from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An alkaloid, C21H26N2O3, that is derived from the bark of a tree, Pausinystalia johimbe, and is an alpha-blocker drug used in the form of its hydrochloride as a mydriatic, a treatment for erectile dysfunction, and formerly as an aphrodisiac.

from The Century Dictionary.

  • noun A colorless dextrorotatory alkaloid, C23A32O4N2, found, together with yohimbenine, in the bark and leaves of the yohimbé or yumbehoa-tree, belonging to the Rubiaceæ. It crystallizes in needles and melts at 234° C.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry A tryptamine alkaloid, the active chemical constituent of the medicinal herb Pausinystalia yohimbe: a stimulant and supposed aphrodisiac.


from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin yohimbe, former specific epithet (of Cameroonian Bantu origin; akin to Douala djombe, the tree from which yohimbine is derived) + –ine.]


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  • Yohimbe contains yohimbine, which is the alkaloid the FDA has allowed for treatment of erectile dysfunction.

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  • A weaker form of yohimbine called yohimbe is sold over the counter, and may not work as well.

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  • A chemical derived from yohimbe, yohimbine, is an FDA-approved drug for impotence; it is available by prescription only.

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  • The problem is, yohimbine is not safe for everyone.

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  • The over-the-counter yohimbe products do not cause such serious side effects, but may not be as effective as yohimbine.

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  • Similar to Viagra, the hot new prescription drug, yohimbine also increases blood flow to the penis.

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  • However, yohimbine is potentially toxic to the liver and can cause a sudden decline in blood pressure.

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