Are there any precautions I should know about?

It is important to dissolve Biological Therapeutics Rejuvenate in juice or water and to ensure it does not come into contact with surfaces, skin or mucous membranes. It will dissolve natural fibers and could cause a stinging sensation on skin on mucous membranes. You may not wish to take Rejuvenate after 9:00 p.m., or before sleeping, due to its energizing properties.