Marijuana Myths, Claim No. 3
MARIJUANA IS A DRUG WITHOUT THERAPEUTIC VALUE
Proposals to make marijuana legally available as a medicine are countered with claims that safer, more effective drugs are available, including a synthetic version of delta-9-THC, marijuana's primary active ingredient.
For thousands of years, throughout the world, people have used marijuana to treat a variety of medical conditions. 10
Today, in the United States, such use is prohibited. Although 36 states have passed legislation to allow marijuana's use as a medicine, federal law preempts their making marijuana legally available to patients.
A number of studies have shown that marijuana is effective in reducing nausea and vomiting, 11 lowering intraocular pressure associated with glaucoma, 12 and decreasing muscle spasm and spasticity. 13 Today, many people use marijuana for these and other medical purposes, despite its illegal status. 14
People undergoing cancer chemotherapy have found smoked marijuana to be an effective anti-nauseant - often more effective than available pharmaceutical medications. 15 Indeed, 44 % of oncologists responding to a questionnaire said they had recommended marijuana to their cancer patients; others said they would recommend it if it were legal. 16In 1986, a synthetic delta-9-THC capsule (Marinol) was marketed in the United States and labeled for use as an anti-emetic. Despite some utility, this product has serious drawbacks' including its cost. For example, a patient taking three five-milligram capsules a day would spend over $5,000 to use Marinol for one year. In comparison to the natural, smokeable product Marinol also has some pharmacological shortcomings. 17
Marijuana is also smoked by thousands of AIDS patients to treat the nausea and vomiting associated with both the disease and AZT drug therapy. Because it stimulates appetite, marijuana also counters HIV-related "wasting," allowing AIDS patients to gain weight and prolong their lives.
Because THC delivered in oral capsules enters the bloodstream slowly, it yields lower scrum concentrations per dose.In short, the smoking of crude marijuana is more efficient in delivering THC and, in some cases, it may be more effective.
Oral THC circulates in the body longer at effective concentrations, and more of it is metabolized to an active compound; thus, it more frequently yields unpleasant psychoactive effects.
In patients suffering from nausea, the swallowing of capsules may itself provoke vomiting.
The continuing illegality of medical marijuana is based more on political than scientific considerations. Although during the 1970s the government supported exploration into marijuana's therapeutic potential, 18 its role has become one of blocking new research l9 and opposing any change in marijuana's legal status. 20
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