It's a small round white pill with the letters "HR" imprinted on the one side the other side is blank we found it mixed in with a bottle of expired naproxen, just trying to figure out what it is, thanks to anyone who might know.
- Naproxen Information for Consumers
- Naproxen Information for Healthcare Professionals (includes dosage details)
- Side Effects of Naproxen (detailed)
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