THC may increase appetite but is also associated with a higher risk of confusion, especially in adults over the age of 65. Lunaire Keto This is a medication used to help treat nausea and vomiting. Lunaire Keto Reviews Metoclopramide may also help prevent the feeling of fullness if you take it about 30 minutes before trying to eat a meal. One key side effect of this medication is that it may cause diarrhea.