Pill imprint 5658 DAN has been identified as Cyclobenzaprine hydrochloride 10 mg.
Cyclobenzaprine is used in the treatment of muscle spasm; sciatica; migraine; fibromyalgia; temporomandibular joint disorder (and more), and belongs to the drug class skeletal muscle relaxants. There is no proven risk in humans during pregnancy.
http://images.ddccdn.com/images/pills/mtm/Cyclobenzaprine%2010%20mg-WAT.jpg
Cyclobenzaprine 10 mg is not subject to the Controlled Substances Act.
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