Buy Generic Viagra Professional Online

Generic Viagra Professional Information

Introduction

Viagra Professional is a prescription medication indicated for the treatment of erectile dysfunction (ED) in adult men. Its active ingredient is sildenafil, a phosphodiesterase‑5 (PDE5) inhibitor that enhances the physiological response to sexual stimulation. In Hong Kong, erectile dysfunction is a common condition, affecting an estimated 5–10 % of men aged 40 years and older, according to local health surveys. Viagra Professional belongs to the therapeutic group “Erectile Dysfunction, Men’s Health” and is marketed for men who seek a reliable, on‑demand option to achieve satisfactory penile rigidity. The formulation is produced by an international pharmaceutical firm that complies with the standards of the Hong Kong Pharmacy and Poisons Board and other major regulatory agencies.

What is Viagra Professional?

Viagra Professional is a tablet containing the single active compound sildenafil citrate (100 mg per tablet in most formulations). It is classified as a PDE5 inhibitor and is part of the broader class of agents used to manage erectile dysfunction. The drug was originally developed by Pfizer under the brand name Viagra® and later licensed to various manufacturers for generic production. Viagra Professional is formulated to deliver the same pharmacological effect as the original brand while offering a cost‑effective alternative for patients in Hong Kong. The tablet contains inactive excipients such as microcrystalline cellulose, lactose, and magnesium stearate, which are common in oral solid dosage forms and have no known impact on the drug’s efficacy.

How Viagra Professional Works

Sildenafil exerts its effect by selectively inhibiting the enzyme phosphodiesterase type 5, which is responsible for degrading cyclic guanosine monophosphate (cGMP) in the corpus cavernosum. During sexual arousal, nitric oxide released from nerve endings stimulates the production of cGMP, leading to smooth‑muscle relaxation and increased blood flow into the penile tissue. By blocking PDE5, sildenafil prolongs the action of cGMP, thereby sustaining the vasodilatory response and facilitating an erection that is sufficient for intercourse.

The onset of action typically occurs within 30–60 minutes after oral ingestion, although absorption may be delayed by high‑fat meals. Therapeutic effects last for approximately 4–6 hours, after which plasma concentrations decline due to hepatic metabolism primarily via CYP3A4, with minor contribution from CYP2C9. The elimination half‑life of sildenafil is about 4 hours, and renal excretion accounts for 13 % of the dose as unchanged drug.

Conditions Treated with Viagra Professional

• Erectile Dysfunction (ED): The primary approved indication. ED is defined as the persistent inability to achieve or maintain an erection sufficient for satisfactory sexual performance. Clinical trials involving >5,000 men worldwide, including Asian sub‑populations, have demonstrated significant improvements in International Index of Erectile Function (IIEF) scores when treated with sildenafil.
• Pulmonary Arterial Hypertension (PAH) – off‑label use: While the formulation marketed for PAH is a different dosage (20 mg three times daily), some clinicians consider low‑dose sildenafil for PAH under specialist supervision. This practice is not formally approved in Hong Kong for the ED tablet strength.

Epidemiologically, the prevalence of ED in Hong Kong increases with age, diabetes, cardiovascular disease, and smoking. Sildenafil’s mechanism directly addresses the vascular component of the disorder, making it an evidence‑based first‑line therapy per local clinical guidelines.

Who is Viagra Professional For?

• Men with documented erectile dysfunction who experience consistent difficulty achieving an erection despite adequate sexual stimulation.
• Patients with comorbid cardiovascular disease who are medically stable, not taking nitrates, and have a normal resting blood pressure. Sildenafil is safe in many cardiac conditions because it does not affect myocardial contractility.
• Individuals with diabetes mellitus where endothelial dysfunction contributes to ED; sildenafil has demonstrated efficacy in this subgroup.
• Patients who prefer an on‑demand regimen rather than daily dosing used for some other ED agents.

