Are you Looking to Buy Viagra (Sildenafil) from PrescriptionPoint.

Viagra (sildenafil) 

Indications

Viagra is indicated for the treatment of erectile dysfunction (ED). 

Dosage and Administration

• Take Viagra approximately 1 hour before engaging in sexual activity. 
• Swallow the Viagra tablet whole with a glass of water. 
• Adjust the dosage based on effectiveness and toleration, with a maximum recommended dose of 100 mg and a minimum of 25 mg. 
• Do not take more than the prescribed dose. Avoid taking Viagra more than once within a 24-hour period. 

Mechanism of Action

Viagra, also known as Sildenafil Citrate, helps men get erections by stopping an enzyme called phosphodiesterase-5 (PDE5). When this enzyme is blocked, it allows another chemical called cyclic guanosine monophosphate (cGMP) to increase. This helps muscles relax and lets more blood flow into the penis when a man is sexually aroused, making it easier to get an erection. 

Contraindications

• Don’t take Viagra if you’re using medications that release nitric oxide, like organic nitrates or nitrites, because Viagra can make their blood pressure-lowering effects stronger. 
• Do not take Viagra if you have a known hypersensitivity to sildenafil or any component of the tablet. 

Side Effects

Common Side Effects: 

• Headache 
• Flushing 
• Indigestion 
• Nasal congestion 
• Dizziness 
• Visual disturbances (such as changes in color vision or blurred vision) 

Serious Side Effects:

• Sudden vision loss in one or both eyes (could be a sign of non-arteritic anterior ischemic optic neuropathy or NAION).
• Sudden hearing loss or decrease in hearing.
• Priapism (a prolonged and painful erection lasting more than 4 hours).
• Severe hypotension (especially if taken with other medications that lower blood pressure).

Precautions

• Don’t use Viagra if you shouldn’t be having sex due to heart problems. 
• Stop taking Viagra and get medical help right away if you suddenly lose vision in one or both eyes. 
• Stop taking Viagra and seek medical attention immediately if you suddenly have a decrease or loss of hearing. 
• Be careful when taking Viagra with alpha-blockers or blood pressure medications, as this can cause low blood pressure. 
• Higher doses of Viagra can lower your blood pressure, make you faint, and cause long-lasting erections. If you are taking strong CYP inhibitors (like ritonavir), you should take a lower dose of Viagra. 

Storage Instructions

Store Viagra at room temperature between 68°F to 77°F (20°C to 25°C) 

References

https://www.accessdata.fda.gov/drugsatfda_docs/label/2014/20895s039s042lbl.pdf