Unable to identify the first three. You may consider taking them into a pharmacists. The last one appears to be:
Skelaxin
Generic Name: Metaxalone (me-TAX-a-lone)
Brand Name: Skelaxin
Skelaxin is used for:
Treating discomfort associated with acute painful muscle conditions along with rest, physical therapy, or other measures.
Skelaxin is a muscle relaxant. It works in the brain to help relax the muscles.