Contraindications include use of nitrates (e.g., nitroglycerin), severe hypotension (systolic <90 mm Hg), recent stroke or myocardial infarction (<30 days), and known hypersensitivity to sildenafil or any tablet excipients. Caution is advised in men with severe renal or hepatic impairment, retinitis pigmentosa, or uncontrolled hypertension.

Risks, Side Effects, and Interactions

Common

• Headache
• Flushing (warmth, redness of face or neck)
• Dyspepsia (indigestion)
• Nasal congestion
• Visual disturbances (blurred vision, color tinge)

These events are usually mild to moderate in intensity and resolve without medical intervention. Dose reduction or taking the medication with food may reduce incidence.

Rare

• Myalgia or back pain, often occurring 12–24 hours after dosing and linked to PDE‑11 inhibition.
• Priapism (prolonged erection > 4 hours), requiring urgent medical attention to prevent tissue damage.
• Hypotension or dizziness, particularly when combined with antihypertensive agents.

Serious

• Cardiovascular events (myocardial infarction, arrhythmia) in patients with pre‑existing unstable heart disease.
• Severe visual loss (non‑arteritic anterior ischemic optic neuropathy), exceedingly rare but documented in post‑marketing surveillance.
• Allergic reactions such as anaphylaxis, manifested by rash, swelling, or respiratory compromise.

Drug–Drug Interactions

• Nitrates (e.g., glyceryl trinitrate, isosorbide mononitrate): Concomitant use can cause profound hypotension; contraindicated.
• CYP3A4 inhibitors (e.g., ketoconazole, ritonavir, clarithromycin): May increase sildenafil plasma levels, raising the risk of adverse events; consider dose reduction to 50 mg.
• CYP3A4 inducers (e.g., carbamazepine, phenytoin, rifampicin): May lower effectiveness; dosage adjustment may be required.
• Alpha‑blockers (e.g., tamsulosin, doxazosin): Can cause additive blood pressure lowering; start with the lowest sildenafil dose and monitor.

Patients should disclose all current medications, including over‑the‑counter products and herbal supplements, to their healthcare professional before initiating therapy.

Practical Use: Dosing, Missed Dose, Overdose

• Standard dosing: For most men, the recommended starting dose is 50 mg taken about one hour before sexual activity. The dose may be increased to 100 mg or decreased to 25 mg based on efficacy and tolerability. Do not exceed 100 mg per day.
• Missed dose: Sildenafil is taken only when sexual activity is anticipated. If a dose is missed because the intended activity does not occur, no further action is needed. Do not take an additional tablet later in the day.
• Overdose: Symptoms may include severe hypotension, prolonged erection, or intense headache. If overdose is suspected, seek immediate medical attention; supportive care, fluid resuscitation, and vasopressors may be administered as needed.

Precautions:

• Take the tablet with water; avoid excessive alcohol, which can impair erection and increase side‑effects.
• High‑fat meals can delay absorption; if rapid onset is required, a light meal is advisable.
• Patients with chronic kidney disease (eGFR <30 mL/min) or severe liver impairment should start at 25 mg and be closely monitored.

Buying Viagra Professional from Our Online Pharmacy

Patients in Hong Kong can obtain Viagra Professional through our online pharmacy. Our service offers several advantages:

• Affordable pricing: We source the medication near manufacturer cost‑plus rates, providing a price point that is typically lower than brick‑and‑mortar retail outlets.
• Verified quality: All tablets are procured from licensed overseas manufacturers that meet Good Manufacturing Practice (GMP) standards and are inspected by third‑party quality auditors.
• Guaranteed delivery: Orders are dispatched discreetly, with options for 7‑day express shipping or standard airmail (approximately 3 weeks). Packages are sealed in unbranded envelopes to protect patient privacy.
• Online‑only access: For patients who face limited availability in local pharmacies or who lack insurance coverage, our pharmacy broker model links you with reputable overseas suppliers while complying with Hong Kong import regulations.

