
Viagra (Sildenafil)









Description
Viagra Uses and Indications:
Chemical Name SILDENAFIL (sil-DEN-a-fil)
VIAGRA is a prescription medication meticulously formulated to assist men in achieving and sustaining an erection after sexual stimulation, thus allowing them to fully enjoy intimate moments with their partner. Its primary mechanism of action involves enhancing blood circulation to the penis, which promotes increased rigidity of an existing erection, enabling men to maintain that enhanced state for longer durations.
The emphasis on the word existing is critical to understanding how Viagra functions; it is essential to note that this medication does not induce an erection on its own. Instead, it amplifies an already present erection, providing the necessary support for sexual activity. Having received approval from Health Canada for over-the-counter prescription access, acquiring generic Viagra online is straightforward with a prescription from a qualified healthcare provider.
Generic Viagra Vs Branded Viagra
For those grappling with erectile dysfunction, generic Viagra presents a practical alternative to its branded counterpart, offering comparable effectiveness at a lower price point. The efficacy levels reported for generic Viagra are nearly indistinguishable from the branded tablets, and the convenience of obtaining it with the same prescription as branded Viagra makes it an attractive option for many men.
The same guidelines governing the use and safety of branded Viagra apply equally to generic Viagra, and the fact that generic versions have also received Health Canada's endorsement adds a layer of reassurance for consumers.
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
The overwhelming majority (over 80%) of men who choose to purchase Viagra online or fill their prescription at a local pharmacy experience the intended effects of the medication. This effectiveness extends to those opting for the more cost-effective generic Viagra alternative.
It is crucial to take VIAGRA precisely as directed by your healthcare provider. The appropriate dosage for each individual may vary based on their specific health condition and response to the medication. For optimal results, it is advisable to take your prescribed dose of VIAGRA around one hour before engaging in sexual activity with your partner. The tablet should be swallowed whole with a full glass of water, and it is essential to bear in mind that consuming more than one dose within a 24-hour period is discouraged, as this greatly elevates the risk of experiencing dangerously low blood pressure levels.
Moreover, it’s important to recognize that the onset time for VIAGRA to take effect can differ among individuals. Generally, it tends to take between 30 minutes to an hour for the effects to manifest, and this duration is similarly applicable to generic Viagra. Patients may notice that the onset of action is delayed after consuming a heavy meal. Therefore, taking VIAGRA on an empty stomach can accelerate its effects.
Ingredients
Viagra Dosage Information
VIAGRA can be taken with or without food, providing flexibility for users in their daily routines.
The typical recommended dose for most men is a 50mg tablet taken approximately 1 hour prior to anticipated sexual engagement. Some individuals may find that they can take it as soon as 30 minutes before the act, whereas others may prefer to consume it up to 4 hours beforehand to allow for maximum effectiveness.
The dosage may be adjusted based on personal response and the healthcare provider's recommendations, allowing for increased dosage up to 100mg or reduced to 25mg if necessary.
It is crucial to adhere to the maximum allowable dosage, which is once a day. Comprehensive information regarding dosage will be available in the accompanying guidelines that you receive when purchasing Viagra online or when you collect your prescription at the pharmacy.
Cautions
VIAGRA is not suitable for every man, often due to certain medical conditions that may contraindicate its use. It is highly recommended that patients discuss any existing medical conditions with their healthcare provider prior to starting either branded or generic Viagra. Prior to making a purchase, it's vital to address any of the following medical concerns:
- Current use of any nitrate medications
- Diagnosis of HIV/AIDS
- History of irregular heartbeat
- Coronary artery disease history
- Previous heart attack, stroke, or other cardiovascular conditions
- Issues with high or low blood pressure
- Penile defects or abnormalities, including conditions that result in curvature or congenital issues
- Bleeding disorders
- Retinitis pigmentosa diagnosis
- Conditions that lead to thickened blood or reduced blood flow, such as leukemia or sickle cell disease
- History of priapism
- Underlying heart or vascular diseases
- Severe kidney or liver dysfunctions
It is critical that patients refrain from adjusting their prescribed dosage without prior consultation with their healthcare provider to avoid adverse effects.
Side Effects
While VIAGRA provides significant benefits for the majority of individuals dealing with erectile dysfunction, there exists a possibility of experiencing undesirable side effects. Like any medication, Viagra in Canada has its associated risks, most of which are minor and temporary. However, some side effects can be serious and necessitate immediate medical attention. If you experience any adverse symptoms while taking Viagra, it is essential to contact your healthcare provider or a trusted medical professional without delay.
Side effects may include both common and infrequent occurrences, such as:
- Facial flushing
- Headaches
- Nasal congestion
- Gastrointestinal discomfort after meals
- Vision abnormalities (such as blurred vision or altered color perception and sensitivity to light)
- Painful bladder sensations
- Presence of cloudy or blood-tinged urine
- Dizziness
- Increased frequency of urination or painful urination
- Diarrhea
- Eye bleeding
- Seizures
- Reduced or double vision, in extreme circumstances leading to blindness
- A blue hue in your vision
- Extended, painful, or inappropriate erections (priapism)
- Eye redness, burning, or swelling
- Feelings of anxiety
Interactions with other medications can modify the effects of Viagra, and it is not advisable to utilize certain additional drugs concurrently with it. These potential interactions will be clearly outlined in the medication guidelines accompanying your prescription. It is crucial to thoroughly read this material and seek immediate attention if you experience any ill effects while using the medication, regardless of whether you are taking other drugs simultaneously.
When utilized correctly under medical supervision, VIAGRA stands as a reliable and effective option for treating erectile dysfunction in men. Before embarking on this treatment, it is imperative to have a detailed discussion with your healthcare practitioner to ensure it aligns with your health needs.
Dr Conor Sheehy
About Dr. Conor Sheehy (Page Author)
Dr. Sheehy (BSc Molecular Biology, PharmD) serves as a clinical pharmacist with a focus on cardiology, oncology, and outpatient care. He holds board certification as a pharmacotherapy specialist (BCPS). With extensive experience working collaboratively with patients to customize their medication regimens and therapy strategies for optimal health outcomes, Dr. Sheehy is a valued expert in his field.
IMPORTANT NOTE: The information provided above is intended for general awareness and educational purposes and should not be interpreted as medical advice for diagnosing, treating, or substituting professional medical or veterinary care. Always consult your physician, pharmacist, or veterinarian regarding the safety, suitability, and proper use of any medication for yourself or your pet.