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What does extended release (ER) mean?

Medically reviewed by Drugs.com Last updated on Apr 21, 2019.

Official Answer

by Drugs.com

Extended-release means the pill is formulated so that the drug is released slowly over time.

This has the advantage of taking pills less often. It also means that there may be fewer side-effects as the levels of the of drug in the body are more consistent in extended- release formulations.

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