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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Common: ED– Possible: headache, flushing, stomach upset

Side Effects bye e a c o m i d e a n t

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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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• Alterations can occur through drug interactions, affecting the medications work or pose a alarming side effect.

arcity of alcohol

Avoid alcohol with Sildenafil, especially when using it with nitrates.

Alcohol is a significant component of your medication. It increases your risk of experiencing side effects like dizziness or low blood pressure.

Alcohol can increase your blood pressure, making you dizzy or faint or faint or feel faint when taking Sildenafil.

Alcohol can increase the effects of certain medications like alpha-blockers, macrolides, and antifungals ( like itraconazole or ketoconazole).

Never begin, end, or alter Sildenafil dosage without consulting your doctor first.

Certain products may interact with Sildenafil

A dangerous drop in blood pressure arises when Sildenafil is used together with nitrates. This severe drop can lead to under rise dizziness or fainting.

Avoid using Sildenafil with nitrates used for treating chest pain.

If you are using Sildenafil together with nitrates for an enlarged prostate (like tamsulosin), it may cause dizziness or fainting.

If you’ve used Sildenafil with nitrates for an enlarged prostate (like tamsulosin), it may cause dizziness or fainting.

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Sildenafil and Alcohol Interaction

Alcohol can increase the effects of Sildenafil, causing side effects like dizziness or lightheadedness. These side effects are more likely when you combine it with alcohol.

Using Sildenafil with alcohol can result in side effects like headaches, dizziness, nausea, and light-headedness. These side effects are usually mild and go away on their own.

Alcoholic interactions can occur because Sildenafil affects the medications work by inhibiting the enzyme PDE5. This enzyme breaks down certain chemicals in the body that allow for the smooth muscles to relax and blood flow. Sildenafil can therefore help relax and widen these muscles.

Alcohol can affect the effects of Sildenafil, leading to side effects like headaches, dizziness, and light-headedness.

Patient Information

Viagra is a brand name for sildenafil citrate, a medication used to treat erectile dysfunction (ED) in men. It is manufactured by Pfizer in the UK and the generic name is sildenafil citrate. Sildenafil citrate is also used to treat the symptoms of pulmonary arterial hypertension (PAH), such as shortness of breath, chest pain and pressure, nausea and vomiting. Viagra tablets cost a lot more than Viagras, but they work in the same way as Viagra.

Viagra and Sildenafil are both used to treat ED. Viagra does not treat that condition itself. It is a selective PDE-5-inhibitor. Sildenafil is used to treat PAH, while Viagra is used for PAH alone. Viagra is used only with regard to ED. It is not used to treat PAH alone. It does not cure ED.

What is Viagra?

Viagra is a brand name for sildenafil citrate, which is the active ingredient in Viagra, a medication used to treat erectile dysfunction (ED) in men. It is a generic drug and cannot be purchased from a UK-regulated pharmacy.

Viagra belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. It works by allowing the blood vessels in your penis to bloodshot and carry more blood, allowing your blood to flow into the penis when you get sexually excited, thereby. This function is needed to widen the blood vessels in your penis, and more blood can be blood cells found in your body. Viagra increases blood flow to the penis, causing the blood vessels in your penis to relax, and allows the blood vessels in your penis to widen as well as longer, making it easier for you to get and maintain an erection for sexual activity.

Who can use Viagra?

Viagra is not suitable for people who are allergic to sildenafil or any of the other ingredients of this medicine.

How does Viagra work?

Viagra works by increasing blood flow to the penis, which leads to an erection.

• Stimulates the enzyme PDE5 (sildenafil Citrate-cilLegitimoyne

By increasing blood flow to the penis, Viagra allows you to get and maintain an erection that is suitable for sexual activity.

How to use Viagra?

Viagra is swallow a 25mg tablet of the active ingredient into the mouth or, if taken with a glass of water, it can be taken with a glass full of water. Viagra is usually taken 30 minutes to 4 hours before sexual activity.

Warning

Do not use Viagra if you are allergic to sildenafil or any of the other ingredients of this medicine.

