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Procomil (Yohimbine)

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Procomil (Yohimbine)

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Method of action: Urologicals

Treatment option: Impotence

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

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Overview of Procomil (Yohimbine)

Property Description
Active ingredient Yohimbine (Yohimbine hydrochloride)
Form Oral solid preparations (Tablet or Capsule)
Pharmacological class Alpha-2 Adrenergic Receptor Antagonist
Common use Supporting physiological response and nerve signaling
Origin Plant alkaloid (Pausinystalia yohimbe)

What Type of Medicine is Procomil (Yohimbine) and What is its Origin?

Procomil is a medicinal product defined by its active ingredient, Yohimbine, a compound officially classified as an Alpha-2 Adrenergic Receptor Antagonist. Yohimbine is recognized as an indole alkaloid, a class of naturally occurring compounds that is primarily sourced from the bark of the West African tree Pausinystalia yohimbe. Pharmacological studies have supported its mechanism of action, making it a subject of continuous research into its effects on the sympathetic nervous system.

This classification positions the compound within a group of agents that specifically target certain regulatory receptors. While its source is natural, the purified salt form, Yohimbine hydrochloride, is used for pharmaceutical standardization. The compound has been clinically recognized for its potential application in conditions requiring modulation of central and peripheral nerve signaling, particularly in adult male patients.

Composition, Form, and General Purpose of Yohimbine

The composition of Procomil is based on a single active ingredient, Yohimbine (hydrochloride), typically formulated into Oral solid forms such as a Tablet or Capsule for Oral administration. The product is primarily intended to support and enhance specific physiological functions that rely on optimized nerve signaling and localized circulatory changes, often within a urological context.

Clinical observations indicate that the drug provides a modest benefit in supporting the physiological processes required for sexual function. Its primary pharmacological action is derived from its ability to modulate the body’s autonomic nervous system. The overall goal is to achieve a targeted physiological response by addressing signaling imbalances.

Core Mechanism: How Yohimbine Modulates Nerve Signaling

Yohimbine's core mechanism involves the blocking of presynaptic Alpha-2 adrenergic receptors, which normally act to inhibit the release of stimulating neurochemicals. By acting as an antagonist, Yohimbine leads to a targeted increase in the release of norepinephrine, a key neurotransmitter that enhances sympathetic nerve activity.

This process results in a functional disinhibition of the sympathetic nervous system in specific tissues. This targeted effect is the foundational principle for its general therapeutic application, contrasting it with general systemic vasoconstrictors. The mechanism is a well-established concept in adrenergic pharmacology.

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What side effects are possible with Procomil (Yohimbine)?

Possible Side Effects and Safety Information

Official regulatory documents classify the safety profile of Yohimbine based on the physiological systems affected, primarily involving the nervous system and the cardiovascular system. Adverse reactions are grouped by System-Organ Class and documented frequency, strictly according to official prescribing information.

Documented Adverse Reactions

The most frequently documented adverse reactions are categorized as Common and typically involve Nervous System Disorders (such as tremor and headache) and Cardiac/Vascular Disorders (including tachycardia and hypertension). Other common effects include Psychiatric Disorders like nervousness and anxiety, and Gastrointestinal Disorders such as nausea and vomiting.

Adverse effects concerning the heart rate and feelings of anxiety are officially noted as more likely to appear at the beginning of treatment or following a dose adjustment.

Serious Adverse Reactions and Safety Constraints

Regulatory sources explicitly document a category for Serious Adverse Reactions, although these are considered rare. These include Acute Renal Failure, Seizures, Priapism (a prolonged, painful erection), and significant fluctuations in blood pressure, such as Severe Hypotension.

The official labeling defines specific safety constraints for use. The medicine is contraindicated in individuals with severe, pre-existing conditions, including Severe Renal Disease, Severe Hepatic Disease, unstable Cardiovascular Disease (severe hypertension/hypotension), Pheochromocytoma, and a history of severe Anxiety Disorders.

Population-Specific Safety: Older adults are formally noted as having increased sensitivity to the cardiovascular and neurological adverse reactions of the compound.

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Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information describes overdose with Yohimbine as an event capable of causing severe systemic toxicity, primarily affecting the Central Nervous System (CNS) and Cardiovascular System. Immediate medical attention must be sought for any suspected overdose due to the potential for life-threatening outcomes.

Documented Overdose Presentations

Feature Official Regulatory Statement (Label-Derived)
Documented Manifestations Tachycardia, Hypertension, Anxiety, Agitation, Tremors, Drowsiness, Disorientation, Sweating, Nausea, and Vomiting.
Severe Outcomes CNS excitation, Seizures, Myocardial Infarction, Renal Failure, Cardiac Arrest, and Death are associated with severe overexposure.
Emergency Action Required Seek immediate medical attention; urgent management at a healthcare facility is mandated.
Antidote Information No specific antidote is known.

