Drug Class and Mechanism of Action of Zantac
Zantac is an H2 receptor blocker. It acts by blocking the action of histamine in the stomach, which causes reduction of secretion of acid in the stomach. By reducing the stomach acid, Zantac helps to reduce heartburn, to heal irritation of the esophagus, and to heal ulcers of the stomach or intestines (peptic ulcer).
Therapeutic Uses of Zantac
Zantac is a very commonly used medicine. Zantac is used for treatment of certain conditions that cause your body to make too much stomach acid like Zollinger-Ellison syndrome. It is also used for treatment of ulcers (peptic ulcer) of the small intestine that have not responded to other treatment. It may also be used for other medical conditions as determined by your doctor.
Direction of use of Zantac
Use Zantac as per direction of your doctor or use it the following way:
- Zantac should be taken by mouth on empty stomach.
- Swallow the tablet as a whole without breaking, crushing or chewing it.
- Keep taking Zantac even if you feel well without missing any dose of it. Taking Zantac at the same time each day will help you to remember to take it and also it will give the best possible result.
If You Miss a Dose of Zantac
If you miss a dose of Zantac, you should take it as soon as you can remember it. If it is almost time for your next dose of Zantac, skip the missed dose and go back to your regular dosing schedule. Do not use 2 doses at a time.
How to Store Zantac
Zantac should be stored at temperature between 59 and 77 degrees F (15 and 25 degrees C). Store it away from heat, moisture, and light in a tightly closed dark color container. Do not store in the bathroom. Keep Zantac out of the reach of children and away from pets.
More Information About Zantac
Zantac is to be used only by the patient for whom it is prescribed. Do not share it with other people. Do not use it for other medical conditions other than the disease it is prescribed for. If you have any question about Zantac, ask your doctor.
Precautions to be Taken While Taking Zantac
Do not use Zantac if you are suffering from any of the following medical conditions and consult your doctor immediately:
- If you are allergic to any of the ingredients used in Zantac.
- If you have a history of a blood diseases like porphyria.
Important notes on Zantac:
- Do not drive or perform other possibly unsafe tasks, which need constant monitoring and attention until you know how you react to it.
- Zantac may interfere with certain lab tests, including urine for protein tests. You should inform your doctor and lab personnel that you are taking Ranitidine if you have to go for any lab test.
- Lab tests, including liver function test, should be performed while you use Zantac. These tests may be used to monitor your condition as well as to check for side effects. Keep all doctor and lab appointments while taking Zantac.
- Zantac should be used with extreme caution in children younger than 1 month old as the safety and effectiveness of Zantac in these children have not been confirmed.
- Pregnancy and breast-feeding: If you become pregnant, you should contact your doctor before you take Zantac. You should discuss the benefits and risks of using Zantac while you are pregnant. Zantac is found in breast milk. Do not breast-feed while taking Zantac.
Possible Adverse Effects of Zantac
- Common and mild side effects of Zantac are constipation, diarrhea, headache, nausea, stomach upset, vomiting etc. If any of these common and mild side effects become bothersome or persistent you should consult your doctor.
- Seek medical attention right away if you experience any of the severe side effects of Zantac. The severe side effects of Zantac are severe allergic reaction (the symptoms of severe allergic reaction are rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); confusion, hallucinations; dark urine; fast, slow, or irregular heartbeat; fever, chills, or sore throat (symptoms of infection); severe or persistent headache or stomach pain; unusual bruising or bleeding; yellowing of the eyes or skin (jaundice) etc.