
Viagra (Sildenafil)









Description
Viagra Uses and Indications:
Chemical Name SILDENAFIL (sil-DEN-a-fil)
VIAGRA is a prescription medication designed to assist men in achieving and maintaining an erection in response to sexual stimulation, allowing them to fully engage and enjoy intimate moments with their partners. The medication functions by enhancing blood flow to the penis, which ultimately promotes increased rigidity of an existing erection, providing the ability to hold that level of rigidity longer during sexual encounters.
It is critical to emphasize the importance of the term "existing" here; Viagra will not initiate an erection on its own but rather amplify an erection that is already present. Approved by Health Canada, this medication is accessible without a prescription, making it straightforward for men to order generic Viagra online with a legitimate prescription from their physician.
Generic Viagra Vs Branded Viagra
Generic Viagra presents a viable alternative to the branded variant, making it easier for men to combat the challenges of erectile dysfunction without straining their finances. Research indicates that generic Viagra offers nearly identical effectiveness as its branded counterpart, and one of the significant benefits is its lower price point, making it more accessible. Importantly, you can obtain generic Viagra using the same prescription provided by your healthcare professional for the branded version.
Such guidelines for safe usage and practices apply equally to generic Viagra just as they do for the branded option, and it is reassuring to know that generic Viagra has also received approval from Health Canada, ensuring its safety and efficacy.
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 vast majority (upwards of 80%) of men who choose to order Viagra online or have their prescriptions filled at local pharmacies successfully experience the desired benefits of the medication. This positive outcome extends to those opting for a more affordable alternative in generic Viagra as well.
It is crucial to take VIAGRA precisely as prescribed by your healthcare provider. The appropriate dosage for each individual will depend on their specific medical condition and their unique response to the medication. For optimal results, it is advisable to take your daily dose of VIAGRA approximately one hour before engaging in sexual activity. Always swallow the tablet whole, accompanied by a glass of water. Prior to purchasing Viagra, it's vital to be aware that exceeding one dose per day is strongly discouraged as it significantly raises the risk of severe hypotension.
Moreover, it's essential to understand that the time required to feel the effects of VIAGRA can vary among individuals. Typically, it takes anywhere from 30 minutes to one hour for the medication to take effect, and this duration holds true for generic Viagra as well. Patients may observe that the onset of action is delayed following a heavy meal. VIAGRA is processed more rapidly when consumed on an empty stomach.
Ingredients
Viagra Dosage Information
VIAGRA can be taken with or without food, providing flexibility in how you incorporate it into your routine.
The most commonly recommended dose for the majority of patients stands at 50mg, which should be taken approximately one hour before sexual activity. Some patients may find they can take it as quickly as 30 minutes prior to sexual engagement and still achieve the desired effects, while others may find that taking it up to 4 hours in advance works best for them.
Based on individual responses to the medication and under the guidance of a healthcare provider, the dosage may be adjusted to either 100mg or lowered to 25mg as necessary.
The maximum permitted dosage is once per day, and comprehensive information regarding dosing can be found within the printed guidelines that accompany your medication when you order Viagra online or pick up your prescription at the pharmacy.
Cautions
It's essential to recognize that VIAGRA may not be suitable for everyone. Certain medical conditions may preclude specific individuals from safely using this medication. Patients are strongly encouraged to discuss the following medical conditions with their healthcare provider prior to considering either branded or generic Viagra:
- If you are taking any nitrate medications
- HIV/AIDS diagnosis
- Irregular heartbeat issues
- Coronary artery disease history
- Having experienced a heart attack, stroke, or any previous heart conditions
- High blood pressure or low blood pressure concerns
- Penile abnormalities, such as a curved penis or congenital defects
- Existing bleeding disorders
- Diagnosis of retinitis pigmentosa
- Conditions resulting in thick blood or slowed blood flow, including leukemia, multiple myeloma, sickle cell disease, or thrombocythemia
- History of priapism
- Other heart or blood disorders
- Severe kidney or liver issues
Caution is warranted; under no circumstances should individuals ever attempt to increase their prescribed dose without direct consultation with their healthcare provider.
Side Effects
While VIAGRA is effective for most patients in addressing erectile dysfunction, it is important to be aware of potential side effects associated with its use. All medications, including Viagra, carry a risk of side effects, and while many are minor and temporary, some can be serious and necessitate immediate medical attention. If you experience any adverse effects while on Viagra, prompt communication with your doctor or healthcare provider is essential.
Common and less common side effects may include:
- Flushing of the skin
- Headaches
- Nasal congestion
- Stomach discomfort after eating
- Abnormal vision changes (such as blurred vision, altered perception of colors, or increased sensitivity to light)
- Bladder pain
- Cloudy or bloody urine
- Dizziness
- Increased frequency of urination or pain during urination
- Diarrhea
- Eye bleeding complications
- Seizures (convulsions)
- Decreased vision or double vision, with extreme cases potentially leading to blindness
- A blue tint perceived in your vision
- Prolonged, painful, or inappropriate penile erection (priapism)
- Redness, burning, or swelling of the eye
- Feelings of anxiety
Usage of certain other medications may also impact how Viagra works, and combining drugs while taking Viagra is not advised. Detailed information about potential drug interactions will be included in the guidelines that accompany your prescription. Be diligent and read these materials thoroughly, seeking immediate medical advice if you experience any harmful effects during the course of treatment, even if you are not taking any other medications simultaneously.
When used responsibly and as directed, VIAGRA is a helpful and safe method for addressing erectile dysfunction in men. Before initiating this medication, it is critical to consult with your doctor or healthcare professional to ensure it is the right option for your personal health needs.
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 ambulatory care. He’s a board-certified pharmacotherapy specialist (BCPS), and his extensive experience in working directly with patients to refine their medication and therapy plans for optimal results further establishes him as a vital expert in our pharmacy.
IMPORTANT NOTE: The information provided above is intended solely for general awareness and educational purposes. It is not a substitute for professional medical or veterinary advice. Always consult your physician, pharmacist, or veterinarian regarding the safety, suitability, and proper usage of any medication for yourself or your pets.