Zantac Side Effects
Generic name: ranitidine
Medically reviewed by Drugs.com. Last updated on Apr 2, 2020.
Note: This document contains side effect information about ranitidine. Some of the dosage forms listed on this page may not apply to the brand name Zantac.
For the Consumer
Applies to ranitidine: oral solution, oral tablets and tablets for, oral tablets effervescent for solution, parenteral injection, parenteral injection for iv infusion only
ISSUE: The FDA announced it is requesting manufacturers to withdraw all prescription and over-the-counter (OTC) ranitidine drugs from the market immediately.
This is the latest step in an ongoing investigation of a contaminant known as N-Nitrosodimethylamine (NDMA) in ranitidine medications (commonly known by the brand name Zantac). NDMA is a probable human carcinogen (a substance that could cause cancer). FDA has determined that the impurity in some ranitidine products increases over time and when stored at higher than room temperatures may result in consumer exposure to unacceptable levels of this impurity. As a result of this immediate market withdrawal request, ranitidine products will not be available for new or existing prescriptions or OTC use in the U.S.
BACKGROUND: Ranitidine is a histamine-2 blocker, which decreases the amount of acid created by the stomach. Prescription ranitidine is approved for multiple indications, including treatment and prevention of ulcers of the stomach and intestines and treatment of gastroesophageal reflux disease.
- Consumers: The FDA is also advising consumers taking OTC ranitidine to stop taking any tablets or liquid they currently have, dispose of them properly and not buy more; for those who wish to continue treating their condition, they should consider using other approved OTC products.
- Patients: Patients taking prescription ranitidine should speak with their health care professional about other treatment options before stopping the medicine, as there are multiple drugs approved for the same or similar uses as ranitidine that do not carry the same risks from NDMA. To date, the FDA's testing has not found NDMA in famotidine (Pepcid), cimetidine (Tagamet), esomeprazole (Nexium), lansoprazole (Prevacid) or omeprazole (Prilosec).
- Consumers and Patients: In light of the current COVID-19 pandemic, the FDA recommends patients and consumers not take their medicines to a drug take-back location but follow the FDA's recommended steps, available at: [Web], which include ways to safely dispose of these medications at home.
Side effects include:
Oral or parenteral therapy: Headache, sometimes severe.
IM therapy: Transient pain at injection site.
IV therapy: Transient local burning or itching.
For Healthcare Professionals
Applies to ranitidine: compounding powder, injectable solution, intravenous solution, oral capsule, oral granule effervescent, oral syrup, oral tablet, oral tablet effervescent
The most commonly reported side effect for IM administration was injection site pain, and the most commonly reported side effects with IV administration were localized pain and burning.[Ref]
Uncommon (0.1% to 1%): Abdominal discomfort/pain, constipation, nausea, vomiting
Bradycardia, atrioventricular block, tachycardia, and asystole have occurred in H2 receptor antagonists.[Ref]
Frequency not reported: Loss of libido[Ref]
Headache may be related to administration of treatment.[Ref]
Very rare (less than 0.01%): Headache/severe headache[Ref]
Very rare (less than 0.01%): Musculoskeletal symptoms, arthralgia, myalgia[Ref]
Rare (0.01% to 0.1%): Transient and reversible changes in liver function tests, increased ALT levels
Hepatitis with/without jaundice were usually reversible.
ALT levels increased to at least 2 times the pretreatment levels in patients receiving high IV doses for at least 5 days.[Ref]
Rare (0.01% to 0.1%): Fever, malaise
Frequency not reported: Death[Ref]
Rare (0.01% to 0.1%): Hypersensitivity reactions
Rare (0.01% to 0.1%): Elevation in serum creatinine
Very rare (less than 0.01%): Acute interstitial nephritis[Ref]
Elevation in serum creatinine was usually slight, and typically normalized with continued treatment.[Ref]
Rare (0.01% to 0.1%): Bronchospasm
Rare (0.01% to 0.1%): Reversible blurred vision[Ref]
Leukopenia, granulocytopenia, and thrombocytopenia were usually reversible.[Ref]
Very rare (less than 0.01%): Gynecomastia[Ref]
Frequency not reported: Injection site pain, transient localized burning or itching[Ref]
More about Zantac (ranitidine)
- During Pregnancy or Breastfeeding
- Dosage Information
- Patient Tips
- Drug Images
- Drug Interactions
- Compare Alternatives
- En Español
- 80 Reviews
- Generic Availability
- Drug class: H2 antagonists
- Drug Information
- Zantac (Ranitidine Injection)
- Zantac (Ranitidine Syrup)
- Zantac (Ranitidine Tablets and Capsules)
Related treatment guides
1. "Product Information. Zantac 75 (ranitidine)." Pfizer U.S. Pharmaceuticals, New York, NY.
2. Cerner Multum, Inc. "Australian Product Information." O 0
3. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
4. "Product Information. Zantac (ranitidine)." Glaxo Wellcome, Research Triangle Park, NC.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.