Official Management Profile

Regulatory documents classify severe outcomes as critical, necessitating continuous hospital monitoring for cardiovascular and neurological status. Since there is no specific antidote, management is defined as symptomatic and supportive treatment. Procedural steps, such as gastric decontamination (e.g., activated charcoal), may be considered if the ingestion was recent.

This official profile mandates the urgency of contacting emergency services when overexposure is suspected, given the potential for rapid progression to a severe or fatal outcome.

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Therapeutic Uses of Procomil (Yohimbine)

What Procomil (Yohimbine) Treats: Main Uses and Benefits

The active ingredient, Yohimbine, is generally considered relevant for managing specific symptomatic patterns of erectile dysfunction (ED) in adult male patients, where purified Yohimbine may be part of symptomatic management in situations where supportive management is appropriate. The medication is considered relevant across conditions presenting with episodic or fluctuating manifestations of ED, particularly those categorized as nonorganic erectile dysfunction, and when additional management for discomfort or functional strain is required.

It is relevant for easing symptoms linked to physical discomfort and is applied in addressing symptomatic patterns of ED, such as the inability to achieve a firm erection or the inability to sustain an erection. The product plays a role in managing symptoms related to functional stress. It is often used during phases when symptoms become more noticeable, providing supportive relief when symptoms interfere with routine activities. It may assist with maintaining functional stability and supports general well-being during symptomatic phases.


Quick Fact: Relevant for Functional Strain Yohimbine is applied in scenarios where symptoms create noticeable functional strain related to erection quality and is considered relevant for managing milder presentations of ED.

Regulatory References

  1. National Institutes of Health (NIH)
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Eligibility and Restrictions for Use

Who Can and Cannot Use Procomil (Yohimbine)?

Official regulatory guidelines strictly define the population eligible to use yohimbine hydrochloride, primarily restricting use to adult male patients who do not present with specific contraindications. Use is officially established only for this adult population.

Absolute Contraindications (Must Not Use)

Yohimbine is absolutely contraindicated and must not be used by individuals with the following pre-existing conditions:

  • Cardiorenal Conditions: Hypertension, heart disease (e.g., angina pectoris), renal disease, and hepatic dysfunction.
  • Neuropsychiatric Conditions: Anxiety, panic disorder, schizophrenia, or Post-Traumatic Stress Disorder (PTSD).
  • Drug Interactions: Patients currently taking Monoamine Oxidase Inhibitors (MAOIs).

Age and Special Population Restrictions

Population Group Eligibility Status Basis
Pediatric Patients (Under 18) Use Not Established Safety and effectiveness have not been confirmed in this age group.
Geriatric Patients (Older Adults) Not Recommended Use is generally advised against due to safety considerations.
Pregnancy/Lactation Contraindicated Prohibited in pregnancy; requires discontinuation of nursing or medication during lactation.

Eligibility is also generally restricted for patients with a history of gastric or duodenal ulcers, or those with prostate conditions like Benign Prostatic Hyperplasia (BPH).

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What should I know about interactions with other medicines?

Procomil, which contains the active ingredient Yohimbine, has officially documented interaction patterns that are classified by regulatory agencies based on both pharmacokinetic and pharmacodynamic conflicts.

Contraindicated Combinations and Timing Rules

Co-administration with Monoamine Oxidase Inhibitors (MAOIs) and Sympathomimetic Stimulant Drugs (such as certain amphetamines) is contraindicated. These combinations are prohibited due to the high risk of additive sympathetic effects, which regulatory documents state can lead to severe adverse reactions like hypertensive crisis. The official prescribing information also explicitly lists Mavorixafor as a prohibited co-administered medicine. A formal timing-based rule requires a defined separation period (often 14 days) between using Yohimbine and these contraindicated agents.

Pharmacodynamic and Metabolic Effects

Yohimbine can cause pharmacodynamic antagonism with Antihypertensive Agents (e.g., Clonidine), potentially diminishing their effect. Regulatory documents note that Yohimbine may act as a CYP2D6 inhibitor. This metabolic effect can result in the increased plasma concentration of other co-administered medications that are CYP2D6 Substrates. Furthermore, using Yohimbine with Alcohol or Tyramine-rich foods may increase the risk of certain adverse effects.

