How much Re-Lyte Boost is too much?

Boost contains 120 mg of caffeine per serving, along with other ingredients that support healthy energy levels like B vitamins, electrolytes, ginseng root, maca root, Rhodiola rosea, and ashwagandha. 

As you’ve probably experienced before, an energy boost can go too far and send you into shaky-hand land (and that’s no fun). 

You'll want to be especially careful about exceeding 400 mg of caffeine per day (from Boost or other sources) because that’s when uncomfortable side effects (like insomnia, anxiety, irritability, jitters, stomach problems, etc.) start kicking in with a vengeance.

Article: How Much Caffeine is Too Much?