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Yohimbine

Yohimbine

Best for

More reliable erections

Likely strong benefit 1 meta-analysis, n=1k #1 of 8 studied

Yohimbine likely provides a strong benefit for erection reliability in adults with erectile dysfunction, while evidence across other outcomes is less convincing and cardiovascular or anxiety-related risks warrant clinical caution.

Median effective dose, most-studied outcomes

Full protocol, 1 outcomes

Risk, worst reported severity

  • seizure severe
  • poisoning severe
  • clonidine major
  • antidepressants major
All 15 events and interactions

What yohimbine actually does

Outcome Effect Evidence Dose Time Rank
Strong benefits 1
More reliable erections Likely strong benefit Erectile function shapes comfort, confidence, and intimacy during sex.
large 		1 meta-analysis 1 papers · n=1.0k — — #1 /8
Worth watching 1
Feel fuller and curb cravings Promising early signal Appetite control can help eating feel more manageable when hunger or cravings get in the way.
moderate 		1 RCT 1 papers · n=30 16.2 mg 1 wk #6 /44

Effect tiers come from native-unit MCID where available, Cohen's d otherwise.

Protocol

Dose, timing & forms

How much

There is no broad, low-risk consumer dose range that the evidence establishes across yohimbine's popular uses. The reviewed appetite protocol used 16.2 mg orally for one week, but that short, early signal does not justify routine appetite-control use. For erection firmness, clinical trials support the compound itself, yet the evidence does not make self-directed dose escalation a good idea given yohimbine's narrow margin between noticeable effects and unpleasant stimulant-like reactions.12

When and how long

Take yohimbine only on a consistent schedule if a qualified clinician has advised its use, rather than treating it like an occasional pre-workout stimulant. Avoid experimenting before demanding exercise, driving, stressful situations, or bedtime, because increased sympathetic activity can bring palpitations, shakiness, and anxiety.32

Forms & standardisation

The better-known clinical literature evaluates measured yohimbine, often yohimbine hydrochloride, rather than loosely standardized yohimbe bark. A label that only says "yohimbe bark" does not tell you how much active yohimbine it contains, so it cannot reliably match a clinical protocol.12

Studied range, by outcome

Outcome Studied range Median effective Duration Evidence
Stay fuller between meals 16.2 mg — 1 wk 1 paper

Adverse events and drug interactions

Safety events

seizure severe
poisoning severe
neurotoxicity severe
myocardial injury severe
palpitations
anxiety/tremulousness
hypertension
tachycardia

Drug interactions

clonidine major increases toxicity
antidepressants major increases concentration
other major increases concentration
fluoxetine major increases concentration
venlafaxine major increases toxicity
other moderate additive
atenolol moderate decreases effect
Buy well

Recommended Yohimbine products

Real products that dose Yohimbine where the research does, in a clean formulation, from brands we've audited. We only list ones we'd stand behind.

Chosen for adequate Yohimbine dosing vs. the studied range, a clean formulation (grade A–C), and independent brand-quality audits. Not sponsored.

In context

What this is and how it works

  • Across 1 study (n=1,000), yohimbine improved erection-related outcomes; no MCID threshold was reported.1
  • The reviewed evidence spans 16 papers and 33 outcomes, with erectile function providing the strongest support.
  • Yohimbine can increase sympathetic nervous activity, making cardiovascular symptoms and anxiety important safety concerns.23

Yohimbine is a plant alkaloid originally isolated from the bark of the yohimbe tree. Supplements sold as yohimbe bark are not interchangeable with measured yohimbine hydrochloride, because the bark's active-compound content varies widely.2

Yohimbine blocks alpha-2 adrenergic receptors, receptors that normally act as a brake on norepinephrine release. Think of it as lifting the brake on your body's alert system: it can alter genital blood-flow signaling, but it also raises the odds of feeling wired, anxious, or aware of your heartbeat.32

Bottom line

Yohimbine is most defensible for adults discussing erection firmness with a clinician, not for chasing fat loss, appetite suppression, or a stronger workout buzz. Skip it if you have heart-related symptoms, anxiety sensitivity, seizure risk, or use interacting medicines, including several antidepressants and clonidine.12

Co-studied with

  • Drug:Hydrocortisone3 shared · d=0.41
Frequently asked

Common questions

Does yohimbine work for erection firmness?

A review of randomized trials found that yohimbine improved erectile function for some men, although the trials were relatively small and older. It has substantially better support for this use than for fat loss or workout energy.1

Is yohimbine the same as yohimbe bark?

No. Yohimbine is a specific active chemical, while yohimbe bark products can vary widely in yohimbine content. That variability makes bark products especially hard to dose predictably.2

Why does yohimbine make some people feel anxious or shaky?

Yohimbine lifts part of the body's norepinephrine brake, increasing sympathetic nervous system activity. That same alerting effect can feel like jitters, a pounding heartbeat, or anxiety.3

Can yohimbine suppress appetite?

The appetite signal comes from very limited, short-term research. It is not strong enough to make yohimbine a sensible everyday appetite-control supplement, especially given its safety profile.2

Sources

Sources

  1. 1. Yohimbine for erectile dysfunction: a systematic review and meta-analysis of randomized clinical trials (1998) ↑
  2. 2. Yohimbe
  3. 3. Yohimbine increases sympathetic nervous activity in humans (1985) ↑

Generated August 27, 2026

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