Started taking the mentioned product after results came back that my cholesterol was high. After a week of taking it my lower back started to hurt. I thought it was my mattress so I changed it, two weeks later back still hurts. I cycle a good bit and just purchased a new bike at about the same time I started taking the supplements. Started to ride my old bike that I've ridden for 5 years with no prior back issues, but my back still hurt. So I started doing research on the ingredients in red yeast rice supplements. I found out that the natural ingredient in this supplement is has the same make up as the generic ingredient in the statin drugs that are prescribed for lowering cholesterol. One of the side effects is Back pain. By chance I spoke to my neighbor who told me he stop taking a statin his doctor perscribed because he was having the side effect of the back pains. It's been a week since I've stop taking the supplements and my Back pain is almost completely gone. Just wanted to share my story because this Back pain mystery has caused me spend money on a new mattress $1800 , one Cortizone shot $ 134.00 and a lot of Ibuprofen