made me sick. I bought it yesterday along with Redlines energy drink. Along with 120m of clen I downed the redline and was flying for a few hours...then around 2 I had a shake. I wasn't sure if it was the clen + redline or the ON...I figured it was the clen...well today I am having the same effects ONLY after taking the whey... my symptoms: headache, lathargy(sp?), achy muscles, loss of appitite. it usually wears off after a few hours as it did last night and just wore off now.