Attorney General Eric Schneiderman is reportedly investigating whether Monster, Pepsi (it owns the AMP brand) and 5-Hour Energy Drink maker Living Essentials deceive customers about the ingredients, health benefits and health risks of their drinks.

FORBES: Monster Beverage: Global Sales, Potential Takeover Seem More Crucial Factors Than NY-State Probe

The industry, which includes Red Bull, 5-Hour Energy shots and PepsiCo's Amp, had been enjoying enormous growth before coming under intensifying scrutiny in the past year or so.

NPR: San Francisco City Attorney Sues Monster Beverage

Monster, along with AMP maker PepsiCo and Living Essentials LLC, maker of 5-hour Energy, received subpoenas in July from New York State Attorney General Eric T.

WSJ: Investors Get Jittery Over Monster