![](http://www.alamy.com/thumbs/6/80F2F4B6-8BCC-4CA2-BEB3-03784FD82455/P7T35W.jpg)
Papaverine opium alkaloid molecule. Used as antispasmodic drug. Skeletal formula.
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Photo credit: © molekuul.be / Alamy / Afripics
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Keywords: alkaloid, antispasmodic, atomic, atoms, chemical, chemistry, composition, compound, drawing, drug, dysfunction, erectile, flat, formula, icon, ischemia, line, migraine, molecular, molecule, muscle, opium, papaver, papaverin, papaverine, pde10a, phosphodiesterase, poppy, relaxant, skeletal, smooth, spasm, spasmolytic, structure, vasospasm