Zantac 75

Zantac 75 is used for:

Treating or preventing heartburn, acid indigestion, and sour stomach caused by certain foods and drinks. It may also be used for other conditions as determined by your doctor.

Zantac 75 is a histamine H

Do NOT use Zantac 75 if:

Contact your doctor or health care provider right away if any of these apply to you.

Before using Zantac 75 :

Some medical conditions may interact with Zantac 75 . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

Some MEDICINES MAY INTERACT with Zantac 75 . Tell your health care provider if you are taking any other medicines, especially any of the following:

This may not be a complete list of all interactions that may occur. Ask your health care provider if Zantac 75 may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use Zantac 75 :

Use Zantac 75 as directed by your doctor. Check the label on the medicine for exact dosing instructions.

Ask your health care provider any questions you may have about how to use Zantac 75 .

Important safety information:

Possible side effects of Zantac 75 :

All medicines may cause side effects, but many people have no, or minor, side effects.

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); change in the amount of urine produced; confusion; dark urine; depression; 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.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects at

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center (

Store Zantac 75 at room temperature, between 68 and 77 degrees (20 and 25 degrees C), in a tightly closed container. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Zantac 75 out of the reach of children and away from pets.

General information:

This information is a summary only. It does not contain all information about Zantac 75 . If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.

More Zantac 75 resources

Compare Zantac 75 with other medications for the treatment of:

Zantac 150

Generic Name: ranitidine (ra NI ti deen)

What is Zantac 150 (ranitidine)?

Ranitidine is in a group of drugs called histamine-2 blockers. Ranitidine works by reducing the amount of acid your stomach produces.

Ranitidine is used to treat and prevent ulcers in the stomach and intestines. It also treats conditions in which the stomach produces too much acid, such as Zollinger-Ellison syndrome. Ranitidine also treats gastroesophageal reflux disease (GERD) and other conditions in which acid backs up from the stomach into the esophagus, causing heartburn.

Ranitidine may also be used for other purposes not listed in this medication guide.

What is the most important information I should know about Zantac 150 (ranitidine)?

Before using this medication, tell your doctor if you are allergic to any drugs, or if you have kidney disease, liver disease, or porphyria.

Using ranitidine may increase your risk of developing pneumonia. Symptoms of pneumonia include chest pain, fever, feeling short of breath, and coughing up green or yellow mucus. Talk with your doctor about your specific risk of developing pneumonia.

Ranitidine granules and effervescent tablets must be dissolved in water before you take them.

Your doctor may recommend an antacid to help relieve pain. Carefully follow your doctor’s directions about the type of antacid to use, and when to use it. Avoid drinking alcohol. It can increase the risk of damage to your stomach. It may take up to 8 weeks of using this medicine before your ulcer heals. For best results, keep using the medication as directed. Talk with your doctor if your symptoms do not improve after 6 weeks of treatment.

What should I discuss with my healthcare provider before using Zantac 150 (ranitidine)?

Do not use this medication if you are allergic to ranitidine.

Before using ranitidine, tell your doctor if you are allergic to any drugs, or if you have:

porphyria.

If you have any of the conditions listed above, you may need a dose adjustment or special tests to safely take ranitidine.

The ranitidine effervescent tablet may contain phenylalanine. Talk to your doctor before using this form of ranitidine if you have phenylketonuria (PKU).

FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment. Ranitidine passes into breast milk. Do not take ranitidine without telling your doctor if you are breast-feeding a baby.

Using ranitidine may increase your risk of developing pneumonia. Symptoms of pneumonia include chest pain, fever, feeling short of breath, and coughing up green or yellow mucus. Talk with your doctor about your specific risk of developing pneumonia.

How should I take Zantac 150 (ranitidine)?

Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.

Your doctor may recommend an antacid to help relieve pain. Carefully follow your doctor’s directions about the type of antacid to use, and when to use it.

Do not crush, chew, or break the ranitidine effervescent tablet, and do not allow it to dissolve on your tongue. The 25-milligram effervescent tablet must be dissolved in at least 1 teaspoon of water before swallowing. The150-milligram effervescent tablet should be dissolved in 6 to 8 ounces of water.

Allow the tablet to dissolve completely in the water, and then drink the entire mixture. If you are giving this medicine to a child, you may draw the liquid mixture into a medicine dropper and empty the dropper into the child’s mouth.

Ranitidine granules should be mixed with 6 to 8 ounces of water before drinking.

Measure the liquid form of ranitidine with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.

It may take up to 8 weeks of using this medicine before your ulcer heals. For best results, keep using the medication as directed. Talk with your doctor if your symptoms do not improve after 6 weeks of treatment.

This medication can cause you to have unusual results with certain medical tests. Tell any doctor who treats you that you are using ranitidine.

Store ranitidine at room temperature away from moisture, heat, and light.

What happens if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include lack of coordination, feeling light-headed, or fainting.

What should I avoid while taking Zantac 150 (ranitidine)?

Avoid drinking alcohol. It can increase the risk of damage to your stomach.

Zantac 150 (ranitidine) side effects

Stop using ranitidine and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have any of these serious side effects:

chest pain, fever, feeling short of breath, coughing up green or yellow mucus;

easy bruising or bleeding, unusual weakness;

fast or slow heart rate;

problems with your vision;

fever, sore throat, and headache with a severe blistering, peeling, and red skin rash; or

nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Less serious side effects may include:

headache (may be severe);

drowsiness, dizziness;

sleep problems (insomnia);

decreased sex drive, impotence, or difficulty having an orgasm; or

swollen or tender breasts (in men);

nausea, vomiting, stomach pain; or

diarrhea or constipation.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect Zantac 150 (ranitidine)?

Before taking ranitidine, tell your doctor if you are taking triazolam (Halcion). You may not be able to use ranitidine, or you may need dosage adjustments or special tests during treatment.

There may be other drugs that can interact with ranitidine, or be affected by ranitidine. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.