole [4]. Antacids can also provide short-term relief for heartburn symptoms [4].
Can I still buy ranitidine outside the United States?
Availability of ranitidine products outside the United States can vary significantly by country and regulatory agency [7]. While it was withdrawn from the U.S. market, some other regions may still have it available, though regulatory actions and product recalls have occurred globally in response to NDMA concerns [7]. It is advisable to check the local regulatory status and product availability in specific countries.