Skip to Content

Morphine IR - What does the IR stand for in Morphine Sulphate IR?

Answers (3)

27 Aug 2010

I believe the IR should stand for "instant" (or immediate) release.

CaptCastle 30 Aug 2010

Thank you for your answer. That's what I was thinking.

27 Aug 2010

Yeah the other posters right. If you see e.r,it's extended relief.

CaptCastle 30 Aug 2010

Thanks for the info...

7 Nov 2011

The first answer was correct:

IR = Instant release. Drug will take effect from 5-30 minutes after ingestion and it will stay effective for 2-6 hours.
ER/SR = Extended or Sustained Release. Drug will take effect from 15-60 minutes after ingestion and it will stay effective for anywhere from 4-12 hours from ingestion.

Breaking/cutting/crushing an IR tablet can make it take effect faster, but possibly shorten (slightly) how long it is effective.

One should NEVER break/cut/crush an SR tablet as they will get a MUCH higher dose than is on the label. It WILL take effect faster, however it will NOT last nearly as long.

Further Information

Search for questions

Still looking for answers? Try searching for what you seek or ask your own question.

Similar questions

Hello I am using your morphine sulphate info for an essay ... cont?

hello i am using your morphine sulphate info for an essay and i need to reference how do i do this please as there is no author and when was updated ...

1 answer 10 May 2010

What schedule is morphine sulphate?

1 answer 30 Jun 2010

What are the costs of morphine sulphate in the quantity of 90 capsules?

morphine sulphate 15mg

2 answers 15 Feb 2012