Effects - Is swim a lightweight?

[WalkingMonstrosity]

Swim has done 40 mg of IR Adderall at once a few times. Swim felt great but of course there was always a shitty comedown. Never had any chest discomfort until the last time, the next day SWIM had rapid heart-beat and his chest felt tight (Smoking made this worse.) Although the following day after that Swim was back to normal and fine.

Swim's heard some say it's risky to exceed 30 mg in one dose, while swim's heard others claim to take 50-80 mg at once with no problems or complications. Swim wants to know how well it seems his body can tolerate adderall.

It should be noted that all the other times SWIM has done 40 mg (3 times), this didn't happen.