Before taking this medication, tell your doctor if you have
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kidney disease; or
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liver disease;
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trouble or pain swallowing food;
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vomiting with blood; or
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bloody or black stools.
You may not be able to take nizatidine, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.
Nizatidine is in the FDA pregnancy category C. This means that it is not known whether nizatidine will harm an unborn baby. Do not take this medication without first talking to your doctor if you are pregnant.
Nizatidine passes into breast milk. Do not take this medication without first talking to your doctor if you are breast-feeding a baby.
Take nizatidine exactly as directed by your doctor. If you do not understand these instructions, ask your pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass of water.
Do not stop taking nizatidine without first talking to your doctor. It may take up to 8 weeks for an ulcer to heal.
Store nizatidine at room temperature away from moisture and heat.
Take the missed dose as soon as you remember. However, if it is almost time for the next dose, skip the missed dose and take only the next regularly scheduled dose. Do not take a double dose of this medication unless otherwise directed by your doctor.
If you experience any of the following serious side effects, stop taking nizatidine and call your doctor immediately or seek emergency medical treatment:
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an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
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easy or unusual bruising or bleeding;
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bleeding gums;
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irregular heartbeat;
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fever and sore throat; or
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yellowing of the skin or eyes.
Other, less serious side effects may be more likely to occur. Continue to take nizatidine and talk to your doctor if you experience
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dizziness;
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headache; or
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diarrhea, nausea, or constipation.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
Do not stop taking nizatidine without first talking to your doctor. It may take up to 8 weeks for an ulcer to heal.
Do not take antacids within 1 hour of taking nizatidine. Antacids may decrease the effectiveness of nizatidine.
There are no restrictions on food, beverages, or activity while taking nizatidine, unless otherwise directed by your doctor.
Do not take antacids within 1 hour of taking nizatidine. Antacids may decrease the effectiveness of nizatidine.
Nizatidine may affect the actions of other medications by changing the acidity of the stomach. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines during treatment with nizatidine.
Seek emergency medical attention.
Symptoms of a nizatidine overdose include nausea, vomiting, diarrhea, increased saliva production, difficulty breathing, and a fast heartbeat.
