Viagra, a drug from Pfizer, is based on the active substance sildenafil. Viagra was the first oral drug to receive approval as a drug to increase potency back in 1998 and remains to this day the most effective drug of the PDE5 group of drugs prescribed for erectile dysfunction.
The composition of Viagra includes the active substance sildenafil, as well as auxiliary substances. One tablet of the drug contains 50 or 100 mg of the active ingredient. Depending on this, the price of Viagra is determined.
Where to Get Viagra Generic (Sildenafil) 100 mg Online ?
| Drug Name: | Viagra(Sildenafil) | ||
|---|---|---|---|
| Tablet Strength: | 100mg × 360 tablet | ||
| Best Price: | $ 323.95 | Per Pill | $ 0.90 |
| Where to Get ? |
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Sildenafil is a strong selective inhibitor. The active component does not directly relax the isolated male corpus cavernosum but leads to an increased effect of the release of nitric oxide (this is a natural process during an erection). Thus, with sexual stimulation, the relaxation of smooth muscle tissue improves, and blood flow to the penis increases. As a result, a normal erection is ensured.
It is necessary to understand that it is not enough to buy Viagra, take a pill, and wait for powerful sexual function. For sildenafil to work, you need to stimulate arousal.
In what cases is Viagra prescribed?
Doctors recommend taking the drug for men with erectile dysfunction, which manifests itself in difficulty achieving or maintaining 
penile erection for normal intimate intercourse.
Contraindications to taking the drug
Although Viagra is sold without a prescription, it is strongly not recommended to self-prescribe this medication. There is a large list of contraindications for use:
- severe renal failure;
- severe pathologies and diseases of the cardiovascular system;
- retinitis pigmentosa, which arises due to a genetic predisposition;
- minor age;
- hypersensitivity to the active substance or other components of the drug.
The drug is not prescribed to women, men with lactose intolerance or lactase deficiency. It is recommended to take Viagra with caution in patients with anatomical deformation of the penis, gastrointestinal diseases, and liver dysfunction.
Before taking Viagra, be sure to consult your doctor. Self-medication can pose serious risks to your health.
Features of interaction with other drugs
Sildenafil can have dangerous effects when combined with certain medications. For example, Viagra and PDE5 inhibitors should not be combined because symptomatic hypotension may occur. If the patient takes NO donors, organic nitrates, or nitrites regularly or periodically, sildenafil can enhance the hypotensive effect of nitrates.
As for co-administration with other drugs for the treatment of erectile dysfunction, the safety of such therapy has not been thoroughly studied. If your doctor recommends you buy Viagra, treat yourself with this drug for now.
Viagra - administration and dosage
The drug is taken orally with or without the tablet with clean water. Immediately after opening the blister, you must drink the medicine.
Most patients are prescribed 50 mg of the drug an hour before the intended intimate act. Based on data on the tolerability of the drug and its effectiveness, the doctor may increase the dosage to 100 mg at a time or reduce it to 25 mg. You can take a maximum of 1 tablet per day. Please note that fatty foods slow down the effect of the active substance.
The dosage is determined, taking into account the individual condition of the patient. For example, if the kidneys or liver function is impaired, the doctor prescribes 25 mg per day. For older men, no dose adjustment based on age is provided. In any case, do not treat erectile function on your own. You need to know exactly how to take Viagra so that it works correctly and without harm.
Possible side effects
The following side effects may occur when using Viagra:
- Headache
- Facial redness
- Runny nose
- Visual impairment
However, they usually resolve quickly and do not require special treatment.
For many men, Viagra has become a real salvation, restoring confidence in their sex life. Although effective, it is important to be aware of possible side effects and follow your doctor's recommendations. Viagra is not just a pill, it is a chance for a new, rich sex life.
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Frequently Asked Questions
What makes sildenafil different from other PDE5 inhibitors?
Sildenafil is often chosen when a patient wants a well-established treatment with a predictable onset window. It is usually discussed in relation to timing before intercourse, cardiovascular safety screening, and how food or alcohol may affect response.
How should Viagra be timed around meals?
Many patients are advised that a very heavy or high-fat meal may slow the onset of effect. In practice, clinicians often review meal timing, hydration, and the patient's previous experience so the medication can be used more effectively.
Why does sexual stimulation still matter when taking Viagra?
Sildenafil supports the physiologic pathway involved in erection, but it does not create arousal by itself. A normal sexual response still depends on stimulation, emotional comfort, and adequate blood flow.
Can Viagra be used every day?
That depends on how often the patient is sexually active, other medications, and the physician's treatment plan. Some men use sildenafil only when needed, while others may be better candidates for a different regimen.
What are the most common reasons Viagra does not work well at first?
Suboptimal timing, anxiety, alcohol use, an inadequate dose, or severe vascular disease are common reasons. Physicians usually review these factors before deciding whether the medication itself is the issue.
Does Viagra treat the cause of erectile dysfunction?
It helps manage symptoms, but the underlying cause may involve diabetes, vascular disease, hormonal imbalance, pelvic surgery, medication side effects, or psychological factors. A full evaluation remains important.
Who needs caution before taking sildenafil?
Men using nitrates, those with unstable heart disease, recent major cardiac events, or certain eye and blood-pressure conditions need careful medical review before using the drug.
How long does the effect of Viagra usually last?
The response window is often discussed in terms of several hours rather than an all-day effect. The exact duration depends on metabolism, dose, age, and overall health.
Can side effects be reduced?
Many side effects are managed by reviewing dose, spacing, hydration, alcohol intake, and drug interactions. A physician may also decide whether another PDE5 inhibitor is more appropriate.
Why is prescription review important before ordering Viagra online?
Prescription review helps confirm the diagnosis, screen for contraindications, and reduce the risk of dangerous interactions. This site presents medication information but does not sell prescriptions.
Important Medical Guidance
Viagra therapy should always be used under supervision of a licensed physician. Patients considering Viagra should undergo a clinical evaluation to determine cardiovascular safety and possible drug interactions.
Prescription Only
This medication is intended to be used only when prescribed by a qualified healthcare professional. The website provides educational information and does not issue prescriptions.
When to Seek Urgent Medical Help
If symptoms such as chest pain, sudden vision changes, fainting, or prolonged erection lasting more than four hours occur, immediate medical assistance is required.
Who Should Avoid This Medication
Individuals taking nitrate medications, certain cardiovascular treatments, or those with unstable heart disease should avoid this therapy unless specifically advised by a doctor.
Medical Review
This informational content has been prepared for educational purposes and reflects commonly accepted urological clinical guidance regarding the safe use of viagra.
Sources
- Clinical pharmacology references on PDE‑5 inhibitors
- Urological treatment guidelines
- Peer‑reviewed sexual medicine research
Clinical Reference Topics
- American Urological Association guidance on erectile dysfunction evaluation
- Patient medication counseling for sildenafil use and interaction review
- Prescription-only assessment for cardiovascular safety and nitrates
Editorial Review
This medication page has been reviewed by the Urological Health Center editorial team for clarity, prescription-only positioning, and consistency of the treatment information presented on this page.
Editorial rating: 5/5
Reviewer: Urological Health Center Editorial Team