30 Aug 2009
Virtually nothing. SR stands for sustained release and ER stands for extended release. They are both formulated in such a way so that once swallowed, a controlled small amount of the drug, is released from the tablet into the body continually, over a period of time.
- Hyoscyamine Information for Consumers
- Hyoscyamine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Hyoscyamine (detailed)
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