
In the first chapter he passed out and the doctor told him that he's kinda immune now because he took too much of it, that's where the plot kinda started
https://www.mangago.zone/read-manga/love_remedy_1/uu/to_chapter-1/pg-97

I just read back chapter 1 and now I'm reminded why he won't take suppressants anymore. Instead of taking meds, as suggested by the doctor, he needs to be physically intimate with an alpha regularly to stabilize his pheromones. I guess he just can't say it like that, like he's embarrassed to tell Taeha that he would prefer to do some foreplay or quickie bcs no suppressants will work anyway.
I don't get why this twink of an omega is refusing the suppressant that Taeha is offering him. Just bcs he will pass out? And so what if he indeed pass out? Maybe I missed the foreshadowing from the previous chapters (if there's any) but it looks like the author made the uke refuse the meds bcs they just want a mouth-to-mouth scene to be inserted in this chapter.
sorry I'm just not seeing a reasonable rationale behind that act/behavior (〜 ̄△ ̄)〜