Phenindamine

Phenindamine is an antihistamine closely related to cyproheptadine used to treat symptoms of the common cold and allergies, such as sneezing, itching, rashes, and hives. Its efficacy against some symptoms of opioid withdrawal was researched in the 1950s and 1960s in a number of countries; William S. Burroughs' book Junky mentions this technique. It has the trade names of Nolahist and Thephorin.