Info Ranitidine. Ranitidine. Ranitidine is used for treating certain conditions that cause your body to make too much stomach acid (e.g., Zollinger-Ellison syndrome)..

Ranitidine is used for treating certain conditions that cause your body to make too much stomach acid (e.g., Zollinger-Ellison syndrome). It is also used to treat ulcers of the small intestine that have not responded to other treatment.

Use Ranitidine as directed by your doctor.

• Take Ranitidine by mouth with or without food.

Ranitidine is an H2-receptor blocker. It works by blocking the action of histamine in the stomach. This reduces the amount of acid the stomach makes. Reducing stomach acid helps to reduce heartburn, to heal irritation of the esophagus, and to heal ulcers of the stomach or intestines.

If you miss a dose of Ranitidine and are using it regularly, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Store Ranitidine between 68 and 77 degrees F (20 and 25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Ranitidine out of the reach of children and away from pets.

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.

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.