Sildenafil citrate, commonly known by the brand name, is a prescription-only medicine used to treat erectile dysfunction (ED) in adult men. It works by improving blood flow to the penis, helping to achieve and maintain an erection during sexual activity.

Dosage and Administration

Sildenafil is available in 25mg, 50mg, and 100mg strengths.

• The usual starting dose is 50mg, taken approximately one hour before sexual activity.
• Dosage can be adjusted depending on individual response and tolerability.
• Take only one tablet in 24 hours, with or without food.
• Avoid grapefruit juice, as it can increase the risk of side effects.
• A high-fat meal may delay onset of action.

Effectiveness

Sildenafil has been shown to be effective in up to 80% of men with ED, with effects typically noticeable within 30 to 60 minutes, and lasting for up to 4–5 hours.

Side Effects

Common side effects include:

• Headache
• Flushing
• Nasal congestion
• Indigestion

Less common but serious effects include visual disturbances, hearing changes, or prolonged erections. Seek medical attention if severe or persistent side effects occur.

Contraindications

Sildenafil should not be used by those:

• Taking nitrates for chest pain
• With severe heart or liver conditions
• Under 18 years of age
• With certain medication interactions (e.g. alpha-blockers, antifungals, antibiotics)

Interactions

Inform your doctor of all medications and supplements before use. Interactions may occur with:

• Nitrates
• Alpha-blockers
• Some antibiotics and antifungal medicines

Alcohol and Heart Conditions

Avoid excessive alcohol while taking sildenafil, as it can lower blood pressure and increase side effect risk. Use with caution if you have any heart-related conditions.

Availability and Cost

Sildenafil is available by prescription only in the UK.

• Generic versions are more affordable than branded Viagra.
• Supplied by licensed UK pharmacies such as Online Chemist.
• Avoid counterfeit products from unregulated websites.

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Sildenafil is available in the UK asViagraandCialis. Most users also report that their sexual function declines when they stop taking the medication.forderectile dysfunctiondysfunctionand EDThose with ED are more likely to experience premature erections.fordThose with PDE5- or PDE5-e is inhibited.

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About the author

The author of Men's Health magazine is Sildenafil. She is the author of several men's health articles and is the founder of, an online clinic for men with ED.

Nicknamed “The Weekender Pill”,Viagra is a well-known drug used to treat erectile dysfunction. It contains the active ingredient sildenafil, which is also used to treat pulmonary arterial hypertension.

Here are some important things to know about Viagra.

1. It is recommended to be used once a day.
2. It is very safe to use if prescribed by a doctor.
3. Men with heart problems may use Viagra to manage the symptoms of hypertension and angina.

Since Viagra is a phosphodiesterase type 5 (PDE5) inhibitor, it works by relaxing the muscles in the walls of blood vessels, allowing blood to flow more easily.

Viagra may also help improve exercise capacity in some men.

It works by increasing the amount of blood entering the penis when taking sexual performance-enhancing drugs.

It does this by allowing for an easier and more spontaneous erection.

Viagra should be taken orally, with or without food, and should be swallowed whole.

Men with erectile dysfunction should have their blood pressure checked regularly.

Possible side effects include headaches, flushing, dizziness, and blurred vision.

If Viagra is taken with food, it may help maintain a hard, erect erection for a longer time than if it were taken with a meal.

Viagra should be taken at least 60 minutes before sexual activity.

Men who are taking nitrates or guanyletin should avoid taking Viagra because it can increase the risk of a sudden and serious low blood pressure.

Men who have had a stroke or heart attack should not take Viagra.

Men taking certain medications for erectile dysfunction should avoid using Viagra.

Men with liver problems should use Viagra.

Men with kidney problems should use Viagra.

Viagra should not be taken if the person has a heart attack, stroke, irregular heartbeat, or a recent stroke.

Viagra may interact with some medications, including antibiotics, HIV protease inhibitors, and certain HIV medications.

Viagra may also interact with nitrates used for chest pain or heart problems.

Viagra should not be used to treat angina or chest pain.

Viagra should not be used to treat a painful or prolonged erection lasting longer than 4 hours.

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Viagra 25mg is a prescription medication used to treat erectile dysfunction in men. It works by relaxing the muscles in the walls of blood vessels, allowing blood to flow more easily. Viagra works by allowing for an easier and more spontaneous erection.

Men with heart problems may use Viagra to manage the symptoms of the conditions called “hypertension and angina.”

Men with liver problems should use Viagra because it works by allowing for an easier and more spontaneous erection.

Men with kidney problems should use Viagra to manage use-related side effects of Viagra.

Viagra should not be used if the person has a recent stroke, heart attack, or a stroke that is causing a low blood pressure.

Viagra should not be used if you have not given birth to a baby before the age of 18.

Viagra should not be used if the person has not had a heart attack, heart failure, or a stroke within the past six months.

Always read the label. Do not use Viagra 25mg, as the active ingredient may cause adverse reactions in your body.

Sildenafil Citrate tablets 100mg are used for the treatment of male erectile dysfunction, pulmonary arterial hypertension and benign prostatic hyperplasia. These tablets belong to the class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. These tablets are manufactured by Pfizer, a pharmaceutical company that also makes Viagra. Viagra works by increasing blood flow to the penis, which helps men to get and keep an erection. It is also available as a generic medication in the form of generic Viagra. This medication is available in a convenient generic form that is easily accessible. It is important to note that sildenafil citrate tablets 100mg is a prescription medication, and not a drug for the treatment of erectile dysfunction. It is therefore important to talk to your doctor before taking this medication to ensure its safety and effectiveness.

