Posted by danf on March 2, 2001, at 6:57:26
In reply to Re: How do SR tablets differ from non SR tablets?, posted by danf on March 2, 2001, at 6:46:23
It is a physical process. some ( lots of med capsules )are made into tiny beads. beads are coated with different layers of a slow dissolving medically inert material.
there are several 'tricks' used. some are pH dependent, granule size, inert binder amounts, etc
most common method uses varying granule size & different coating thickness. so that some granules dissolve immediately, some in 1 hr, some in 2, etc.
dissolve time has to be played against gut transit time. over more than about 8-10 hrs & meds will be in the colon & have erratic absorption.
poster:danf
thread:55308
URL: http://www.dr-bob.org/babble/20010302/msgs/55317.html