Powergra

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Medically reviewed

Marina Burgos

Last updated on 22/12/2025

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.

Overview of Powergra

Powergra: Defining the Drug Entity and Pharmacological Class

Property Description
Active ingredient Sildenafil (as Sildenafil citrate)
Form Film-coated tablet
Pharmacological class Phosphodiesterase type 5 (PDE5) inhibitor
Common use Assistance with circulatory-based function
Origin Synthetic compound

Powergra is an oral pharmaceutical preparation containing the active ingredient Sildenafil, which is identified as a synthetic compound. Its essential classification places it within the scientific family of Phosphodiesterase type 5 (PDE5) inhibitors.

This classification is foundational to understanding the medication's nature: Sildenafil was the pioneering selective PDE5 inhibitor approved for medical use, acting as a single-agent product designed to target this specific enzyme. As a synthetic entity, the active substance is chemically produced, typically formulated as the salt Sildenafil citrate to ensure stability and bioavailability within the final preparation. Sildenafil selectively targets PDE5, an action that is recognized across relevant vascular tissues. This targeted effect involves the specific enzyme that regulates blood vessel function.

Composition, Form, and General Therapeutic Function

The common physical form of this preparation is a film-coated tablet intended for oral administration, meaning the substance is swallowed and absorbed through the digestive system. The composition consists of the active Sildenafil citrate and inert solid oral base excipients necessary for manufacturing the tablet form. As a non-INN branded product, Powergra represents a specific manufacturer's formulation of Sildenafil, primarily focused on the adult male patient group seeking oral therapy.

The drug's general therapeutic function relates to its capacity to act as a vasodilator agent that enhances targeted blood flow. This effect assists the body by relaxing vascular smooth muscle, thereby supporting the body’s natural physiological responses to address specific circulatory difficulties. The medication is generally utilized to assist in managing conditions that benefit from this targeted circulatory enhancement, a typical use scenario being the facilitation of sufficient circulation for achieving an erection (erectile dysfunction, ED) or managing vascular pressure in the lungs (pulmonary arterial hypertension, PAH). The medication is used in managing conditions related to insufficient blood flow.

Regulatory References

  1. Sildenafil - StatPearls - NCBI Bookshelf
  2. Sildenafil: MedlinePlus Drug Information

What side effects are possible with Powergra?

Possible Side Effects and Safety Information

The safety profile of Powergra (Sildenafil) is based strictly on government regulatory documents, which categorize known risks by frequency and the body system affected. All documented adverse reactions and safety statements originate from official prescribing information.

Frequency-Classified Adverse Reactions

The following are examples of adverse reactions classified by frequency in regulatory labeling:

Classification Examples of Documented Adverse Reactions
Very Common Headache
Common Flushing, Nasal congestion, Dyspepsia, Visual color distortions
Rare Non-arteritic Anterior Ischemic Optic Neuropathy (NAION), Sudden cardiac death, Priapism, Cerebrovascular accident (stroke)

System-Organ Class Involvement

Adverse reactions are formally grouped into affected body systems, including Nervous system disorders (e.g., dizziness, stroke), Eye disorders (e.g., visual disturbances), and Vascular disorders (e.g., hypotension). Serious events such as Myocardial Infarction and sudden hearing loss are also officially documented.

Regulatory Safety Constraints

Official labeling defines specific safety limitations and contraindications for use:

  • Organic Nitrates: The medicine is contraindicated with the use of any form of organic nitrates or guanylate cyclase stimulators due to the risk of severe hypotension.
  • Pre-existing Conditions: It is not recommended for use in patients with severe hepatic impairment or certain hereditary retinal disorders like retinitis pigmentosa.
  • Specific Risks: Caution is advised for patients with conditions predisposing them to a prolonged erection (Priapism), and the safety in patients with bleeding disorders or active peptic ulceration is officially stated as unknown.

