One side has a "P" Other side has a "O-M" or "W-O" Small round pink pill ## My finding does not pose an exact match to your description, but represents the closest match I could find using the imprint "P O-M" (no results came up with O-W). The imprint P O-M is identified as "Ortho tri-cyclen lo inert". The active ingredients in this pill are ethinyl estradiol + norgestimate, which are used to treat birth control. NOTE: this pill is actually identified as being green; but it is important to know that the way a pill looks is entirely up to the whit and whim of the company making it, and therefore the color of the pill doesn't always match up with the finding. To view information about this drug, please click on the link below... If you have any ...