Lansoprazole can cause kidney problems. Tell your doctor if you are urinating less than usual, or if you have blood in your urine.
This medicine can cause diarrhea, which may be a sign of a new infection. Call your doctor if you have diarrhea that is watery or has blood in it.
Lansoprazole may cause new or worsening symptoms of lupus. Tell your doctor if you have joint pain and a skin rash on your cheeks or arms that worsens in sunlight.
You may be more likely to have a broken bone while taking this medicine long term or more than once per day.
If you also take sucralfate (Carafate), avoid taking it at the same time you take this medicine. Sucralfate can make it harder for your body to absorb lansoprazole. Wait at least 30 minutes after taking this medicine before you take sucralfate.
Before taking this medicine
You should not use lansoprazole if you are allergic to it, or if you take any medicine that contains rilpivirine (Edurant, Complera, Odefsey).
Heartburn can mimic early symptoms of a heart attack. Get emergency medical help if you have chest pain that spreads to your jaw or shoulder and you feel anxious or light-headed.
Tell your doctor if you have ever had:
liver disease;
lupus;
low levels of magnesium in your blood; or
osteoporosis or low bone mineral density (osteopenia).
Do not use over-the-counter lansoprazole (Prevacid OTC) without the advice of a doctor if you have:
trouble or pain with swallowing;
bloody or black stools; vomit that looks like blood or coffee grounds;
heartburn that has lasted for over 3 months;
frequent chest pain, heartburn with wheezing;
unexplained weight loss;
nausea or vomiting, stomach pain; or
an electrolyte imbalance or metabolic disorder.
Some forms of lansoprazole may contain phenylalanine. Tell your doctor if you have phenylketonuria (PKU).
You may be more likely to have a broken bone in your hip, wrist, or spine while taking a proton pump inhibitor long-term or more than once per day. Talk with your doctor about ways to keep your bones healthy.
Some conditions are treated with a combination of lansoprazole and antibiotics. Use all medications as directed by your doctor
Do not give lansoprazole to a child younger than 1 year old. Prevacid OTC is not approved for use by anyone younger than 18 years old.
Ask a doctor before using this medicine if you are pregnant or breastfeeding.
