ViagraPfizer

Since becoming available in 1999, Viagra was the first ever prescription treatment for erectile dysfunction (ED). It’s estimated that over 30 million men worldwide have been successfully treated by this tablet since manufacturers, Pfizer, created it. This ED medication uses an active ingredient called sildenafil citrate which works by increasing the flow of blood to your penis, making it much easier for you to achieve an erection. The tablet should be taken 30 minutes before sex and can remain effective for up to 4 hours.

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Viagra Frequently Asked Questions

What are the benefits?

Since its approval for release, Viagra sildenafil has helped millions of men worldwide to fight the causes of impotence and enjoy a healthy sex life. When taken 30 minutes before sex, it will help to increase the blood flow to your penis, allowing you to achieve an erection more easily when sexually stimulated which will then allow you to perform intercourse.

How does Viagra work?

The active ingredient, sildenafil nitrate, which is known as a PDE5 inhibitor causes increased blood flow to the penis. An erection is then produced by a chain of actions involving signals from the nervous system and the release of chemical messengers within the penis tissue. One of these chemical messengers is known as cyclic GMP, which causes the blood vessels in the penis to widen. It does this by relaxing a thin layer of muscle found in the blood vessel walls, allowing more blood to enter the penis, causing the penis to become erect.

Cyclic GMP is naturally broken down by a different enzyme in the body called phosphodiesterase type 5. To make it easier for you to achieve an erection, the tablet inhibits the action of phosphodiesterase type 5, preventing it from breaking cyclic GMP so quickly. Blood flow to the penis is then increased and you will be able to achieve a better erection.

Who is suitable to take Viagra?

Men over the age of 18 who regularly suffer from impotence or erectile dysfunction are suitable to take this tablet. Men with the following health conditions would not be directed to take it:

  • Severe heart disorders such as unstable angina or severe heart failure
  • Recent recovery from a heart attack or stroke
  • Low blood pressure
  • Severely decreased liver function
  • Hereditary degeneration of the back of the eyeball, such as retinitis pigmentosa
  • Rare hereditary problems of galactose intolerance, Lapp lactase deficiency or glucose-galactose malabsorption

If you suffer from diabetes, high blood pressure, or high cholesterol, Levitra may be a more suitable treatment for you.

How do I take Viagra?

The capsules came in strengths of 25mg, 50mg and 100mg, which should be swallowed whole 30-60 minutes before sex. If you are taking this drug for the first time, you would be advised to take the 50mg dose first. You can then lower or raise your dosage depending on how your body reacts to the medication. We recommend consulting a doctor before changing your dosage. Do not take more than one tablet within a 24-hour period.

Viagra side effects

A common side effect of Viagra sildenafil is mild to moderate headaches and facial flushing, due to the change in blood pressure it causes. But these symptoms, if you experience them, normally disappear shortly after the capsule has been ingested. Less common side effects include blurry vision, upset stomach and nasal congestion. In very rare cases, men have reported dizziness, vertigo and a sudden loss of hearing, although this only affects a very small number of users.

How can I buy Viagra online?

IIf you decide to purchase Viagra, you will need to complete an online consultation form. This form, which only takes around 5 minutes to fill in, will then be checked by one of our team of doctors. If they decide that you are suitable to take the medication, they will issue you with a prescription. Your course of treatment will then be dispatched from our pharmacy in discreet packaging and will be delivered the very next day.

How long will it take to start working?

For the majority of men, it will start to work within 30 to 60 minutes. Before taking the tablet, avoid a high fat meal for quicker results. Foods that are high in cholesterol significantly slow down the body’s ability to digest the medication, making the active ingredient, sildenafil, less efficient.

How long does Viagra stay effective for?

Again, in most reported cases, Viagra lasts for 4 hours, however, this does not mean you will have a constant erection throughout this time period. It only starts to take effect when you become sexual stimulated. After climaxing, you penis will become flaccid like normal but you will gain an erection if you become sexually aroused during the 4-hour window. An important point to remember is the effects of this drug fluctuate from person to person.

What are the differences between the 3 dosages?

Here at Online Clinic, Viagra is available in 3 different dosages – 25mg, 50mg and 100mg. When a clinical study was carried out, over 60% of men on the 25mg dose said they achieved stronger erections and when it came to the 50mg, over 70% reported a better response. 85% of the participants taking the 100mg said the higher dosage helped them maintain a better erection.

25mg dosage – Being the lowest dosage of sildenafil, this is usually recommended to men aged 65 or over. Patients who have a long history of health problems or those who take alpha-blockers are advised to take this dose. First time buyers are often prescribed this too.

50mg dosage – Due to its higher success rate, this is the most commonly prescribed dosage among patients

100mg dosage – If you are fully healthy or the lower dosages are having little to no effect on your ability to get an erection, our UK doctors will likely prescribe this dose.

Download Patient LeafletViagra - Patient Information Leaflet

Dr Hilary Jones Dr Hilary Jones
OnlineClinic
Medical Advisor

"Discreet online clinics like OnlineClinic enable men to seek effective treatment for impotence."


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Dosages 25mg, 50mg,100mg 10mg, 20mg 2.5mg, 5mg 5mg, 10mg,20mg 10mg 50mg, 100mg,200mg
Effective within 30 minutes 30 minutes Immediately 15 minutes 15 minutes 15 minutes
Effective for up to 4 hours 36 hours 24 hours 5 hours 5 hours 5 hours