Originally posted by The Young Geezer:get about 10-30% of the methylphenidate on a regular novartis 10mg ritalin pill, whilst
If I remember correctly a trusted source told me that methylphenidate absorption drastically changes from one method to the other, orally you snorted you get anywhere from 15%-60%, but there are many variables and each person reacts differently, also ritalin tolerance develops faster when done nasally, and as you may know the effects quite difeer from one another (snorted vs oral), and the comedowns are also uncomparable.As I said, it depends on the drug, this being an example.. now the tollerance thing... I'd have to look into that as tollerance isnt based on the method of administration but the effects of the drug - hell; snort, eat, bang or smoke an opioid such as oxycodone or morphine for 2 weeks then quit and suddenly it doesnt matter ..
//p