I really dont have any concers about immediate use of slin...I was given some a long time ago and used it alone and had good gains...better than any ph cycle ive done. Id like to use it again along with test prop but my one and only concern is long term shut down of the pancreas. Ive always read that it could shut natty production down but the readings always sound like its just a thought, or an assumption...not a fact. I have yet to find anything about anyone becoming diabetic from using slin to build muscle. Are there any documented cases out there? Anyone know anyone that this happened to? Im not going to us it long term ( no more than 4 weeks eod)....and Id like to keep it that way, if you know what i mean.