Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Coca leaves (Erythroxylum coca) have a long history of traditional use among indigenous peoples of the Andes for a variety of ailments, including headache and fatigue. Historically, coca leaves were chewed or brewed into teas to relieve symptoms such as headache, likely due to their mild stimulant and analgesic properties. The alkaloids present in coca leaves, most notably cocaine (in much lower concentrations than in illicit cocaine products), can produce local anesthetic effects and may contribute to the temporary relief of tension-type headache symptoms. However, while these traditional practices are well documented in ethnobotanical literature, scientific studies specifically investigating coca leaves for the treatment of tension headaches are lacking. Most modern research focuses on the pharmacology of purified cocaine rather than the traditional use of whole coca leaves. Consequently, the evidence for coca's effectiveness in treating tension headaches comes primarily from traditional use and anecdotal reports, rather than rigorous clinical trials. Safety concerns and legal restrictions also limit contemporary research. Therefore, while coca has a traditional basis for use in headache relief, scientific validation is minimal, warranting a modest evidence rating.

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