
Viagra (Sildenafil)









Description
Viagra Uses and Indications:
Chemical Name SILDENAFIL (sil-DEN-a-fil)
VIAGRA is a prescription medication uniquely formulated to assist men in achieving and sustaining an erection following sexual stimulation, ensuring that they can fully enjoy the intimate experience with their partner. The medication operates by enhancing blood flow to the penis, thus promoting greater rigidity to an existing erection and enabling men to maintain that level of rigidity during their intimate moments.
It is essential to underscore the significance of the word "existing," as taking Viagra will not automatically induce an erection; rather, it serves to amplify an erection that is already in progress. Approved by Health Canada for over-the-counter prescription access, VIAGRA can easily be ordered online with a valid prescription from a licensed physician, providing a convenient option for those seeking to enhance their sexual health.
Generic Viagra Vs Branded Viagra
Generic Viagra presents a cost-effective alternative to the brand-name version, making it accessible for men who are working to address erectile dysfunction. Clinical reports indicate that generic Viagra exhibits nearly identical efficacy to the branded tablets, and its lower price point is a significant advantage. Men can obtain generic Viagra with the same prescription their physician provides for the branded option, allowing for savings without compromising on quality.
The same usage guidelines and safety protocols apply to generic Viagra as they do to the branded version, affirming that the availability of generic Viagra has been duly approved by Health Canada, ensuring it meets necessary safety standards.
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 the vast majority of men, upwards of 80%, who order Viagra online or have their prescription filled at their local pharmacy experience the intended benefits of the medication. This also holds true for men who opt for a more economical route by choosing generic Viagra.
It is imperative to take VIAGRA strictly as prescribed by your healthcare professional. The appropriate dosage for each patient will vary based on their specific medical condition and individual response to the medication. Typically, it is advisable to consume your prescribed dose of VIAGRA approximately one hour before engaging in sexual activity with your partner. Swallow the tablet whole with a full glass of water, and it is crucial to note that exceeding one dose daily is inadvisable, as it significantly heightens the risk of experiencing dangerously low blood pressure.
Moreover, be informed that the time required to observe the effects of VIAGRA can differ from person to person. Generally, it takes between 30 minutes to 1 hour to take effect, which also applies to generic Viagra. Patients may find that the medication appears to take longer to become effective after consuming a heavy meal. Conversely, VIAGRA tends to work more efficiently when ingested on an empty stomach.
Ingredients
Viagra Dosage Information
VIAGRA can be taken with or without food, providing flexibility for the user.
The standard recommended dose for most individuals is 50mg, taken approximately 1 hour prior to planned sexual activity. Some may discover that they can take it as soon as 30 minutes before engaging in intimate activity, while others might prefer to take it up to 4 hours before to ensure it is effective.
The dosage may be adjusted to either 100mg or reduced to 25mg based on how you respond to the medication, under the guidance of your healthcare provider.
The maximum allowable dose is once a day, and you will find additional, detailed information regarding dosing in the printed guidelines accompanying your medication, whether you decide to order Viagra online or collect your prescription from a pharmacy.
Cautions
VIAGRA may not be suitable for every man, and often it is due to certain medical conditions that could prevent an individual from safely using this medication. Patients are encouraged to discuss the following medical conditions with their healthcare provider before taking either branded or generic Viagra. It may be essential to address any of the following medical conditions prior to purchasing Viagra:
- Use of any nitrate medications
- HIV/AIDS
- Irregular heartbeat issues
- Coronary artery disease history
- Past experiences of heart attack, stroke, or other heart-related conditions
- High or low blood pressure conditions
- Penile abnormalities, such as a curved penis or congenital defects
- Bleeding disorders
- Retinitis pigmentosa or similar eye disorders
- Conditions that lead to thickened blood or hinder blood flow, including leukemia, multiple myeloma, sickle cell disease, and thrombocythemia
- History of priapism (prolonged erections)
- Heart or blood disorders
- Severe kidney or liver abnormalities
Caution: Men should never increase their dosage without first consulting with their healthcare provider to avoid potential complications.
Side Effects
While VIAGRA effectively aids a majority of patients in overcoming their erectile dysfunction challenges, it is important to be aware that side effects may occur when taking this medication. All medications carry the risk of side effects, and Viagra in Canada is no exception. Most side effects are typically mild and temporary, but some may escalate into more serious concerns that warrant immediate medical attention. If you ever feel unwell while taking Viagra, do not hesitate to reach out to your doctor or a trusted healthcare professional.
Commonly reported as well as less frequent side effects include:
- Facial flushing
- Headaches
- Nasal congestion
- Stomach discomfort, particularly after meals
- Abnormal vision changes (blurred vision, altered color perception, heightened sensitivity to light)
- Bladder pain
- Cloudy or bloody urine
- Dizziness
- Increased urination frequency or discomfort during urination
- Diarrhea
- Possible eye bleeding
- Seizures
- Vision disturbances, including double vision or, in severe cases, temporary blindness
- A blue tint to vision
- Prolonged, painful, or inappropriate penile erection (priapism)
- Redness, burning sensation, or swelling of the eyes
- Feelings of anxiety
Other medications can influence how Viagra acts, and the concomitant use of certain drugs while on Viagra is generally discouraged. Detailed information regarding potential drug interactions will be provided in the medication guidelines accompanying your prescription. Always read this information thoroughly and seek medical assistance if any adverse feelings occur while taking the medication, even if you are not using other medications simultaneously.
When administered correctly, VIAGRA stands as a safe and effective solution for treating erectile dysfunction in men. Before proceeding with this medication, consult with your healthcare provider to ensure it aligns with your medical needs and lifestyle.
Dr Conor Sheehy
About Dr. Conor Sheehy (Page Author)
Dr. Sheehy (BSc Molecular Biology, PharmD) is a clinical pharmacist with a specialization in fields such as cardiology, oncology, and ambulatory care. He holds board certification as a pharmacotherapy specialist (BCPS), and his extensive experience in working closely with patients allows him to tailor their medication and therapy plans for optimal health outcomes, making him a noteworthy authority on the subject for our pharmacy.
IMPORTANT NOTE: The information provided above is for general understanding and educational purposes only. It is not intended to diagnose, treat, or act as a substitute for professional medical or veterinary advice. Always consult your physician, pharmacist, or veterinarian regarding the safety, appropriateness, and correct usage of any medication for yourself or your pet.