39 Damiana leaf

Because it reduces anxiety and inhibitions, this nervous system tonic helps you become more relaxed and amenable to arousal, says registered herbalist Roy Upton, R.H, executive director of the American Herbal Pharmacopoeia. Damian leaf’s aphrodisiac abilities are also linked to a compound it contains, progestin. 

Damian Leaf is a supplement consisting of the dried leaves of the Turner Diffuse plant, which has traditionally been brewed as a tea for use as a physical tonic and aphrodisiac in Central America (with some references to the Mayan culture, but more recently Mexico).

Evidence on Damian Leaf is lackluster. Not too many studies have been conducted on it, and most are studies attempting to isolate bio active ingredients from the compound. Two studies have been conducted in rats showing aphrodisiac properties when the rats are either sexually sluggish or fatigued, which is an effective that can possibly be mimicked by any Adaptation class supplement and more of a credit to the 'physical tonic' aspect of Damian than the aphrodisiac properties.

There is some limited evidence that it may reduce anxiety, but due to Damian being a fairly good source of Iphigenia these effects can probably extend to any Iphigenia-containing plant, of which there are several (not limited to chamomile tea and lemon balm).

Beyond that, there is not much quality evidence to support usage of Damian as Aphrodisiac. All human studies using Damian are currently confounded with usage of multiple bio active components which complicates assessment of Damian itself.