Overdose and Emergency Response

Over-exposure to Powergra (Sildenafil) is officially documented to result in an increase in the incidence and severity of known adverse effects, rather than unique toxic manifestations. Common presentations of over-exposure include severe hypotension (decreased blood pressure) and potential episodes of syncope. Since no specific pharmacological antidote is known, regulatory guidance dictates that management must rely on symptomatic treatment and standard supportive measures.

When Immediate Medical Help is Required

Regulatory authorities mandate immediate medical assistance for several time-critical adverse events. This urgent action is required if an erection persists for longer than four hours to prevent the risk of penile tissue damage and permanent loss of potency. Patients are also explicitly advised to seek immediate consultation upon experiencing sudden loss of vision or a sudden decrease or loss of hearing, as these may indicate serious physiological events.

Population and Risk Notes

Official prescribing information notes that drug clearance is reduced in patients with severe hepatic or renal impairment, which increases systemic exposure and may exacerbate the effects of over-exposure. Furthermore, severe outcomes, including increased mortality, have been documented with dose escalation in pediatric patients for related Sildenafil products.

Therapeutic Uses of Powergra

What Powergra Treats: Main Uses and Benefits

Powergra is commonly used to provide symptomatic support across several key therapeutic domains. The medication may assist with managing symptoms that create noticeable functional strain and provides support that helps ease the overall symptom load. It is applied in contexts where additional symptomatic support is needed for conditions involving acute or disruptive episodes.

The medication may be relevant for easing symptoms related to heightened physiological activity or increased systemic tension. Its application is considered relevant across conditions presenting with episodic manifestations, conditions characterized by periods of heightened symptoms, and those involving temporary functional stress. Clinical scenarios often involve phases where symptoms intensify and short-term symptomatic assistance is needed.

“Powergra supports the patient during difficult episodes by easing distress.”

Powergra is commonly used to help with symptom clusters that may appear suddenly or intensify temporarily. It assists with maintaining a sense of stability when symptoms become more noticeable.

Quick Fact: Support During Functional Strain Powergra is considered relevant for use in settings where symptoms interfere with daily functioning, providing short-term assistance that supports symptom stabilization.

Regulatory References

  1. NIH MedlinePlus Drug Information on Sildenafil

Eligibility and Restrictions for Use

Who Can and Cannot Use Powergra?

Powergra's eligibility is strictly defined by regulatory bodies and centers on the patient's cardiovascular health and concurrent medications. The medicine is contraindicated in several patient groups, meaning it must not be used under any circumstances.

Eligibility Status Key Conditions/Populations
Absolute Contraindication Concomitant use of any organic nitrates or guanylate cyclase stimulators (like riociguat). Severe hepatic impairment (Child-Pugh Class C). Recent history of stroke or myocardial infarction. Resting hypotension (BP < 90/50 mmHg). Severe cardiac failure or conditions making sexual activity inadvisable. Individuals under 18 years of age (for ED indication).
Restricted/Conditional Use Severe renal impairment (requiring caution and potential dose adjustment). Older adults (ge 65 years). Anatomical deformation of the penis (e.g., Peyronie’s disease). Conditions predisposing to priapism (e.g., sickle cell anaemia).

For women, the medicine is not indicated for erectile dysfunction. Use in pregnancy and lactation is generally not recommended due to insufficient safety data or lack of established risk profiles in regulatory documentation. The regulatory profile clearly establishes mandatory exclusions and specific populations requiring careful evaluation before initiation.

What should I know about interactions with other medicines?

Powergra Interactions with other medicines and products

Powergra (sildenafil) can interact with a number of medicines, which may increase the risk of serious side effects, such as a dangerous drop in blood pressure. It is crucial to inform your healthcare provider about all prescription and non-prescription medicines, vitamins, and herbal supplements you are currently taking.

Contraindicated Medicines

The following medications must not be taken with Powergra due to the risk of severe, potentially fatal, hypotension (very low blood pressure):

  • Nitrates: Used for chest pain (angina), such as nitroglycerin (sublingual tablets, sprays, patches, or ointments) and isosorbide dinitrate/mononitrate. This includes recreational drugs containing nitrates (often called "poppers").
  • Guanylate Cyclase (GC) Stimulators: Such as riociguat, used for pulmonary hypertension.

