Stimulant use in start-ups

Just wondering, any startups here that actively use substances other than caffeine to boost productivity?

From time to time the ritalin/adderall threads appear here on HN, but afaik not a single one has talked about using these substances in a team.

Highly motivated people cramped together on small room can already be killer-productive; highly motivated people on speed must be kind of scary.

Throwaway accounts highly encouraged in case of illegal substance (ab-)use ;-)

Disclaimer: Stimulant abuse is bad. Don't do it.