Do not use Ranitidine if:

• you are allergic to any ingredient in Ranitidine;
• you have a history of porphyria (a blood disease).

• Ranitidine may rarely cause drowsiness, dizziness, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use Ranitidine with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
• Ranitidine may interfere with certain lab tests, including urine protein tests. Be sure your doctor and lab personnel know you are taking Ranitidine.
• Lab tests, including liver function, may be performed while you use Ranitidine . These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments.
• Ranitidine should be used with extreme caution in children younger than 1 month old; safety and effectiveness in these children have not been confirmed.
• Pregnancy and breast-feeding: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Ranitidine while you are pregnant. Ranitidine is found in breast milk. Do not breast-feed while taking Ranitidine.

Check with your doctor if any of these most common side effects persist or become bothersome:

• constipation; diarrhea; headache; nausea; stomach upset.

• severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); confusion; dark urine; fast, slow, or irregular heartbeat; fever, chills, or sore throat; hallucinations; severe or persistent headache or stomach pain; unusual bruising or bleeding; yellowing of the eyes or skin.

If you have any questions about Ranitidine, please talk with your doctor, pharmacist, or other health care provider.
Ranitidine is to be used only by the patient for whom it is prescribed. Do not share it with other people.