1 doctor weighed in:

Can any doc tell me what's the difference between sr release and ir release tablets?

1 doctor weighed in
Dr. Charles Turck
Pharmacology

In brief: Rate of release

These abbreviations are referring to how fast the drug is released into the body.
IR stands for immediate release, and SR sustained release. IR medications are made for the drug to be released and begin working quickly after taking it. SR medications release the drug over a longer period of time. SR is usually taken once a day, whereas IR is usually taken multiple times a day.

In brief: Rate of release

These abbreviations are referring to how fast the drug is released into the body.
IR stands for immediate release, and SR sustained release. IR medications are made for the drug to be released and begin working quickly after taking it. SR medications release the drug over a longer period of time. SR is usually taken once a day, whereas IR is usually taken multiple times a day.
Thank