Do protein shakes and energy drinks have side effects.

They can: If your diet has too much protein & not enough carbohydrates, you may feel tired. You may also be missing essential other nutrients-vitamins & minerals & healthy fats. Energy drinks typically have a lot of sugar & caffeine & other stimulants that can make you anxious & jittery, & more fatigued when they wear off in a couple of hours. A balanced diet of healthy real food is a much better option.

Dr Pappas agreed

Protein shakes: Protein shakes are concentrated sources of protein, usually whey. We usually are not allergic. Concentrated protein ingestion can strain kidneys and can promote kidney stones. Drink a lot of fluid. Energy drinks contain caffeine or caffeine like substances as well as sugars. These are not healthy for us. Can make you jittery, nervous, angry, agitated, or have palpitations.