A ranitidine syrup that expired 1.5 months ago is unlikely to cause serious harm, especially if it was stored properly. Expired medications may lose their effectiveness, but they rarely become toxic immediately after the expiry date.
Since your child has only taken it once, serious side effects are unlikely. However, you can monitor her for symptoms like unusual drowsiness, irritability, diarrhea, or vomiting. If any of these occur or if you notice anything unusual, seek medical help as soon as possible.
Next Steps
Keep your child well hydrated.
• Do not give any more of the expired syrup.
• If your child seems unwell or develops any new symptoms, visit a nearby hospital or pediatrician in the morning or immediately if urgent.
• Save the syrup bottle in case the doctor needs to check it.
Health Tips
(Optional):
In future, always double-check expiry dates before giving any medication. Store medicines out of children’s reach and keep a basic emergency contact list handy for such situations.