To ensure this medicine is safe for you, tell your doctor if you have any of the following:

• Leukopenic family of kin medicines (a type of medicine).
• Major depressive, or chronic depressive disorder ( depressive illness has a high incidence of side effects and should be treated with antidepressants such as amitriptyline or nortriptyline.
• Severe heart or liver conditions (Peds xxx); any of the above.
• High or low blood pressure (a disease called high blood pressure high in potassium).
• Kidney or liver problems, and blood disorders ( family medicine).
• Medication for an enlarged prostate or urinary problems ( a medicine for women aged 18 years and older and a medicine for children aged 3 months and above.
• Signs of a serious allergic reaction to this medicine (Aminosol).
• Signs of a heart attack (heart failure, Yeast infection).
• Signs of a stroke (perTA).
• Signs of a liver problem (very common and not always reported).
• Medication for high blood pressure (aa medicine for women aged 3 months and above).

What are the differences between Viagra and generic Viagra?

Viagra and generic Viagra have several advantages over Viagra and Sildenafil. Viagra increases blood flow to the penis, which causes an erection.

As with any drug product, there may be side effects. Generally, patients who experience side effects usually get them within 12 to 24 hours after taking Sildenafil. Side effects can include:

• Headache
• Upset stomach
• Flushing
• Nasal congestion
• pirer breathing

Some side effects can be more serious. Patients should immediately contact a doctor if they experience any of the following:

• An erection that lasts more than 4 hours
• Chest pain or shortness of breath
• Signs of skin rash or hives
• Fainting
• Yellowing of the skin or eyes
• Facial swelling

If you experience any of the following symptoms, get in touch with a doctor and they may be able to help.

• Pain during sexual intercourse
• Increased pressure in the blood vessels that supply the penis
• Dizziness
• Light-headedness
• Muscle cramps
• Tiredness
• Tenderness of the penis

For a full list of side effects,.

Precautions: Do not take Sildenafil if you are taking any other medications that could interact with it. Also, do not take Sildenafil if you are elderly or have kidney problems. Patients should be told to call their doctor if they have any concerns or side effects related to them.

Some patients have reported increased sweating, flushing, and nasal congestion when taking Sildenafil. Patients should also be told to tell their doctor if they have any allergies.

Some patients have reported headache and flushing when taking Sildenafil. Patients should also be told to tell their doctor if they have any concerns or side effects related to them.

Some patients have reported increased sensitivity to light, especially in the morning.

Some patients have reported nosebleeds, headaches, nasal congestion, and flushing when taking Sildenafil.

Pale skin

Some patients have reported severe pale staining on their skin.

Permanent vision loss

Some patients have reported changes in their vision when taking Sildenafil.

Sudden increase in pressure

Some patients have reported sudden pressure to the skull caused by taking Sildenafil. Patients should also be told to call their doctor if they experience sudden pressure to the skull.

Some patients have reported feeling lightheaded when rising from a sitting or lying position. Patients should also be told to get up from a standing position and lie down with their head resting on the side of the head.

Some patients have reported nasal congestion and dizziness when taking Sildenafil. Patients should also be told to tell their doctor if they experience nasal congestion or dizziness.

Some patients have reported feeling flushed or dizzy when taking Sildenafil. Patients should also be told to get in touch with a doctor if they experience flushed or dizzy feeling.

Patients should also be told to contact a doctor if they experience sudden drops in blood pressure. Patients should also be told to tell their doctor if they experience sudden drops in blood pressure.

This blog is written and edited by Heather Thiele.

The views expressed herein are solely those of the author and do not necessarily represent the views, position, or position of the site.

This blog is designed to help people with sexual health problems to seek advice and support.

Related content

This blog contains general information, but it should not be taken as medical advice. Always consult a healthcare professional before using any medication or treatment for your condition. Before using, or consuming any products, check with your doctor or pharmacist.

What are the possible side effects of sildenafil?

The most common side effects reported by men taking sildenafil include:

• headache
• flushing
• back pain
• changes in vision or seeing things that are not there

Some men have also reported more serious side effects. These may include:

• chest pain
• difficulty breathing or swallowing
• trouble falling or staying asleep
• numbness or tingling of the hands or feet

Related topics

More information

Caution

Do not take this medication if you have had an allergic reaction to any of its ingredients. In such cases, your doctor may advise you to seek medical advice.

Do not take this medication if you are pregnant or breastfeeding. Women of childbearing age are at greater risk for these reactions.

Do not use this medication if you are allergic to sildenafil citrate, sildenafil citrate and tadalafil.

Information

Cautions

Do not use this medication if you have a condition called priapism, in which the penis becomes painful and causes an erection. If you have a known allergy to any of these ingredients, you should not use this medication.