Yohimbine and Atenolol: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 15, 2026 · Source data updated Jul 11, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Atenolol
Yohimbine
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
Atenolol (Tenormin) is a beta blocker that helps lower your blood pressure. Yohimbine is a supplement that can do the opposite. It causes your body to release more of a stress-type chemical (norepinephrine), which can raise blood pressure and speed up your heart. Because of this, yohimbine can work against your atenolol, so your blood pressure may not stay as well controlled.
This concern is based on how the drugs are expected to behave rather than large studies, but it makes sense pharmacologically. The good news is your care team can manage this easily. Please don't stop your atenolol, and talk with your pharmacist or doctor before using any yohimbine product.
Effect: Yohimbine may pharmacodynamically antagonize the antihypertensive effect of atenolol, risking inadequate blood pressure control.
Mechanism: Yohimbine is an alpha-2 antagonist that increases sympathetic outflow and norepinephrine release (central stimulation, blockade of presynaptic inhibitory alpha-2 receptors, and reflex sympathetic activation from vasodilation). This opposes beta-blockade. Neither agent is metabolized to an active form relevant here.
- Direction: reduced atenolol effectiveness (PD antagonism)
- Onset: rapid
- Evidence: theoretical; yohimbine raised BP in normotensive and hypertensive subjects
- Management: avoid concomitant use; if unavoidable, monitor BP and heart rate closely and individualize therapy
What happens
Reduced beta-adrenergic blocker effectiveness
Interaction Deep Dive
In theory, yohimbine could directly oppose the blood-pressure-lowering action of beta-adrenergic blockers, which may lead to insufficient blood pressure control among hypertensive patients. Across a number of studies, yohimbine raised blood pressure in both hypertensive and normotensive patients12345. The rise in norepinephrine release attributed to yohimbine is thought to occur through at least one of three pathways: direct stimulation of sympathetic outflow originating in the brain; blockade of inhibitory alpha-2 adrenergic receptors located on sympathetic nerve endings; or blockade of alpha-2 adrenergic receptors on vascular smooth muscle, producing vasodilation that triggers reflexive increases in sympathetic outflow4.
Why it happens (mechanism)
Increased norepinephrine release by yohimbine
How to manage this interaction
The documented guidance is to avoid using yohimbine together with atenolol, because yohimbine can counteract atenolol's blood-pressure-lowering effect.
- Keep taking your atenolol as prescribed. Do not stop or change it on your own.
- Before starting or continuing any yohimbine-containing supplement, check with your pharmacist or prescriber.
- If both are ever used, your care team may monitor your blood pressure and heart rate more closely and tailor your treatment.
- Report symptoms like a pounding heart, anxiety, or high blood pressure readings.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
5 reports — tap to read
a) In a placebo-controlled study involving 25 healthy volunteers and 29 sex- and age-matched untreated patients with mild to moderate hypertension, oral yohimbine 10 mg caused a significant rise in diastolic blood pressure after 10 minutes of standing, but this occurred only in the hypertensive patients. Yohimbine significantly raised plasma norepinephrine concentrations in both groups. Dopamine concentrations rose significantly only in the normotensive subjects following yohimbine administration (specific values were not reported) 1.
b) In a study of 25 adult patients with uncomplicated essential hypertension, oral yohimbine 21.6 mg promoted norepinephrine release and produced a pressor response. Baseline systolic and diastolic blood pressures were 144 +/- 4 and 83 +/- 3 mmHg, respectively. Patients stopped any antihypertensive medication 2 weeks before the study. One hour after yohimbine was given, systolic pressure rose to 150 +/- 5 mmHg and diastolic pressure rose to 86 +/- 3 mmHg. Yohimbine did not significantly alter heart rate. Norepinephrine concentrations rose from 293 +/- 29 picograms (pg)/mL (1.732 +/- 0.171 nanomol (nmol)/L) at baseline to 486 +/- 67 pg/mL (2.873 +/- 0.396 nmol/L) one hour after yohimbine administration 2.
c) Oral yohimbine 0.2 mg/kg raised plasma noradrenaline concentrations by 67% in 9 hypertensive patients and by 178% in 6 normotensive patients. Blood pressure rose significantly following yohimbine in the hypertensive subjects but not in the normotensive subjects. Patients were not taking medications affecting blood pressure or the sympathetic nervous system; the hypertensive patients had a mean age of 68 years and the normotensive patients a mean age of 63 years 3.
d) In a study of 19 hypertensive patients and 19 normotensive patients, intravenously administered yohimbine significantly raised mean arterial pressure, norepinephrine, and epinephrine concentrations in all patients. Yohimbine was given as a 0.125 mg/kg IV bolus followed by a 0.001 mg/kg/minute infusion over 15 minutes. Patients stopped all medications 2 weeks before the study. The hypertensive patients had a mean age of 35 years and the normotensive patients a mean age of 30 years. Mean arterial pressure rose from 106 +/- 4 mmHg to 127 +/- 5 mmHg in the hypertensive group and from 88 +/- 2 mmHg to 101 +/- 3 mmHg in the normotensive group; the increase was significant versus baseline in all patients 4.
e) In a randomized, double-blind study of 17 male volunteers, oral yohimbine 40 mg increased the rate at which norepinephrine appeared in the plasma without lowering norepinephrine clearance. Plasma epinephrine rose significantly. Diastolic blood pressure increased, as did mean arterial blood pressure and pulse 5.
Common questions
Can I take Yohimbine and Atenolol together?
Yohimbine can work against atenolol and raise your blood pressure, so it is best avoided while taking a beta blocker. Talk with your pharmacist or doctor before using any yohimbine product, and keep taking your atenolol as prescribed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Yohimbine and Atenolol interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "rapid". Effects can appear quickly, often within about 24 hours of combining the drugs.
How is the Yohimbine and Atenolol interaction managed?
The documented guidance is to avoid using yohimbine together with atenolol, because yohimbine can counteract atenolol's blood-pressure-lowering effect. Keep taking your atenolol as prescribed. Do not stop or change it on your own. Before starting or continuing any yohimbine-containing supplement, check with your pharmacist or prescriber. If both are ever used, your care team may monitor your blood… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
Questions for your pharmacist
- Does my dose of Yohimbine or Atenolol need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there anything you'd monitor while I'm on both?
References (5)
- Musso NR, Vergassaol C, Pjende A, et al: Yohimbine effects on blood pressure and plasma catecholamines in human hypertension. Am J Hypertens 1995; 8(6):565-571. PubMed
- Grossman E, Rosenthal T, Peleg E, et al: Oral yohimbine increased blood pressure and sympathetic nervous outflow in hypertensive patients. J Cardiovasc Pharmacol 1993; 22(1):22-26.
- Damase-Michel C, Tran MA, Llau ME, et al: The effect of yohimbine on sympathetic responsiveness in essential hypertension. Eur J Clin Pharmacol 1993; 44(2):199-201. PubMed
- Goldstein DS, Grossman E, Listwak S, et al: Sympathetic reactivity during a yohimbine challenge test in essential hypertension. Hypertension 1991; 18(Suppl 5):III40-48. PubMed
- Murburg MM, Villacres EC, Ko GN, et al: Effects of yohimbine on human sympathetic nervous system function. J Clin Endocrinol Metab 1991; 73(4):861-865. DOI
Keep reading about Atenolol
Keep reading about Yohimbine
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