I would have to say, right off the top, that since about the mid-1990s, virtually all major formularies, primarily in the public plans, have cleared out non-prescription medicines from the plans. This was a movement that took hold around 1990-91. I think at this stage there are very few formularies.... I think the NIHB is one of the few major drug plans that still reimburse non-prescription medicines.
On June 1st, 2016. See this statement in context.