There are loopholes in the US currently for drug advertisements. As an example, a very simplistic one so don't take it as legal gospel - while you cannot advertise Ketamine as a pharmaceutical on print or tv you can advertise "direct to consumer" on social media/web as long as your company doesn't specifically pack/distribute the drugs themselves.

I reckon NYT might be a little more tuned into this due to still being a news org with print still going and likely having more restrictions on their web ads due to this, but other platforms you could get away with that no problem as noted from various sources like https://www.vice.com/en/article/g5p38b/ketamine-therapy-inst... and https://www.nytimes.com/2023/03/01/opinion/ketamine-ads-depr...