libido · Outcome
Sexual desire frequency. Driven mostly by sleep, stress, body composition, and (for men) testosterone. Pills are usually downstream of fixing those.
How to measure: Subjective 1-10 weekly. Frequency of desire episodes per week. Morning erections (men) as a vascular/hormonal proxy.
Three levers, one stack. Each works through a different mechanism. They compound.
Evidence pending
300-600 mg KSM-66 extract · Evening, with food
Evidence
Effect size
Corpus
None
Why: Mechanism is stress-axis modulation, not direct hormonal action. If chronic stress is suppressing your sex drive, ashwagandha may help. If it's not stress-driven, less likely to help.
See the Ashwagandha (KSM-66) pageMeaningful
2-4 sessions/week · Any time
Evidence
Effect size
Corpus
2 papers
0 small · 0 moderate · 2 large · 0 unclear
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Every pick has two signals. They answer different questions and we never bundle them into one number.
Effect size
How big is the change on libido, in the units that matter for this outcome.
Confidence
How sure are we the effect is real for libido, given the studies we have.
For every pick, the “papers” number is how many studies we've cataloged that test this entity for libido. “Favorable” means the study reported the direction you want.
The tier badge (S, A, B…) on the entity itself is its overall research confidence across all outcomes. It's the same letter wherever you see this entity on the site, not specific to libido.
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“Combined diet and exercise interventions increase International Index of Erectile Function-5 (IIEF-5) scores.”
Why: Most-replicated lifestyle intervention for libido. Effect compounds with sleep and weight stability. The supplement industry would prefer you forget this exists.