# Omega-3 fish oil capsules: OTC vs. Rx

**URL:** <https://boards.straightdope.com/t/omega-3-fish-oil-capsules-otc-vs-rx/553656>\
**Category:** Factual Questions\
**Created:** [September 13, 2010, 9:24pm UTC](https://boards.straightdope.com/t/omega-3-fish-oil-capsules-otc-vs-rx/553656 "2010-09-13T21:24:59Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![DrAqua](https://avatars.discourse-cdn.com/v4/letter/d/b4bc9f/32.png) [@DrAqua](https://boards.straightdope.com/u/DrAqua)\
**Post date:** [June 9, 2013, 2:13pm UTC](https://boards.straightdope.com/t/omega-3-fish-oil-capsules-otc-vs-rx/553656/21 "2013-06-09T14:13:34Z")

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Many time-release prescriptions come in a shell that does not dissolve. Extended release metformin, procardia, etc are released from the capsule which will typically pass intact (but a little swollen) out the other end.

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