Dets virkning i opioid- vedligeholdelsesbehandling skyldes dets langsomme reversible forbindelse med µ- receptorerne, der over en længere periode kan minimere behovet for stoffer hos afhængige patienter.
Its activity in opioid maintenance treatment is attributed to its slowly reversible properties with the μ receptors, which over a prolonged period, might minimise the need of addicted patients for drugs.