
Viagra (Sildenafil)









Description
Viagra Overview and Uses:
Chemical Composition: SILDENAFIL (sil-DEN-a-fil)
VIAGRA is a prescription-based pharmaceutical designed specifically to aid men in achieving and sustaining an erection after sexual arousal. By amplifying blood circulation to the penis, it enhances the firmness of an existing erection, enabling men to relish intimate encounters with their partners. It is essential to understand that Viagra does not spontaneously cause an erection; it merely intensifies an erection that is already present.
Viagra has gained approval from Health Canada, allowing men to conveniently order it online with an appropriate prescription from a licensed healthcare provider, thus providing a discreet way for individuals to address erectile dysfunction.
Generic Viagra versus Brand Name Viagra
For men battling erectile dysfunction, generic Viagra constitutes a widely accepted alternative to its branded equivalent. Clinical studies demonstrate that generic Viagra exhibits a similar effectiveness to its branded version, rendering it an appealing choice for many. The affordability of generic Viagra, coupled with the ease of obtaining it under the same prescription, significantly boosts its popularity. Importantly, generic Viagra is also endorsed by Health Canada, affirming its safety and efficacy.
Fact Sheet |
|
Structural Formula |
C22H30N6O4S |
Regulatory Approval |
US FDA |
Bioavailability Rate |
41% |
Legal Classification |
Prescription Only |
Chemical Identifier |
Sildenafil |
Half-Life |
3–4 hours |
Dosage Forms |
25mg, 50mg, 100mg |
Considerations During Pregnancy |
Consult Your Physician |
Brand Names |
Viagra |
Protein Affinity |
96% |
PubChem Reference |
5212 |
MedlinePlus Identifier |
a699015 |
ChEBI ID |
9139 |
ATC Classification |
G04BE03 |
DrugBank ID |
DB00203 |
KEGG Identifier |
D08514 |
Administration Route |
Oral |
Usage Guidelines
Statistical evidence suggests that over 80% of men who order Viagra online or have their prescriptions filled at a pharmacy attain the desired effects of the medication. Similar efficacy rates have been reported for generic Viagra, bolstering its reputation as an effective treatment option for erectile dysfunction.
It is imperative to follow the prescribed dosage as directed by a healthcare provider. The recommended administration time for Viagra is approximately one hour prior to engaging in sexual activity. The tablet should be swallowed whole with a full glass of water, and it is essential not to exceed one dose within a 24-hour period to avoid adverse effects, including significant drops in blood pressure.
Onset of action may differ among patients, typically requiring between 30 minutes to one hour to effectively work. Taking Viagra on an empty stomach is likely to yield faster results, while consuming it with a heavy meal may delay its effectiveness.
Dosage Details
Recommended Viagra Dosage
VIAGRA can be ingested with or without food.
The standard recommended dose for the majority of patients is 50mg, ideally taken about one hour before sexual intercourse. Some individuals may find it effective as little as 30 minutes prior, while others may need to wait up to 4 hours for full effect.
Dosing adjustments may be required, with options to increase to 100mg or decrease to 25mg based on individual response and professional medical advice. The maximum recommended dosing frequency is once daily. Complete dosage instructions will be included in the guidelines provided with the medication upon procurement.
Important Precautions
VIAGRA might not be appropriate for every man, particularly for those with certain pre-existing health conditions. It is essential for individuals to discuss the following medical history with their healthcare provider before using Viagra:
- Current use of nitrate medications
- Conditions such as HIV/AIDS
- History of irregular heartbeats
- Coronary artery disease
- Previous heart attack or stroke
- High or low blood pressure
- Physical deformities of the penis
- Bleeding disorders
- Retinitis pigmentosa
- Conditions that may lead to thickened blood
- Priapism history
- Severe liver or kidney issues
It is critical to refrain from increasing your dosage without first consulting with your healthcare provider.
Possible Side Effects
While many patients find VIAGRA beneficial for treating erectile dysfunction, like any medication, it may present potential side effects. Although most side effects are mild and transient, some may be severe and necessitate immediate medical attention. It is crucial to reach out to a healthcare provider if you encounter any adverse effects following Viagra intake.
Common and less frequent side effects may consist of:
- Facial flushing
- Headaches
- Nasal congestion
- Stomach upset
- Visual disturbances (such as blurred vision or light sensitivity)
- Increased urination
- Dizziness
- Diarrhea
- Painful or prolonged erections (priapism)
Patients should also remain mindful that potential drug interactions can alter Viagra's effects. Comprehensive information regarding possible interactions will be included in the medication guidelines. Always consult a healthcare provider regarding any health changes or other medications in use.
When appropriately used and under medical supervision, VIAGRA can represent an effective and safe method for alleviating erectile dysfunction in men. Always consult your physician before initiating any new medication to ascertain its suitability for you.
Dr. Conor Sheehy
About Dr. Conor Sheehy (Page Author)
Dr. Sheehy (BSc Molecular Biology, PharmD) is a clinical pharmacist with expertise in cardiology, oncology, and outpatient care. As a board-certified pharmacotherapy specialist (BCPS), he provides tailored medication management to ensure optimal therapeutic outcomes for his patients. Learn More...
IMPORTANT NOTE: The information presented is meant for general awareness and educational intentions only. It is not designed to diagnose, treat, or replace professional medical counsel. Always consult your healthcare provider concerning the safety, appropriateness, and proper utilization of any medications.