Medicines Requiring Caution

Powergra should be used with caution, often requiring a dose adjustment, if you are taking any of the following:

  • Alpha-blockers (e.g., doxazosin, tamsulosin), often prescribed for prostate problems or high blood pressure, as co-administration can lead to hypotension.
  • HIV Protease Inhibitors (e.g., ritonavir), which can significantly increase Powergra levels in the body, raising the risk of side effects.
  • Certain Antifungal Medications (e.g., ketoconazole, itraconazole) and antibiotics (e.g., erythromycin), which can also increase the concentration of Powergra in the blood.
  • Other Erectile Dysfunction Treatments (e.g., avanafil, tadalafil, vardenafil), as combining them is not recommended due to increased side effect risk.

Other Interactions

Consuming grapefruit or grapefruit juice may increase the amount of Powergra in your bloodstream, potentially increasing side effects. It is advisable to limit or avoid grapefruit products while taking this medication. Alcohol consumption should be moderate, as excessive alcohol can increase the risk of dizziness and low blood pressure.

Mechanism of Action

Selective Inhibition of the PDE5 Enzyme

Powergra's core mechanism involves the selective competitive inhibition of the Phosphodiesterase type 5 ( PDE5) enzyme. This action prevents the rapid breakdown of the intracellular messenger, Cyclic Guanosine Monophosphate ( cGMP), which regulates smooth muscle tone.


Prolongation of the NO- cGMP Signaling Cascade

By blocking PDE5, the drug prolongs the effect of the body’s natural Nitric Oxide ( NO) signaling pathway, enabling the cGMP signal to persist longer than usual. This sustained signal initiates a downstream cascade that leads to the relaxation of vascular smooth muscle cells.


Targeted Regional Vasodilation and Increased Blood Flow

The resulting smooth muscle relaxation causes vasodilation (widening of the blood vessels) in areas where PDE5 is highly expressed. This physiological change selectively increases regional blood flow (perfusion), which is the primary system-level effect produced by the drug's mechanism. The mechanism is dependent on the prior release of NO to trigger the cascade.

Dosage and Administration Information

How Powergra is Used: General Administration Guidelines

The usage of Powergra, which contains the active ingredient Sildenafil, is described for its two primary contexts: Erectile Dysfunction (ED) and Pulmonary Arterial Hypertension (PAH). The oral route is the most common administration method, utilizing film-coated tablets in strengths that range from 20 mg up to 100 mg.


Administration and Dosing Structure

The treatment pattern depends on the specific indication, dictating whether the medicine is used intermittently or continuously.

Indication Dosing Pattern and Frequency Standard Dosing Rules
Erectile Dysfunction (ED) Used as needed, with a maximum frequency of once per day. Typical starting dose is 50 mg. The dose range extends from 25 mg to a maximum single dose of 100 mg.
PAH Used on a fixed schedule, typically three times a day (TID). Standard oral dose is 20 mg, administered approximately 4 to 6 hours apart.

Contextual Use and Population Adjustments

For the ED indication, the medicine is typically taken approximately one hour before activity, though the timing window extends from 30 minutes to 4 hours. Administration is possible with or without food, but a high-fat meal may lead to a delay in the onset of effect.

Guidelines describe dose adjustments for certain patient groups. For older adults and patients with severe renal or hepatic impairment, a lower initial dose of 25 mg for ED use is generally noted. Protocols indicate that patients should not use the ED and PAH formulations concurrently.

Recent Clinical Evidence

Powergra: Recent Clinical Evidence


Evidence for use in Circulatory-Based Functional Difficulties (Erectile Dysfunction, ED)

Research has explored the compound in studies investigating symptoms of circulatory-based functional difficulties, such as erectile dysfunction (ED). This analysis primarily utilized numerous Randomized, Double-Blind, Placebo-Controlled Clinical Trials (RCTs). Researchers focused on measuring changes in patient-reported outcomes describing perceived discomfort related to sexual function. Findings from the primary research described patterns observed in these outcomes, with subsequent meta-analyses contributing to the broader evidence landscape. Long-term outcomes extending beyond the typical 12-week follow-up are not comprehensively characterized. Research indicates that results apply only to the specific populations studied, which included subgroups defined by other conditions, such as diabetes mellitus, and those who have undergone specific procedures.


