Protein shakes is helpful for human health. But I want to know that is there any side effect or not.

Protein shakes should be taken in moderation and along with an exercise routine if you want to build muscle. Any warnings about taking these shakes would appear on the container.

Tick

No. There are no side effects. You can get more information on this site-http://www.energyfirst.com/

The side effects are listed on the container as Tick said. Protein shakes, when taken without exercise, is unhealthy and will most likely cause weight gain.