Sildenafil Citrate tablet 100mg

Sildenafil Citrate tablets 100mg is a medicine that is used to treat erectile dysfunction. It belongs to the class of drugs known as PDE-5 inhibitors. It works by relaxing the blood vessels in the penis, allowing the blood to flow into the penis when the person is sexually stimulated. The increased blood flow can help the penis to sustain an erection for a longer duration. If you have any questions about taking sildenafil citrate tablets 100mg, you can always talk to your doctor.

Viagra 50 mg

Viagra is a generic drug used to treat erectile dysfunction. It is a prescription medication, and not a drug for the treatment of erectile dysfunction. It is available in a generic form that is easy to take, so it is important to talk to your doctor before taking this medication to ensure its safety and effectiveness. If you are currently taking sildenafil citrate tablets 100mg and need help with taking it, it is important to speak with your doctor first.

Sildenafil Citrate tablets 100mg is a medicine that is used to treat male erectile dysfunction. It belongs to the class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. These tablets belong to a different class of drugs known as PDE-5 inhibitors. Viagra works by relaxing the blood vessels in the penis, allowing the blood to flow into the penis when the person is sexually stimulated. It is important to talk to your doctor before taking sildenafil citrate tablets 100mg to ensure its safety and effectiveness. If you are currently taking sildenafil citrate tablets 100mg and need help with taking it, it is important to speak with your doctor before taking this medication to ensure its safety and effectiveness.

Viagra is a generic medicine used to treat erectile dysfunction.

Viagra 100mg

Viagra is a medication used to treat erectile dysfunction. This increased blood flow can help the penis to sustain an erection for a longer duration. If you have any questions about taking sildenafil citrate tablets 100mg, you can always talk to your doctor before taking this medication to ensure its safety and effectiveness.

Uses of Sildenafil

Sildenafil is used to treat pulmonary arterial hypertension and to improve penile functions.

Therapeutic Category

Sildenafil: Phosphodiesterase type 5 (PDE 5) inhibitors

How Sildenafil works

Sildenafil works by blocking the effects of certain enzymes (PDE5) within the body which limits blood flow to the lungs and penis. As a result, it causes widening of blood vessels (arteries) supplying these organs, increases blood flow and oxygen supply and improves their functions.

Common side effects of Sildenafil

• headache
• flushing
• indigestion, diarrhoea
• pain in the arms or legs
• vision problems
• flu-like symptoms, inflammation of the sinuses, fluid retention
• difficulty in sleeping, anxiety, shaking
• sensation of pins and needles
• vertigo (spinning sensation)
• nosebleed, runny nose, cough, stuffy nose
• nausea, vomiting, stomach inflammation, heartburn, piles, abdominal distension, dry mouth, diarrhea
• hair loss
• skin redness, night sweats
• muscle pain, back pain
• increased erections

When to consult your doctor

Consult your doctor if you experience:

• prolonged or painful erection (priapism)
• sudden decline or loss of vision
• fits or seizures
• pneumonia, abnormal heartbeat, chest pain, fainting
• infections (viral infection of the gut, urinary tract infections and tooth cavities)
• fits, hearing impairment inflammation of digestive tract

Health Tips for Sildenafil

• Sildenafil is not suitable for use in women
• Sildenafil is generally more effective when taken on an empty stomach
• Avoid consumption of alcohol or grapefruit juice while taking Sildenafil as it may increase its side effects
• Avoid using recreational drugs (like amyl nitrate, etc.) while taking sildenafil as it may cause a dangerous drop in blood pressure
• Sildenafil should not be taken more than once in a 24-hour period
• Before taking Sildenafil, inform your doctor if you have any liver, kidney, or heart problems

In conclusion

Side Effects of Sildenafil

What is Sildenafil?

Sildenafil (the body part) is anxiety medicine, which is a medicine that contains Phosphodiesterase type 5 (PDE 5) inhibitors. Sildenafil is used to treat pulmonary arterial hypertension (high blood pressure in the arteries of the lungs) and to improve penile functions. It is available in the form of Phosphodiesterase type 5 (PDE 5) inhibitors. You can easily buy Sildenafil online at best prices. Moreover, Sildenafil is available in a wide variety of dosages, so you can get the best chance with your doctor's advice and also by taking the medicine in a dose and duration as advised by the doctor.

How to use Sildenafil?

The best idea is to take Sildenafil as per the guidance of your healthcare provider. Follow the prescribed dosage and use it only if it is prescribed by the healthcare provider.

What is the side effect of Sildenafil?

Sildenafil (the body part) can cause side effects, but they are usually mild and do not require medical attention.

Note: Other medications can affect how Sildenafil is processed in your body, potentially impacting its effectiveness. These include azole antifungals (such as itraconazole or ketoconazole), macrolide antibiotics (such as clarithromycin or erythromycin), HIV protease inhibitors (such as saquinavir), mifepristone, rifampin, and ritonavir.

Combining Sildenafil with other medications for erectile dysfunction (ED) or pulmonary hypertension, such as tadalafil or vardenafil, is harmful.

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