You are actually incorrect, the generic version doesn't have Povidone K30. Brand name Subutex and Suboxone do.
Correct.
This info has been posted elsewhere but I thought I would post a side by side comparison of inactive ingredients of brand name subutex vs. the generic roxane pills.
Brand name Original Subutex:
Inactive Ingredients: lactose, mannitol, cornstarch, povidone K30, citric acid, sodium citrate and magnesium stearate
Generic (Roxane):
Inactive Ingredients: anhydrous citric acid, corn starch, crospovidone, lactose monohydrate, magnesium stearate, mannitol, povidone, and sodium citrate
So as you can see, both pills have corn starch. Many people have stated that the generics are talc based, but as you can see this is not the case, they are both corn starch based.
The main difference seems to be that the original Subutex contains povidone k30, while the generics contains crospovidone as well as povidone.
For those that shoot their subutex, it is important to note what Wiki has to say about crospovidone.
It is used as a binder in many pharmaceutical tablets[3]; it simply passes through the body when taken orally. However, autopsies have found that crospovidone does contribute to pulmonary vascular injury in substance abusers who have injected pharmaceutical tablets intended for oral consumption.[4
This should be a point of concern for those that shoot subutex, and have switched to the generics.
Crospovidone IS WATER SOLUBLE (which means that no amount of filtering will filter it out of your shot), and Crospovidone is an ingredient in the generics, but not the name brand formulation of subutex.
So with this in mind, if you shoot your subutex, I would strongly urge you to consider spending the extra money and sticking with the name brands, as they do not contain the crospovidone. I know that I will be sticking with the name brands. While they are more expensive, it would be pretty foolish to switch to a med which you KNOW contains a water soluble substance which has been shown to contribute to pulmonary injury. Just some food for though-DG