Owsley Stanley had a product called Blue Cheer which was great. The following is from Wiki:
Blue Cheer is often credited as one of the very earliest pioneers of heavy metal and their version of "Summertime Blues" has been cited as the first heavy metal song.[8] According to Tim Hills in his book, The Many Lives of the Crystal Ballroom,[33] "Blue Cheer was the epitome of San Francisco psychedelia." Jim Morrison of The Doors characterized the group as "the single most powerful band I've ever seen"[34] and Eric Clapton defined them as "probably the originators of heavy metal".[35] Blue Cheer influenced such late 1970s bands as East-European psychedelic hardcore band Galloping Coroners.[36]
Blue Cheer was also widely recognized as the loudest band ever at the time when they emerged.[37][38][39][40][41] Billy Altman reported that at a 1968 concert the band was "So loud, in fact, that within just a few songs, much of the crowd in the front orchestra section was fleeing."[41]
"Blue Cheer" was the name of a variety of LSD made by chemist and Grateful Dead patron Owsley Stanley[42] and the band was probably named after that, although the name existed earlier, as the name of a laundry detergent[43] after which the LSD variety itself was named.