Can I take Re-Lyte Pre-Workout if I'm pregnant or nursing?

We don't recommend it because of the caffeine content.

We don’t recommend taking Re-Lyte Pre while you’re pregnant or nursing because of the caffeine content. While pregnant and nursing women can safely consume some caffeine, Re-Lyte Pre contains 150 mg per serving (quite a bit more than a cup of coffee) and the American Pregnancy Association recommends avoiding caffeine as much as possible while pregnant or nursing.