Amnesia is a 70% sativa strain with genetic origins in Thailand. The best females from a Thai selection process were crossed with pollen from a superb Skunk male plant. The result was then further crossed with both C99 and Jack Herer male plants before the results were crossed again. It is one of the most popular sativa-dominant strains commercially available.
THC production has been measured at up to 20% with somewhat higher CBD than from pure Thai strains giving an that is effect is very cerebral and long-lasting.