https://rxchat.com/Discuss/RP-15-is-it-IR-or-ER-300977_s2.htm?utm_source=forums_posts&utm_medium=RSS&utm_campaign=RSS Is this medication immediate release or extended release? - Filed in Pain Relief en-us Copyright 2026 RxChat.com. All Rights Reserved. Wed, 23 Mar 2016 22:57:59 GMT 60 https://rxchat.com/images/mc_logo.png https://rxchat.com/Discuss/RP-15-is-it-IR-or-ER-300977_s2.htm?utm_source=forums_posts&utm_medium=RSS&utm_campaign=RSS https://rxchat.com/Discuss/RP-15-is-it-IR-or-ER-300977_s2.htm?utm_source=forums_posts&utm_medium=RSS&utm_campaign=RSS#r_482778 https://rxchat.com/Discuss/RP-15-is-it-IR-or-ER-300977_s2.htm?utm_source=forums_posts&utm_medium=RSS&utm_campaign=RSS#r_482778 Rhodes Pharmaceuticals lists these are being regular release tablets, so after swallowing them, it takes about 15 to 20 minutes for them to start working. <br/> <br/> The FDA classifies this medication as a narcotic <a href="https://rxchat.com/Categories/Pain-Relief/" target="_blank">analgesic</a>, so it has the potential to be habit forming and may cause side effects, such as <a href="https://rxchat.com/Categories/Nausea-Vomiting/" target="_blank">nausea</a>, dizziness, drowsiness, dry mouth and <a href="https://rxchat.com/Categories/Laxative/" target="_blank">constipation</a>. <br/> <br/> Is there anything else I can help with? Wed, 23 Mar 2016 22:57:59 GMT