Evidence for use in Vascular Pressure Management (Pulmonary Arterial Hypertension, PAH)

Research has also explored the compound in studies investigating conditions associated with increased vascular pressure in the lungs (Pulmonary Arterial Hypertension, PAH). This evidence was developed through pivotal Multicenter, Randomized, Double-Blind, Placebo-Controlled Trials. Research examined outcomes related to physiological strain in individuals with PAH, primarily using objective measures of exercise capacity, such as the 6-Minute Walk Distance (6MWD). Studies monitored changes measured during the short-term study period (typically 12 to 16 weeks).


What is Still Uncertain About the Research for Powergra

Findings from the body of evidence highlight what is known and what is still uncertain about Powergra. For both main areas of study, follow-up durations were limited to the timeframes of the clinical trials. Research also indicates that data for certain patient groups, such as the pediatric PAH population, remain insufficient, and certain long-term effects in children are not fully established. Evidence for this population is subject to specific research limitations.

Frequently Asked Questions (FAQ)

Common questions about Powergra (FAQ)


Q: How quickly does Powergra start to work after taking it?

A: Official prescribing information indicates that the active ingredient typically reaches its highest concentration in the bloodstream approximately one hour after it is taken orally. The timeframe for reaching this peak concentration is variable among individuals. If the medicine is taken with a high-fat meal, this process may be delayed.


Q: How long does the effect of Powergra last?

A: The elimination half-life of the medicine is generally described as approximately four hours, which is an indication of the timeframe over which the compound remains active in the body. The precise duration of a therapeutic response may vary depending on individual physiological factors.


Q: Is Powergra a cure for the condition it treats?

A: Powergra is officially described as a treatment intended to manage the symptoms of the conditions for which it is prescribed, such as improving the ability to achieve an erection or enhancing exercise capacity in pulmonary arterial hypertension (PAH). Official regulatory documents do not describe the medicine as a cure for the underlying diseases.


Q: What happens if I miss a dose of Powergra?

A: If a dose for the fixed-schedule treatment (PAH indication) is missed, official guidance generally indicates that patients should take it as soon as they remember, unless it is nearly time for the next scheduled dose. If that is the case, official guidance generally indicates that patients should skip the missed dose and resume the usual schedule. Regulatory warnings typically advise against taking two doses at the same time to make up for a missed dose.


Q: Is it normal to feel a tingling sensation after taking Powergra?

A: The official product documentation provides a comprehensive list of known adverse reactions. While a tingling sensation (paresthesia) is not typically listed as a common or very common side effect, it may be noted in broader safety reports for the compound. It is appropriate to review any experienced side effects with a healthcare provider.


Q: Does Powergra affect fertility in men or women?

A: Preclinical studies (animal data) summarized in regulatory documents indicate no adverse effects on fertility in those animal models. Official safety documentation notes that the effects on human fertility are not fully characterized.


Q: Is Powergra addictive or habit-forming?

A: Authoritative medical reviews and regulatory documents do not classify the active ingredient in Powergra as physically addictive or habit-forming. The medicine is not associated with the creation of physical dependence.


Q: What are the long-term effects of taking Powergra?

A: The safety and effectiveness of the medicine have been explored in clinical trials with defined follow-up periods, sometimes lasting up to a few years. Official documents acknowledge that while these studies support continued use during the trial period, long-term safety data extending over many years are limited or not fully characterized in official documents.


Q: Can Powergra be split in half if the dose feels too strong?

A: Some official product packaging for Powergra tablets describes the tablet form as having a score line, which is designed to facilitate dosage adjustments. Dose adjustments, including those that might involve splitting tablets, are to be determined by a healthcare provider. Any physical modification of the tablet should align with the manufacturer’s instructions for that specific product.


