Buy Sildenafil UK Without Prescription
Buy Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension.[4][8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud’s phenomenon.[9] It is unclear if it is effective for treating sexual dysfunction in females.[8] It can be taken orally (swallowed by mouth), intravenously (injection into a vein), or through the sublingual route (dissolved under the tongue).[8][10] Onset when taken orally is typically within twenty minutes and lasts for about two hours.[8]
Common side effects include headaches, heartburn, and flushed skin.[8] Caution is advised in those with cardiovascular disease.[8] Rare but serious side effects include vision problems, hearing loss, and prolonged erection (priapism) that can lead to damage to the penis.[8] Sildenafil should not be taken by people on nitric oxide donors such as nitroglycerin, as this may result in a serious drop in blood pressure.[8]
Key facts
- It usually takes 30 to 60 minutes for sildenafil to work for erectile dysfunction. You can take it up to 4 hours before you want to have sex.
- Taking sildenafil alone will not cause an erection. You need to be sexually excited for it to work.
- The most common side effects are headaches, feeling sick, indigestion, and dizziness. Many people have no side effects or only mild ones.
- It can be dangerous to take sildenafil if you also take medicines called nitrates (often given for chest pain). The combination can cause a dangerous fall in your blood pressure. If you’re not sure if you’re taking a nitrate, ask your doctor or pharmacist.
- Do not drink grapefruit juice if you’re taking sildenafil (Revatio) for pulmonary hypertension. It affects the way the medicine works.
How should I use this medication?
Take this medication by mouth with a glass of water. Follow the directions on the prescription label. The dose is usually taken 1 hour before sexual activity. You should not take the dose more than once per day. Do not take your medication more often than directed.
Talk to your care team about the use of this medication in children. This medication is not used in children for this condition.
Overdosage: If you think you have taken too much of this medicine, contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
What if I miss a dose?
This does not apply. Do not take double or extra doses.
What may interact with this medication?
Do not take this medication with any of the following:
- Nitrates, such as amyl nitrite, isosorbide dinitrate, isosorbide mononitrate, nitroglycerin
- Riociguat
- Vericiguat
This medication may also interact with the following:
- Bosentan
- Certain medications for blood pressure

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