Lansoprazole, clarithromycin, and amoxicillin may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- stomach pain or cramps
- change in ability to taste food
Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:
- blistering or peeling skin
- swelling of the face, eyes, lips, tongue, arms, or legs
- difficulty breathing or swallowing
- sore throat, fever, chills, and other signs of infection
- watery or bloody diarrhea with or without stomach pain that occurs during your treatment or for up to 2 months afterward
Lansoprazole, amoxicillin, and clarithromycin may cause other side effects. Call your doctor if you have any unusual problems while you are taking these medications.
People who take proton pump inhibitors such as lansoprazole may be more likely to fracture their wrists, hips, or spine than people who do not take one of these medications. The risk is highest in people who take high doses of one of these medications or take them for 1 year or longer. The risk may also be higher in people who are 50 years of age or older. Talk to your doctor about the risk of taking lansoprazole.