I've been wondering for about a year whether something is considered SI or substance abuse. I decided to post this now instead of sooner because I didn't want to trigger myself too much, but I haven't SI'd (or done what my question is about) in a little over 2 months and think I can post this now and not trigger myself too badly.
....and if I'm wrong, well I guess I'll be in support chat later lol....

So, back to the main question. I would sometimes take about 10-12 benadryl, basically enough to make me feel...weird (not feel good, but it was a better feeling than the depression that led me to do this) and hallucinate. When I did this, especially the first time(s), it was to escape. The first time I honestly didn't care if it killed me. I wasn't trying to overdose as an SI method. Technically I was overdosing, but that wasn't the specific intention. I wanted an escape, to get high if I could.

So my question is: is this considered SI, substance abuse, both, or neither?
Thanks for any replies