Because of
the
health risks associated with smoking, smoked marijuana should
generally not be recommended for long-term medical use. Nonetheless, for certain
patients, such as the terminally ill or those with debilitating symptoms, the long-term risks are not of great concern. Further, despite the legal, social, and health problems associated with smoking marijuana, it is widely used by certain patient groups.
Recommendation 5: Clinical trials of marijuana use for medical purposes
should be conducted under the following limited circumstances: trials
should
involve only short-term marijuana use (less than six months), should be
conducted in patients with conditions for which there is reasonable
expectation of
efficacy, should be approved by institutional review boards,
and
should collect data about efficacy.
The goal of clinical
trials of smoked marijuana would not be to develop marijuana as a
licensed drug but rather to serve as a first step toward the possible development of nonsmoked rapid-onset cannabinoid delivery systems. However, it will likely be many years before a safe and effective cannabinoid delivery system, such as an inhaler, is
available for patients. In the meantime there are patients with debilitating symptoms for
whom smoked marijuana might provide relief. The use of smoked marijuana for those patients should weigh both the expected efficacy of marijuana and ethical issues in
patient care, including providing information about the known and suspected risks of
smoked marijuana use.
Recommendation 6: Short-term use of smoked marijuana (less than six
months) for patients with debilitating symptoms (such as intractable pain or
vomiting) must meet the following conditions:
o failure of all
approved medications to provide relief has been documented,
o the symptoms can reasonably be expected to be relieved by rapid- onset cannabinoid drugs,
o such treatment is administered under medical supervision in
a manner that allows for assessment of treatment effectiveness, and
o involves an oversight strategy comparable to an institutional review
board process that could provide guidance within 24 hours of
a
submission by a physician to provide marijuana to a patient for a specified use.
Until a nonsmoked rapid-onset cannabinoid drug delivery system becomes available, we acknowledge that there is no clear alternative for people suffering from chronic
conditions that
might be relieved by smoking marijuana, such as pain or AIDS wasting. One possible approach is to treat
patients as n-of-1 clinical trials (single-patient trials), in which patients are fully informed of their status
as
experimental subjects using a harmful drug delivery system and in which their condition is closely monitored and documented
under medical supervision, thereby increasing the knowledge base of the risks and
benefits of marijuana use under such conditions.
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