We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is Ranitidine?

Tricia Christensen
By
Updated May 17, 2024
Our promise to you
WiseGEEK is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGEEK, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Ranitidine, which may be more recognizable by one of its brandnames, Zantac®, is a medication designed to treat stomach disorders of many types, including ulcers, gastrointestinal reflux disease, and chronic indigestion. It is effective in these instances because it lowers production of stomach acids. This may help heal lesions in the stomach, like ulcers, or it may prevent erosion of the lining of the gastrointestinal tract, while alleviating unpleasant symptoms like heartburn. Depending on the region, ranitidine may be available over the counter or by prescription, it can come in different strengths, and it is available as a liquid, pill, or as an injectable or intravenous medicine.

Drugs like ranitidine belong to a group of special antihistamines called H2 receptor antagonists. Normally, H2 receptors in the gastrointestinal system are stimulated by the presence of histamine, which binds to them. When these receptors and histamine meet, the body produces additional stomach acid. Ranitidine and other drugs prevent these meetings, so that histamine can’t bind to the receptors and the signal to produce extra acid isn’t sent. This helps lower overall acid, addressing some of the above-mentioned conditions.

Since Zantac® is available over the counter in many locales, people may fail to pay attention to the strong warnings associated with this medicine. It should never be used in pregnancy and may cause risk to breastfeeding babies if the mother takes it. It is not advised for people with liver or kidney conditions. Those with any blood disorders called porphyrias are strongly cautioned to avoid this medicine. Patients are also advised that they obtain diagnosis before using ranitidine because the symptoms of things like acid reflux can be similar to symptoms of more serious illness like stomach cancer.

There are many medicines that may conflict with ranitidine. Among these are medicines that treat a diverse variety of disorders such as AIDS, blood conditions, sleep or anxiety disorders, cancer, peptic ulcers, and fungal infections. When patients talk to a doctor about taking Zantac® they should be certain to include a list of all medications taken and mention all drug allergies. This can reduce potential for negative interactions.

The principal side effects of ranitidine may vary in individual expression. Side effects that tend not to be a concern include slight nausea, constipation, diarrhea or dizziness. People should contact their physicians if they experience allergic reaction (though the medication is sometimes used to treat hives), difficulty breathing, jaundice, skin rashes or mental/emotion symptoms such as hallucinations, panic, or depression. These are rare but should be addressed immediately.

One warning exists for certain populations of people who use ranitidine. Anyone with a compromised immune system and people who are over 65 may be at increased risk for developing pneumonia from illnesses while they are taking Zantac®. Risk of the medication must be outweighed by the benefits in these groups, and respiratory illnesses should be followed carefully.

WiseGEEK is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Tricia Christensen
By Tricia Christensen , Writer
With a Literature degree from Sonoma State University and years of experience as a WiseGEEK contributor, Tricia Christensen is based in Northern California and brings a wealth of knowledge and passion to her writing. Her wide-ranging interests include reading, writing, medicine, art, film, history, politics, ethics, and religion, all of which she incorporates into her informative articles. Tricia is currently working on her first novel.

Discussion Comments

By AnswerMan — On Jan 20, 2015

@Inaventu- I've been taking Zantac for my acid reflux for years, and I've never encountered your friend's problem. My doctor did warn me to take only the minimal amount that would address the problem, and to respect the recommended time between doses. He said these medications were not intended to be used for permanent, long-term relief. I was supposed to help the process through diet changes and stress management exercises.

There are long periods of time now when I don't feel the need to take Zantac every day. I only take it now when I know I've eaten some trigger foods or I'm already experiencing the early signs of acid reflux. Maybe your friend should look into other kinds of GERD or acid reflux medications that work in a different way than Zantac.

By Inaventu — On Jan 19, 2015

I honestly don't know if this is a common side effect of Zantac, but I had a friend who took it for his acid reflux and it worked almost too well. Zantac and other drugs of its kind are supposed to suppress the production of stomach acids, but apparently it can go too far in the other direction. Again, I don't know if it's one of Zantac's side effects or if he took the drug exactly as prescribed.

Anyway, he developed a serious problem with his digestive system because his stomach stopped producing stomach acid altogether. He didn't even have enough acid in his stomach to digest healthy foods, let alone the heavy or spicy foods that triggered his acid reflux. He had to go off his medications for months and get medical attention for his lack of acid production.

Tricia Christensen

Tricia Christensen

Writer

With a Literature degree from Sonoma State University and years of experience as a WiseGEEK contributor, Tricia...
Read more
WiseGEEK, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGEEK, in your inbox

Our latest articles, guides, and more, delivered daily.