In mid-1967, tablets containing 20 mg (later 10 mg) of DOM were widely distributed in the Haight-Ashbury District of San Francisco under the name of STP.
I midten af 1967 blev tabletter indeholdende 20 mg (senere 10 mg) af DOM (2,5-Dimethoxy-4-methylamphetamine) bredt distribueret i Haight-Ashbury-bydelen i San Francisco under navnet STP.