Viagra

Viagra (Sildenafil)

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Description

Viagra Uses and Indications:

Chemical Name SILDENAFIL (sil-DEN-a-fil)

VIAGRA is a prescription medication that has been developed to assist men in maintaining an erection after experiencing sexual stimulation, thus allowing them to continue enjoying intimate moments with their partner. The medication functions by enhancing blood flow to the penis, which promotes greater firmness to an existing erection and allows for the sustained maintenance of that firmness, leading to more pleasurable experiences.

It’s essential to note the term "existing" because taking Viagra will not cause an erection to occur spontaneously; rather, it serves to augment an erection that has already begun. Health Canada has approved the over-the-counter accessibility of this medication, making it simple for men to order generic Viagra online using a prescription from their healthcare provider.

Generic Viagra vs. Branded Viagra

Generic Viagra emerges as a worthy alternative to the branded version, particularly for those seeking to address erectile dysfunction. Studies indicate that generic Viagra provides nearly the same level of efficacy as its branded counterpart, and one of its most significant advantages is that it is more affordably priced. Patients can conveniently obtain generic Viagra using the same prescription they would receive for branded Viagra from their doctor.

The same safety guidelines and usage instructions apply to both generic Viagra and the branded version, ensuring that the generic formulation has also received approval from Health Canada for safety and effectiveness.

Fact Table

Formula

C22H30N6O4S

License

US FDA

Bioavailability

41%

Legal status

Rx-Only

Chemical Name

Sildenafil

Elimination half-life

3–4 hours

Dosage (Strength)

25mg, 50mg, 100mg

Pregnancy

Consult Doctor

Brands

Viagra

Protein binding

96%

PubChem CID

5212

MedlinePlus

a699015

ChEBI

9139

ATC code

G04BE03

DrugBank

DB00203

KEGG

D08514

Routes of administration

By mouth

Directions

Research indicates that upwards of 80% of men who order Viagra online or have their prescriptions filled at local pharmacies experience the positive intended effects of this medication, and this finding applies equally to those opting for the more cost-effective alternative of generic Viagra.

It is crucial to take VIAGRA exactly as directed by your healthcare provider. The appropriate dosage can vary significantly among individual patients, depending on their specific circumstances and how they respond to the medication. Generally, it is recommended to take your daily dose of VIAGRA about one hour prior to engaging in sexual activity with your partner. Please swallow the tablet whole with a full glass of water. Additionally, keep in mind that taking more than one dose in a 24-hour period is inadvisable, as it significantly heightens the risk of experiencing dangerously low blood pressure levels.

Furthermore, be aware that the exact time it takes for VIAGRA to exert its effects can differ greatly from one person to another. Typically, the onset time ranges from 30 minutes to 1 hour to feel its effects, a timing pattern that also applies to generic Viagra. It's worth noting that the medication may take longer to work if taken after a large meal, while it tends to take effect more quickly if consumed on an empty stomach.

Ingredients

Viagra Dosage Information

Patients can take VIAGRA with or without food, offering flexibility depending on individual preferences.

The most common starting dose for the majority of patients is a 50mg dose, typically taken approximately one hour before planned sexual activity. Some men may find that they can take it as soon as 30 minutes prior to sex, allowing it to take effect in time, while others might discover that taking it several hours beforehand works better for them—up to four hours before sexual activity is permissible.

Depending on individual responses and recommendations made by their doctor, the dosage may be increased to 100mg or decreased to 25mg. The maximum allowable dose is limited to once per day, and detailed dosage instructions will be included in the printed guidelines provided with your purchase, whether ordered online or filled at the pharmacy.

Cautions

VIAGRA may not be suitable for all men, particularly those with certain medical conditions that could contraindicate the use of this medication. It is important for patients to openly discuss the following medical conditions with their healthcare provider prior to initiating treatment with branded or generic Viagra. Before ordering Viagra, be prepared to disclose any of the following health concerns:

  • Current use of any nitrate medications
  • History of HIV/AIDS
  • Irregular heartbeat or other heart-related issues
  • Previous heart attack, stroke, or significant cardiovascular problems
  • High blood pressure or low blood pressure issues
  • Any penile abnormalities, including curvature or congenital defects
  • Known bleeding disorders
  • Retinitis pigmentosa or other eye conditions
  • Health concerns like leukemia or multiple myeloma
  • History of priapism (painful, prolonged erections)
  • Any significant kidney or liver diseases

It’s crucial to remember that men should never increase their dosage without first consulting their healthcare professional, to avoid potential health risks.

Side Effects

While VIAGRA aims to assist most patients in effectively addressing erectile dysfunction issues, it is essential to recognize the potential for undesirable side effects when taking this medication. All medications carry a risk for side effects, and Viagra is no exception. Many side effects experienced tend to be mild and transient; however, some could be more severe and necessitate immediate medical attention. It is advisable to consult with your doctor or another trusted healthcare provider promptly if you feel unwell while using Viagra.

Side effects can range from common to less common and may include:

  • Facial flushing
  • Headaches
  • Nasal congestion
  • Stomach discomfort following meals
  • Visual disturbances (e.g., blurred vision, changes in color perception)
  • Bladder discomfort
  • Cloudy or bloody urine
  • Dizziness or lightheadedness
  • Increased frequency of urination or painful urination
  • Diarrhea
  • Eye bleeding
  • Convulsive episodes (seizures)
  • Altered vision, double vision, or in severe cases, blindness
  • Blue-tinted vision
  • Prolonged, painful erections (priapism)
  • Eye irritation or inflammation
  • Anxiety or feelings of nervousness

It's important to note that other medications may interact with Viagra, potentially altering its effects. Therefore, using certain drugs concurrently with Viagra is generally discouraged. Detailed information regarding drug interactions will be provided in the medication guidelines included with your prescription, and patients should carefully review these documents and seek medical attention if they experience adverse effects while taking the medication—even if they are not taking other drugs simultaneously.

When used correctly, VIAGRA is both a safe and effective means of treating erectile dysfunction for men. Prior to beginning this medication, it is vital to converse with your healthcare provider to determine whether it is appropriate for your specific health needs.

Dr Conor Sheehy

About Dr. Conor Sheehy (Page Author)

Dr. Sheehy (BSc Molecular Biology, PharmD) serves as a clinical pharmacist with a specialization in cardiology, oncology, and outpatient care. He is a board-certified pharmacotherapy specialist (BCPS), bringing a wealth of experience from working directly with patients to optimize their medication therapies for the best possible outcomes, making him a key expert for our pharmacy.

IMPORTANT NOTE: The information provided above is for general awareness and educational purposes only. It is not intended to diagnose, treat, or replace professional medical or veterinary advice. Always consult your physician, pharmacist, or veterinarian regarding the safety, suitability, and proper use of any medication for yourself or your pet.