Viagra (Sildenafil)

Sildenafil belongs to a group of medicines called phosphodiesterase type 5 inhibitors. It is only taken before sexual activity. It works by increasing blood flow to the penis, helping men achieve an erection. Sildenafil takes 30 to 60 minutes to take effect. Many men can still achieve an erection up to five hours after taking it. Always read the patient information leaflet before use.
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Viagra (Sildenafil)

Sildenafil belongs to a group of medicines called phosphodiesterase type 5 inhibitors. It is only taken before sexual activity. It works by increasing blood flow to the penis, helping men achieve an erection. Sildenafil takes 30 to 60 minutes to take effect. Many men can still achieve an erection up to five hours after taking it. Always read the patient information leaflet before use.

  • Reviewed by GMC-registered clinicians
  • 100% genuine medication
  • Discreet delivery to your door
  • Fast online consultation
  • Next day delivery available
Order within 0.096881373842593d 2h 19m to receive your order by Thursday 1st October
  • Next day delivery available
  • Medication shipped to your door
  • Quick & Easy
  • GMC-registered doctors

Package Size

In Stock
Start Consultation

You will need to answer a few questions about your health before completing purchase of this item.

More Information

Can I buy Viagra (Sildenafil) online?

Yes, you can buy Viagra (Sildenafil) online from ProHealth. Before your order is dispensed, you will need to complete an online consultation. This is then checked by a registered doctor. This process ensures Sildenafil is safe and suitable for you. If your consultation is approved, your order is delivered to you.

Do I need a prescription for Viagra (Sildenafil)?

Yes, Viagra (Sildenafil) requires a prescription. All orders with us must go through an online clinical consultation, and a registered doctor will decide if the medication is appropriate for you.

What is Viagra?

Sildenafil belongs to a group of medicines called phosphodiesterase type 5 inhibitors. It is only taken before sexual activity. It works by increasing blood flow to the penis, helping men achieve an erection. Sildenafil takes 30 to 60 minutes to take effect. Many men can still achieve an erection up to five hours after taking it. Always read the patient information leaflet before use.

What Causes Erectile Dysfunction?

Erectile dysfunction has several causes and is more common in men over 40. Occasional difficulties with erections are normal and may be due to stress, tiredness, anxiety, or excessive alcohol consumption. Medical conditions can also contribute to erectile dysfunction, causing persistent issues. These may include blood vessel problems, high blood pressure, high cholesterol, diabetes, spinal injuries, or nerve damage. Treating the underlying condition is important; however, Sildenafil can help provide effective treatment for erectile dysfunction itself.

How does Sildenafil work?

For an erection to occur, sexual arousal is required. During stimulation, nerve signals cause the muscles in the penis to relax, allowing blood to flow in. This expands the penis and causes an erection. When erectile dysfunction is caused by restricted blood flow, Sildenafil helps by widening the blood vessels. This allows more blood to reach the penis, making it easier to achieve and maintain an erection when aroused. Sildenafil will only work when you are sexually stimulated.

How is Sildenafil Taken?

Sildenafil is available as tablets and liquid. Tablets are to be swallowed whole with water. The standard dose is 50mg, taken about an hour before sex. For best results, take it on an empty stomach as food may delay its effects. If 50mg is ineffective or does not last as long as expected, speak to a prescriber to see if a higher dose is suitable.

What is the recommended dosage?

Sildenafil comes in different strengths, from 25mg to 100mg. Many men find that 50mg is effective, but the dose can be increased to 100mg if needed. Some men may experience side effects with 50mg and prefer to lower their dose to 25mg. A prescriber can help determine the right dose for you. Only one dose of Sildenafil should be taken in a 24-hour period.

What side effects can it have?

Like all medicines, Sildenafil can cause side effects. These are usually mild, but speak to a healthcare professional if any of the following persist: Hot flushes or facial redness Headaches Dizziness Nausea or indigestion Blurry vision Blocked nose These effects occur because Sildenafil widens blood vessels in other parts of the body. Some side effects are more serious. Seek medical help immediately if you experience: Chest pain A painful or prolonged erection that lasts over four hours Sudden vision loss Serious skin reaction Seizures

A doctor's overview of the side effects of this medication and how to manage them:

Dr. Irfan Siddique provides a simple explanation of the common side effects of the medication and how you can manage them: Viagra is a brand name for generic medication Sildenafil, used for erectile dysfunction. Common side-effects may include hot flushes, dizziness, vision changes, blocked nose, or headaches. If you experience any of Viagra-induced side effects, it is recommended to consult a healthcare professional. Moreover, Viagra can interact with many other medications (like nitrates) and cannot be taken if diagnosed with certain conditions, such as angina, stroke, kidney disease, etc. So, always consult with a healthcare professional before starting Viagra.

What warnings does Viagra (Sildenafil) come with?

Sildenafil is not suitable for everyone. At ProHealth, a prescriber will assess your consultation to determine if it is right for you. You may not be able to take Sildenafil if you: Use nitrates for chest pain Use recreational drugs known as poppers Have heart or blood vessel disease, including low blood pressure, angina, or a previous heart attack Have had a stroke Have liver or kidney disease Have a stomach ulcer or another condition that causes bleeding Have sickle cell disease Have ever had bone marrow or blood cancer Have loss of vision Have any disease or deformity of the penis Are taking other medications that interact with Sildenafil Have previously had a reaction to Sildenafil or another medication Avoid grapefruit juice while taking Sildenafil as it can increase the amount of the medicine in your blood, raising the risk of side effects. Drinking more than 14 units of alcohol per week can also make it harder to achieve an erection. To get the best results from Sildenafil, avoid alcohol before sexual activity.

Medically Reviewed By:

Dr Rajesh Patel
MBBS, MRCGP
Dr Rajesh Patel is a GMC-registered doctor specialising in men's health and sexual medicine. He reviews the content for our men's, women's and sexual health treatments.
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