how do slow release medicines like the contraceptive implant work?

Question

It’s the slow release bit I’m confused by-what stops it all going into your system at once?

In: Biology

Answer 1

There are Seveal Methods to achive this. In Generel your pill/ implant doesn’t degrade or degrade slow, so the Molecule has to diffuse slowly out of the drug. The Molecul could also be very unsoluable.
But the exact mechanism depends on the exact drug.