A small sample pool of consumers from PatientsLikeMe reports that Ensure Plus may cause constipation or diarrhea. If this site's figures are representative, then these side effects are mild to moderate when experienced. Their incidence is minimal.
Ensure Plus is a nutritional shake with a specific amount of calories to promote healthy weight gain and weight maintenance. The shakes come in many different flavors, such as butter pecan, dark chocolate, strawberry and vanilla.
Ensure says that the shakes are 350 calories per 8-ounce bottle, and 100 of those calories are from fat. Ensure Plus also contains 24 vitamins and minerals, including calcium, iron, biotin, riboflavin and magnesium. Ensure Plus is a gluten-free drink.