Population-Specific Restrictions

The official prescribing information includes restrictions concerning specific patient populations. The use of Yohimbine is explicitly contraindicated in patients with renal impairment. Additionally, the drug's effects may be increased in patients with liver disease due to documented slower systemic clearance.

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Mechanism of Action

Targeted Blockade of Inhibitory alpha2 Adrenergic Receptors

Yohimbine's primary mechanism involves the competitive antagonism of presynaptic alpha2 adrenergic receptors on sympathetic nerve endings. By occupying these receptors, the drug functionally abolishes the normal negative feedback mechanism that normally constrains the release of the stimulating neurotransmitter norepinephrine (NE). This specific molecular interaction serves as the initiating step for the molecule's downstream physiological effects.

Disinhibition and Amplification of Sympathetic Signaling

The resulting functional disinhibition significantly elevates NE concentration in the synaptic clefts of both the central and peripheral nervous systems. This increased NE concentration leads to amplified activation of postsynaptic alpha1 and beta receptors, initiating a systemic sympathoexcitation. This enhancement in nerve signaling and the resulting modulation of localized vascular smooth muscle tone are the systemic and localized physiological consequences.

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Dosage and Administration Information

Official Administration Guidelines for Yohimbine

The administration of pharmaceutical-grade Yohimbine hydrochloride involves a standardized approach to its use.

Administration Scope Official Instruction
Route of Administration The preparation is for oral intake, typically as a tablet or capsule form
Standard Dosing Schedule The usual adult dose is 5.4 mg taken three times a day. If initial intolerance occurs, the starting dose may be reduced to 2.7 mg three times daily, followed by a gradual titration to the usual dose.
Frequency Pattern The drug is to be taken three times a day (TID) to maintain a consistent administration schedule.

Dosing Instructions and Population Constraints

The frequency and dose define a scheduled pattern of use that requires consistency throughout the day. If a dose is missed, it should be taken as soon as possible; however, if it is almost time for the next scheduled dose, the missed dose must be skipped. Doses should not be doubled to compensate for a missed dose.

Specific constraints on use exist for certain populations. Administration is contraindicated in patients with renal disease due to usage risks. Furthermore, safety and effectiveness have not been established for pediatric patients under 18 years of age, and use is generally discouraged in geriatric patients. The decision to discontinue therapy is typically based on a lack of observed response over the course of treatment.

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Recent Clinical Evidence

Procomil (Yohimbine): Recent Clinical Evidence

Evidence for Use in Erectile Dysfunction (ED)

The research for Yohimbine, the active ingredient in Procomil, was examined in studies focusing on symptoms of erectile dysfunction (ED), primarily through short-term, placebo-controlled Randomized Controlled Trials (RCTs) and Systematic Reviews. Studies examined adult male patients, exploring changes in sexual function via patient self-reporting and objective assessments like penile rigidity. Aggregated data describe patterns observed in function compared to placebo treatments; however, the overall evidence is characterized by short follow-up durations.

Evidence in Different Etiologies

Research has explored how observed patterns might differ depending on the root cause. Studies focused on psychogenic or nonorganic causes have generally reported different observed patterns than those focused on organic ED. Data for the organic subgroup remain insufficient, and findings indicate different patterns depending on the type of ED studied in the research setting.

Long-Term Studies and Follow-up Data

The research is limited to investigating short-term symptom changes over periods of only a few months. Long-term outcomes are not well characterized, as data on the persistence of observed outcomes beyond the study period remain insufficient. The studies provide context on short-term changes, but limited information is available for understanding the effects of extended use.

Evidence Gaps and Areas of Uncertainty

The evidence base is limited by modest sample sizes, and data for specific groups like individuals with severe ED or complex comorbidities remain insufficient. Furthermore, the evidence quality varies across studies, leading to limited certainty in the broader landscape. Reports show that findings were mixed in certain subgroups, and comparative evidence is lacking for certain questions. Overall certainty remains low due to these research limitation frames.

Key Studies & References

  1. Yohimbine for erectile dysfunction: a systematic review and meta-analysis of randomized controlled trials.
  2. Yohimbine (StatPearls)
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Frequently Asked Questions (FAQ)

Common questions about Procomil (Yohimbine) (FAQ)


Q: Is Procomil a stimulant, and will it make me feel jittery or anxious?

While Yohimbine is not formally classified as a typical stimulant, its mechanism of action involves enhancing nerve signaling, a process called sympathoexcitation. Official information states that this action may cause common side effects such as nervousness, anxiety, and tremor (shaking).


Q: How long do the therapeutic effects of a single dose of Procomil typically last?

