1 February 1999

A decade of caring for drug users

[Letter in Br J Gen Pract. 1999 Feb;49(439):146.]
Sir,

Martin et al�s report on treating drug dependent patients in general practice is heartening (October Journal).1 It is a shame that the authorities do not reward such innovative and successful interventions with appropriate payment, encouragement, and replication elsewhere. Oral supervised methadone is well established as an effective management for heroin addiction.

Although it was obviously successful in numerous cases, the research evidence for injected methadone is still rudimentary. Like heroin prescription, it should probably be reserved for patients who have failed at standard treatments such as oral methadone or supported detoxification.

After 14 years of prescribing and dispensing methadone in our general practice in Sydney, we have found that oral methadone suits up to 90% of heroin injectors who present for treatment. There should be no arbitrary limits on daily doses (we use up to 350 mg daily; mean = 85 mg). It is normal practice in most jurisdictions for at least two doses per week (up to 7 in new or unstable patients) to be consumed under supervision. The use of non-supervised methadone may be effective in certain cases but this has not been demonstrated generally in the research literature. It omits a fundamental safeguard for compulsive drug users and also increases the possibility of drug diversion.

Oral methadone �failures� should be candidates for studies of alternatives such as injected methadone, prescribed heroin, rapid detoxification, oral long-acting morphine, or other approaches. There is no reason for this to happen only in specialist units. A general practice with sufficient experience in dependency, as in this case, is perfectly capable of doing the same as, or even better than, existing dependency units.

Andrew Byrne



Reference



1. Martin E, Canavan A, Butler R. A decade of caring for drug users entirely within general practice. Br J Gen Pract 1998; 48: 1679-1682.