What is a white football shaped pill with RI8D on one side and a cross on the other?

Pill imprint R180 has been identified as Tizanidine hydrochloride 4 mg.

Tizanidine is used in the treatment of muscle spasm; cluster headaches and belongs to the drug class skeletal muscle relaxants. Risk cannot be ruled out during pregnancy. Tizanidine 4 mg is not a controlled substance under the Controlled Substance Act (CSA).

pill image: https://www.drugs.com/imprints/r180-12553.html