It all started when Brad Kaaya -- the Miami Hurricanes QB projected as a top pick in next year's draft -- questioned whether the supplements at SK were okay by NCAA PED testing standards.
Kaaya was obviously trying to make a point about the testing ... but even still, a rep from Smoothie King (800 stores nationwide) was quick to tell TMZ Sports the athletes have ZERO TO FEAR.
"Our proprietary Gladiator Protein, which is available in smoothies and in retail, is free from banned substances and perfectly safe for all athletes.