Yep, the first google result http://xn--80akpciegnlg.xn—p1ai/preparaty-dlya-kodirovaniya/disulfiram-implant/ (in Russian) says that you use an implant with 1-2g of the substance for up to 5-24 months and that “the minimum blood level of disulfiram is 20 ng/ml; ”. This paper https://www.ncbi.nlm.nih.gov/books/NBK64036/ says “Mild effects may occur at blood alcohol concentrations of 5 to 10 mg/100 mL.”
Yep, the first google result http://xn--80akpciegnlg.xn—p1ai/preparaty-dlya-kodirovaniya/disulfiram-implant/ (in Russian) says that you use an implant with 1-2g of the substance for up to 5-24 months and that “the minimum blood level of disulfiram is 20 ng/ml; ”. This paper https://www.ncbi.nlm.nih.gov/books/NBK64036/ says “Mild effects may occur at blood alcohol concentrations of 5 to 10 mg/100 mL.”