Lyric discussion by liruichen 

I think the addiction thread of interpretation is most probable. The outro and last four lines are kind of heartbreaking in my opinion. The bass slides in the background seem to heighten the sense of loss or losing that comes with someone taking them all (presumably pills) and doing it alone, or without the singer. This taker chose the form of their fall and did it without whoever it is that cared enough to sing this song, and it sounds like sad regret that he couldn't be there when it went down, also presumably to stop it from happening perhaps.

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