Benadryl recreational use

I’m planning on doing some Benadryl I’m Lwk scared of one of two things happening,one is dying and two is doing some dumb ass shit and my parents finding out I did it,I have 3 packs 2 in each pack each pill has 25 mg most adults from What I’ve seen using it recreationally start on a dose of about 200 but end up using 300-400 because it doesn’t really work,The only difference is I’m 15 and only way about 96 pounds which is already small for a 15 year old but even if I was normal weight I’d have to take less so I have no idea what a good dosage would be,I could definitely buy a bottle At CVS though because it’s generally given to those under 18 unless it’s a big issue in the surrounding area and from what I know it is not in my area