Pharmacokinetic data in regulatory references indicate the drug has a short elimination half-life, which is often cited as ranging from 0.25 to 2.5 hours. This pharmacokinetic parameter measures the time it takes for half of the drug to be cleared from the body.


Q: What are the most common mild side effects reported by users of Procomil?

Commonly documented adverse reactions include feelings of nervousness or anxiety, tremor (shaking), and headache. Cardiovascular effects like increased blood pressure and tachycardia (fast heartbeat) are also frequently reported in official product information.


Q: Does Procomil interact with antidepressant medications like SSRIs or MAOIs?

Co-administration with Monoamine Oxidase Inhibitors (MAOIs) is explicitly contraindicated (prohibited). Official product information also notes that combining Yohimbine with other classes of antidepressants, such as Tricyclic Antidepressants, may increase the risk of certain side effects like shakiness and anxiety.


Q: Can Procomil be taken alongside medications for ADHD or stimulants?

Co-administration with any medication classified as a Sympathomimetic Stimulant Drug is contraindicated (prohibited). This is due to the risk of additive sympathetic effects, which can lead to serious adverse reactions.


Q: Can consuming alcohol while taking Procomil increase the risk of side effects?

Official warnings state that using Yohimbine concurrently with ethanol (alcohol) may increase the potential for certain side effects.


Q: Are there specific foods or beverages, like those high in Tyramine, that should be avoided with Procomil?

Official warnings advise avoiding taking this medicine concurrently with foods rich in tyramine.


Q: Can Procomil cause dizziness or affect a person's ability to drive?

Regulatory documents indicate this medication may cause dizziness and/or affect a person's mood. Caution may be necessary if performing activities like driving or operating machinery.


Q: Is there a concern about Procomil affecting sleep or causing insomnia?

Insomnia (difficulty sleeping) is explicitly listed among the common adverse effects in regulatory safety documents.


Q: Is Procomil considered safe for older men (e.g., over 65)?

Official guidelines generally advise against use in older adults (geriatric patients). This is because this population is noted as having increased sensitivity to the potential cardiovascular and neurological adverse reactions of the compound.


Q: Are there any known long-term safety concerns associated with using Procomil?

Official regulatory evidence on the drug’s effects is primarily based on short-term clinical trials. Long-term outcomes and the persistence of observed results are not well characterized, and data on extended use are noted as insufficient in the evidence base.


Q: Does Procomil have an interaction with any common pain relievers (e.g., NSAIDs)?

Official drug interaction information notes that the risk of hypertension can be increased when Yohimbine is combined with certain common pain relievers.


Q: Is the source of Yohimbine (synthetic vs. natural bark extract) important for its effects?

The pharmaceutical product contains the purified salt, Yohimbine hydrochloride. Regulatory bodies note that the effects of the purified pharmaceutical salt may differ from unstandardized, over-the-counter bark preparations.


Q: How do the effects of Procomil compare to a placebo in clinical trials?

Clinical trials, as summarized in the regulatory context, suggest the drug supports physiological sexual function compared to an inactive placebo. However, the overall certainty of the evidence base is noted as low.


Q: If I have a history of stomach ulcers, is Procomil still an option?

Official prescribing information indicates that the use of Yohimbine is generally restricted or advised against for patients who have a history of gastric or duodenal ulcers.


Q: Does Procomil's effectiveness depend on the underlying cause of the sexual dysfunction?

Research reviewed in the regulatory context suggests that the patterns of observed change might differ depending on whether the underlying cause is classified as psychogenic or organic in nature. Data for the organic subgroup remain insufficient for a definitive conclusion.


Q: Is there any evidence to suggest Procomil can make symptoms of PTSD or Schizophrenia worse?

The drug is explicitly contraindicated in patients with a history of Schizophrenia, PTSD, Anxiety, or Panic Disorder. This is because the drug is known to produce symptoms like anxiety and tenseness.

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How should Procomil (Yohimbine) be stored and disposed of?

How to Store and Dispose of Procomil (Yohimbine)

Official regulatory guidelines define specific conditions for storing and discarding Yohimbine to maintain product stability and ensure safety.

Storage and Protection

Requirement Official Instruction
Temperature Store at room temperature; keep away from heat and do not freeze.
Environment Keep the medicine in a tightly closed container, protected from moisture and direct light.
Safety The medicine must be kept out of the reach of children (often specified as store locked up).

Disposal

  • Do not flush unused or expired Yohimbine down the toilet or pour it into a drain.
  • Properly discard the product when it is no longer needed.
  • Consult a pharmacist or local waste disposal service for the mandated method of discarding the contents and container, as the bulk substance is classified with strict acute toxicity and handling requirements.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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