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Zantac 25 EFFERdose Oral

Generic Name: RANITIDINE 25 MG EFFERVESCENT - ORAL
Pronounced: (ran-IT-uh-deen)

Zantac 25 EFFERdose Oral Side Effects

Drowsiness, dizziness, headache, abdominal discomfort, nausea, vomiting, diarrhea and constipation may occur. If any of these effects persist or worsen, notify the doctor or pharmacist promptly.

Remember that the doctor has prescribed this medication because he or she has judged that the benefit is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell the doctor immediately if any of these unlikely but serious side effects occur:

  • mental/mood changes (e.g., fussiness, nervousness, confusion, depression, hallucinations)
  • vision changes (e.g., blurred vision)


Tell the doctor immediately if any of these rare but very serious side effects occur:

  • easy bleeding/bruising
  • severe tiredness
  • fast/slow/irregular heartbeat
  • signs of infection (e.g., fever, persistent sore throat, cough)
  • severe stomach/abdominal pain
  • dark urine
  • yellowing eyes/skin


A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include:

  • rash
  • itching/swelling (especially of the face/tongue/throat)
  • severe dizziness
  • trouble breathing


This is not a complete list of possible side effects. If you notice other effects not listed above, contact the doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Zantac 25 EFFERdose Oral Precautions

Before using ranitidine, tell the doctor or pharmacist if your child is allergic to it; or to other H2 histamine blockers (e.g., cimetidine, famotidine); or if your child has any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if your child has certain medical conditions. Before using this medication, tell the doctor or pharmacist if your child has:

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