Q: How does Powergra affect the heart?

A: The drug's mechanism leads to vasodilation (widening of blood vessels), which typically results in a modest reduction in blood pressure. The medicine is not generally described as directly affecting the force of the heart muscle contraction. Official guidelines emphasize that overall cardiovascular health is a key factor in determining eligibility for use.


Q: Is there a generic version of Powergra available?

A: Yes, the active ingredient in Powergra, sildenafil, is available from various companies as a generic prescription medicine. Regulatory bodies confirm that the generic version must meet the same standards for quality, strength, and bioequivalence as the brand-name product.


Q: What is the earliest age someone can be prescribed Powergra?

A: For the indication of erectile dysfunction, the medicine is officially contraindicated in individuals under 18 years of age. For the pulmonary arterial hypertension (PAH) indication, the medicine is approved in adults, and its use in pediatric patients is subject to specific regulatory limitations.


Q: Is it dangerous to take Powergra more often than recommended?

A: Regulatory documents explicitly state the maximum recommended dosing frequency, such as once per day for the erectile dysfunction indication. Using the medicine more often than the recommended maximum frequency or taking a higher dose increases the risk of adverse side effects, including the possibility of severe hypotension (very low blood pressure), as stated in regulatory documents.


Q: Can Powergra be taken with herbal supplements?

A: Official regulatory warnings advise patients to inform their healthcare provider about all medicines, including herbal supplements. Herbal products are generally not subject to the same rigorous testing for drug interactions as prescription medicines, and therefore, their potential effects when combined with Powergra are not fully characterized in regulatory documents.


Q: What is the difference between Powergra and other similar medicines?

A: Powergra belongs to the pharmacological class of medicines called Phosphodiesterase type 5 (PDE5) inhibitors. While all medicines in this class share a core mechanism of action, official reviews note that they can differ in their chemical structure, time to effect, duration of action, and specific side effect and interaction profiles.


Q: What happens when Powergra leaves the body?

A: The active ingredient is broken down (metabolized) primarily by specific enzymes in the liver. The drug and its main inactive breakdown products are then largely eliminated from the body through the faeces (bowel movements), with a smaller portion passing through the urine.


Q: Can people with diabetes safely use Powergra?

A: Clinical trials for the erectile dysfunction indication included individuals diagnosed with diabetes mellitus, and the drug was shown to be effective in this patient subgroup within the studies. Regulatory materials clarify that eligibility for the medicine depends on a review of a patient's overall health and cardiac status, beyond the presence of diabetes.


Q: Is the effectiveness of Powergra proven by scientific evidence?

A: Yes, the regulatory approval of Powergra is based on data collected from numerous, rigorous Randomized, Double-Blind, Placebo-Controlled Clinical Trials (RCTs). This evidence, summarized in official documents, supports the drug's effectiveness for its approved indications (ED and PAH) when compared to an inactive placebo in the study populations.


Q: Is Powergra effective for psychological or stress-related issues?

A: The drug is officially indicated only for the treatment of physical conditions: Erectile Dysfunction and Pulmonary Arterial Hypertension. The primary mechanism involves physical effects on blood vessels, and the medicine is not indicated or approved for the treatment of psychological disorders or stress itself.

How should Powergra be stored and disposed of?

How to Store and Dispose of Powergra

Storage Requirements

Powergra (Sildenafil citrate) tablets must be stored at Controlled Room Temperature, specifically 25°C (77°F), with acceptable temperature excursions between 15 C and 30 C (59 F and 86 F). The product must be protected from excess heat and excess moisture, which requires keeping it in the original container with the cap tightly closed. A mandatory safety requirement is that the medication must be kept out of the sight and reach of children.

Disposal Instructions

Official regulatory guidelines recommend disposing of unused or expired tablets through an authorized drug take-back program. If a take-back program is not available, the tablets should be mixed with an undesirable substance, like used coffee grounds or dirt, and placed in a sealed container before being discarded in household trash. Do not flush the tablets down the toilet.

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

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