Viagra (Sildenafil)

Prescription Required
Brand
Dose Size & Price Qty
25mg
50mg
100mg
Generic
Dose Size & Price Qty
25mg
50mg
100mg
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Fact Table

Fact Table
Formula C22H30N6O4S
License US FDA
Bioavailability 41%
Legal status US: RX Only
Chemical Name Sildenafil
Elimination half-life 3–4 hours
Dosage (Strength) 25mg, 50mg, 100mg
Pregnancy Consult Doctor
Brands Viagra and Revatio
Protein binding 96%
PubChem CID 5212
MedlinePlus a699015
ChEBI 9139
ATC code G04BE03
DrugBank DB00203
KEGG D08514
Routes of administration By mouth (tablets)

Viagra is an erectile dysfunction treatment medication available by prescription and used by men to help them achieve an erection when intimate with a partner. The active ingredient in the medicationSildenafil is a vasodilator that works to improve blood flows into the corpus cavernosa of the penis when a man is sexually stimulated. It is a reliable medication in that regard, and men who receive the correct dosage and use it as indicated in their prescription can use it to overcome erectile dysfunction. Buy Viagra online from Canpharm and get the best Viagra price.

What is Erectile Dysfunction?

Erectile dysfunction (ED), also known as impotence, is a condition characterized by the inability to achieve or maintain an erection sufficient for sexual activity. It is a common sexual health problem that can affect men of all ages, although it becomes more prevalent with increasing age.

Directions

Take one Viagra pill with water 30 minutes to 1 hour before you foresee being intimate with your partner. The standard dosage is 50mg, but your dosage may be increased up to 100mg or decreased to 25mg depending on your response to the medication.

Tips for Taking Viagra

  1. Always use Viagra as directed by your doctor. He or she will instruct you on how much and when to take Viagra.
  2. Set a good mood. You cannot simply take Viagra and expect to get an erection. For it to function, you must be sexually excited.
  3. Take it slow. In most cases, Viagra begins to function in 30 to 60 minutes. It can be taken up to 4 hours before engaging in sexual activity. Therefore, there is no need to rush.
  4. Consume wisely before beginning. You may take Viagra either with or without meals. It can take a bit longer for Viagra to start functioning if you take it just after a high-fat meal (such as a cheeseburger and fries).
  5. Limit your use of Viagra to once per day. Call your doctor or get straight to the emergency department of the closest hospital if you accidentally take too much Viagra.

Ingredients

The active ingredient in Viagra is Sildenafil.

Cautions

Patients should discuss the following medical conditions with their healthcare professional before taking Viagra:

  • History of liver or kidney disease
  • Heart disease
  • Poor cardiac health
  • Irregular heartbeat
  • High or low blood pressure
  • Blood circulation problems
  • Retinitis pigmentosa or vision loss/blindness
  • Stomach ulcers
  • Pulmonary veno-occlusive disease
  • Blood cell disorders like sickle cell anemia or multiple myeloma
  • Peyronie's disease

Do not exceed your Viagra dosage as specified by your physician, serious health risks are possible, and taking excess medication will not result in enhanced effectiveness.

For use with ages 18 and up.

Interactions

Negative drug interactions may occur between the Viagra pill and other Rx or OTC medications, including rosuvastatin, duloxetine, apixaban, tamsulosin, fluticasone nasal, empagliflozin, furosemide, escitalopram, atorvastatin, pregabalin, metoprolol, montelukast, budesonide, formoterol, alprazolam, rivaroxaban, cetirizine.

Let your doctor know of all medications you are currently taking before receiving a prescription and going to buy Viagra online.

Side Effects

Side effects from using Viagra may occur, and some users may have allergic reactions or breathing difficulties when they use this medication. If Viagra side effects are experienced, you may want to stop use and meet with your doctor again to discuss ED treatment medication alternatives.

Common side effects:

  • Headache (experienced by around 16% of users)
  • Facial flushing (affects around 10% of users)
  • Indigestion and upset stomach
  • Nasal congestion
  • Dizziness and lightheadedness
  • Visual disturbances (rarely)

Remember, these are not exhaustive lists, and it's important to consult with a healthcare professional for personalized advice and guidance. If you prefer, you may contact the U.S. Food and Drug Administration (FDA) directly. Visit www.fda.gov/MedWatch or call 1-800-FDA-1088. For complete details about Viagra, please refer to Patient Information.


Frequently Asked Questions about Viagra


How Long Does Viagra Last?

Viagra typically lasts between four to eight hours with the exact duration depending on factors such as dosage and metabolism. Note that if your erection lasts more than six hours, you should call your doctor.


What Does Viagra Do?

Viagra helps with achieving and maintaining an erection while aroused. It does this by blocking an enzyme called PDE5, which itself reduces blood flow to the penis. It does not cause arousal, requiring sexual stimulation to work properly.


How to Use Viagra for Best Results?

Take Viagra up to an hour before sexual activity. Avoid consuming a high-fat meal before taking it, as it may delay its effects. Avoid alcohol and stress which can impair its effectiveness, and remember that sexual stimulation is required for it to work.


How Long Does It Take for Viagra to Work?

Typically, Viagra starts working within 30 minutes of taking it, but can vary from person to person, sometimes taking up to an hour for results.


Is Viagra Over the Counter?

No, Viagra is not available over the counter without a prescription and a doctor's approval. You will need to consult with a healthcare professional who can evaluate your health and determine if Viagra is suitable for you.


What Happens if a Woman Takes Viagra?

Viagra is designed for men and is therefore unsuitable for women. However, there is a separate medication called Addyi (flibanserin) that is specifically approved to treat low sexual desire in women that haven't had menopause yet.


How Long After Taking Viagra Can You Drink Alcohol?

Heavy drinking should be avoided when taking Viagra, as it can interfere with its effects and amplify it side effects. It (alcohol) can cause dizziness, drowsiness and low blood pressure. 1-2 drinks are safe, but anything more than that puts you at risk.


How Often Can You Take Viagra?

It is highly recommended that Viagra only be taken once per day (24 hours) at most. Taking it multiple times in a day lead to an erection that lasts 4 hours and more, which is a medical emergency as it damages the penis.


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