Attribute Details
Generic Name Sildenafil
Strength 100 mg
Form Oral tablet
Mechanism Phosphodiesterase type 5 inhibitor
Learn More

Chemical Structure

Sildenafil, the active component of Viagra Professional, belongs to the category of phosphodiesterase type 5 inhibitors. The molecule is characterized by a pyrimidine core attached to a sulfonamide group and a piperazine ring. This structure is critical for its binding affinity and specificity to the enzyme.

The molecular weight of sildenafil is approximately 474.58 g/mol. Its structure allows the inhibition of cyclic GMP degradation, promoting increased blood flow to specific areas, particularly the corpus cavernosum of the penis. This biochemical interaction underpins its therapeutic use in erectile dysfunction.

Each sildenafil molecule contains multiple nitrogen atoms, providing necessary pharmacokinetic properties. The sulfonamide group enhances water solubility, optimizing absorption and bioavailability when administered orally.

Dosage Information

Viagra Professional comes in multiple dosages, typically ranging from 25 mg to 100 mg. The starting dose is often 50 mg, adjusted based on efficacy and tolerance. The maximum recommended frequency is once per day.

Administration should occur approximately one hour before anticipated sexual activity. Food can delay absorption, thus affecting onset time. High-fat meals may significantly alter its bioavailability.

Adjustment of dosage might be necessary for specific populations, such as the elderly or individuals with renal or hepatic impairments. Such adjustments ensure both efficacy and safety, minimizing potential adverse reactions.

Viagra Professional Contraindications

Specific contraindications exist for Viagra Professional 100 mg. Patients with hypersensitivity to sildenafil or any of its components must avoid this medication. Concurrent use with nitrates, commonly prescribed for angina, is contraindicated due to the risk of severe hypotension.

Conditions such as severe hepatic impairment, recent history of stroke or myocardial infarction, and certain retinal disorders necessitate careful evaluation. Consulting healthcare professionals is crucial for individuals with these medical backgrounds.

Considerations include current medications that could potentially interact with sildenafil, leading to undesirable effects. Such interactions highlight the importance of comprehensive patient history assessment before prescription.

Viagra Professional Disposal

Proper disposal of Viagra Professional ensures environmental safety. Unused or expired tablets should be returned to pharmacy take-back programs when available. If such options are unavailable, following FDA guidelines for drug disposal is advised.

Tablets should not be flushed down the toilet unless instructed. Disposal in household trash requires mixing with an unpalatable substance, sealing in a container to prevent accidental ingestion.

Proper storage in a cool, dry place away from light extends the medication’s shelf life, maintaining its efficacy until expiration. Patients must ensure secure storage, especially away from children and pets.

Adverse Effects

Common adverse effects of Viagra Professional 100 mg include headache, flushing, and nasal congestion. These symptoms often resolve spontaneously and are dose-dependent.

More serious side effects, such as priapism or sudden vision loss, require immediate medical attention. Such events are rare but underscore the importance of adhering to prescribed dosages and guidelines.

Monitoring for potential side effects during initial use is advisable. This vigilance assists in promptly addressing any undesirable reactions, ensuring continued safe use.

Viagra Professional Over The Counter

Viagra Professional is typically available by prescription only. This status ensures healthcare professionals evaluate patient suitability before use, reducing risk of misuse or adverse reactions.

While some regions explore over-the-counter availability, stringent guidelines must accompany such transitions. Safe dispensing practices and patient education are critical components in these considerations.

The regulatory environment surrounding sildenafil aims to balance accessibility with safety, supporting effective treatment of erectile dysfunction while minimizing potential risks.

  • Mechanism of Action: Inhibition of PDE5 enzyme
  • Typical Use: Erectile dysfunction treatment
  • Common Side Effects: Headache, flushing
  • Administration Advice: Oral intake, once per day

Data origin: