Current Ohio law (as of December 20, 2016)
A person who knowingly causes another person to commit suicide by providing the physical means or participating in a physical act by which a person commits or attempts to commit suicide is guilty of a felony in the third degree.  [Sec. 3705.04 (A)]

Governor Kasich Signs Bill Making Assisted Suicide a Felony
(WMFD — December 20, 2016)
Governor Kasich signed House Bill 470, making assisted suicide a third degree felony in Ohio, punishable by up to five years in prison.  The bill strengthens Ohio’s protections against assisted suicide,  which previously only permitted a court to issue an injunction against anyone helping people to kill themselves.

Proposed legislation

Text of SB 165 regarding Medical Orders for Life-Sustaining Treatment (MOLST)
Analysis of SB 165
Status of SB 165 (AB 131) as of November 21, 2016

Proponents Talking Points & Responses to Talking Points Regarding SB 165

In various states, MOLST is known by other acronyms (POLST, POST, MOST, etc)

For more information on such forms see:  POLST