THC relief pods. 10 pack. Rectal/vaginal administration of marijuana has many advantages. In addition to being a viable option for patients who can’t ingest or inhale cannabis, cannabis suppositories also begin to work quickly and last for a long time. Best of all, suppositories are efficient: up to 70 percent of the medicinal compounds in a suppository are bioavailable.Available in 50mg, 100mg and 200mg.