Our platform operates as a pharmacy broker service, collaborating with licensed overseas pharmacies to ensure a secure and confidential supply chain. All transactions are encrypted, and customer support is available to answer product‑related inquiries.

FAQ

• Is Viagra Professional approved for use in Hong Kong?
  Yes, sildenafil tablets marketed as Viagra Professional meet the regulatory requirements of the Hong Kong Pharmacy and Poisons Board for the treatment of erectile dysfunction.

• Can I travel with Viagra Professional on an international flight?
  Yes, you may carry the medication in your personal luggage, provided it is in its original packaging with a clear label. Keep the supply within the allowable personal import limit (typically a 30‑day supply) and retain a copy of the pharmacy receipt.

• What does the tablet look like and how is it identified?
  The standard 100 mg tablet is round, blue‑colored, and embossed with “Viagra Professional” on one side and the dosage strength on the opposite side. In addition, a batch number and expiry date are printed on the film coating.

• Does Viagra Professional contain any allergens such as lactose?
  The formulation includes lactose as an inactive ingredient; therefore, individuals with lactose intolerance should discuss alternatives with their healthcare provider.

• How should I store Viagra Professional in Hong Kong’s humid climate?
  Store the tablets at room temperature (15–30 °C) in a dry place, away from direct sunlight and moisture. A sealed container inside a cabinet is suitable; avoid bathroom cabinets where humidity is high.

• Are there specific warnings for men of Asian ethnicity?
  Pharmacokinetic studies have shown slightly higher plasma concentrations of sildenafil in East Asian males compared with Western populations, possibly due to lower average body weight. Clinicians may consider initiating therapy at 25 mg in this demographic.

• Can I use Viagra Professional with alcohol?
  Moderate alcohol consumption (up to two standard drinks) does not typically impair sildenafil’s efficacy, but excessive intake can diminish the erectile response and increase the risk of hypotension and dizziness.

• What is the difference between the generic sildenafil and the brand‑name Viagra®?
  Both contain the same active ingredient—sildenafil citrate—and are bioequivalent, meaning they deliver comparable plasma concentrations when taken under similar conditions. The generic version, such as Viagra Professional, is generally less expensive due to the absence of brand‑specific marketing costs.

• Does the medication affect drug testing for employment or sports?
  Sildenafil is not a prohibited substance in standard occupational drug screens or most sports anti‑doping panels. However, certain elite sports organizations may require disclosure; athletes should consult their governing body’s regulations.

• Can I import a 90‑day supply of Viagra Professional for personal use?
  Hong Kong permits personal import of prescription medicines up to a 30‑day supply without a pharmacist’s intervention. Importing a larger quantity requires a licensed pharmacy and may be subject to additional customs documentation.

Glossary

Phosphodiesterase‑5 (PDE5) Inhibitor

A class of drugs that block the enzyme responsible for breaking down cGMP, thereby enhancing blood flow to the penis during sexual stimulation.

cGMP (Cyclic Guanosine Monophosphate)

A cellular messenger that mediates smooth‑muscle relaxation in the corpus cavernosum, essential for erection development.

Priapism

A prolonged and often painful erection lasting longer than four hours, which can lead to permanent tissue damage if not promptly treated.

Bioequivalence

A regulatory term indicating that two pharmaceutical products release the same amount of active ingredient into the bloodstream at a similar rate and extent.

⚠️ Disclaimer

The information provided about Viagra Professional is for general knowledge only. It does not replace professional medical consultation. All treatment decisions should be made under the supervision of a qualified healthcare provider. We assume all readers are responsible adults capable of making informed decisions about their health. Our online pharmacy offers access to Viagra Professional for individuals who may have limited availability through traditional pharmacies, prescription‑based insurance schemes, or who are seeking affordable generic alternatives. Always consult your doctor before starting, changing, or discontinuing any medication.