What Are the Side Effects of Drinking Ensure?

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Drinking Ensure Plus formula is associated with nausea, constipation, diarrhea, pulse fluctuations, excessive fatigue, nervousness and confusion, frailty, dry mouth, seizures, mood fluctuations, muscle cramps, frequent urination, breathing difficulties, vomiting, thirst and unwanted weight loss, according to Drugs.com. For patients taking medications, the components in Ensure could interact with the drugs, weakening or strengthening the effects of the prescriptions.

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