Sildenafil compare prices

Drug Interaction of Viagra 100mg Tablet

Drug-Drug Interaction

Chloramphenicol

The use of this drug is contraindicated because the use of chloramphenicol will increase the effect of Sildenafil by affecting the patient hepatic and intestinal enzyme metabolism.

Isosorbide dinitrate

The use of this drug is contraindicated because the combination of this drug either increases the effects of the other by vasodilation which leads to fatal hypotension.

Nitroprusside sodium

The use of this drug is contraindicated because the combination of this drug either increases the effects of the others by pharmacodynamic synergism.

Enzalutamide

Use alternative drugs because the use of enzalutamide will decrease the effect of Sildenafil by affecting patient hepatic and intestinal enzyme metabolism.

Acetazolamide

Therapy should be administered with caution because the use of Sildenafil increases the effect of acetazolamide by pharmacodynamic synergism and it also increases the risk of hypotension.

Drug-Food Interaction

The use of this medicine can lower blood pressure and when combining it with alcohol further increases the effect. You may experience dizziness, lightheadedness, fainting, flushing, headache, and heart palpitation. Also, avoid consuming grapefruit juice because it may increase the effect of avanafil on blood levels.

Drug-Disease Interaction

Cardiovascular disease:

The use of phosphodiesterase-5 enzyme inhibitors is contraindicated in patients with cardiovascular disease. A doctor should consider the vasodilatory effects of this drug and whether they may affect patients with cardiovascular disease. The use of this drug may increase the risk of angina pectoris, AV block, myocardial infarction, ventricular arrhythmia, tachycardia, palpitation, hypotension, postural hypotension, syncope, cerebral thrombosis, cerebrovascular hemorrhage, transient ischemic attack, cardiac arrest, heart failure, and hypertension. These events can occur during or after sexual activity.

Renal dysfunction:

Therapy should be administered with caution in patients with severe renal disease or on renal dialysis. The plasma clearance of this drug is decreased in patients with a severe renal impairment which results in drug accumulation.

Liver diseases:

The use of this drug is not recommended for patients with severe hepatic impairment because the pharmacokinetic disposition of this drug has not been assessed in patients with severe hepatic impairment.

AddictiveMetformin

Use alternative drugs because the use of Metformin may increase the effect of Metformin by affecting patients with impaired hepatic or renal function.

synergismAmlodipine

Therapy should be administered with caution in patients with stable or worsening hypertension. Also, avoid drinking alcohol because this medicine may increase the effect of amlodipine.

Pregnancy

The use of this medicine is not recommended for use during the pregnant period.

mineralocorticinuria

Pregnancy:

Therapy should be administered with caution in the use ofmlastecin

Breast cancer:

Therapy should be administered with caution in the use of mifepristone

Bone andARCH fracture:

Therapy should be administered with caution in the use of orlistat

liver dysfunction

Use alternative drugs because the use of liraglutide may decrease the effect of liver Lakartinib which is a glucocorticoid alsoishableameravailengesandShopynateis

The use of this medicine can increase the risk of taking alcohol with this alcohol product because the combination of this drug either increases the effects of alcohol by pharmacodynamic synergism.

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.

Take Control of Your Sex Life

Don’t let ED affect your confidence or relationships. Buy Sildenafil tablets online today and experience more satisfying erections — securely, discreetly, and from our trusted UK-regulated pharmacy.

✅ Free online consultation✅ Fast UK delivery✅ Discreet packaging✅ GPhC-regulated

now and get back to enjoying intimacy with confidence.

Store Notice: Orders placed after 11:00 AM on Friday, 23 May 2025 will be processed on the next working day, Tuesday, 27 May 2025, due to the bank holiday weekend. Thank you for your understanding.

Share Sharelike

Download the to get a free consultation with theNational Patient Pharmacy.

Sign up forPatient InsightsAccessibility findor

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 usually resolve on their own within 48 hours.

Most common side effects

Headache, flushing, nasal congestion, indigestion, and stuffy nose have also been reported. These side effects can be a problem with sildenafil, so it is important to get medical help right away.

Some serious side effects that could occur are heart problems (such as chest pain, irregular heartbeats, or shortness of breath or chest pain caused by an abnormal heart rhythm), priapism (a painful erection that does not go away), and sudden vision or hearing loss (prolonged or painful erections that last more than four hours).

Patients should be advised to seek medical attention immediately if they have any of the following side effects:

  • Persistent or bothersome weakness or dizziness
  • Stomach pain
  • Rash, hives, or itching around the eyes
  • Sudden vision loss

If you have any of the above side effects, get medical help right away. Side effects that may occur may be:

  • Sudden hearing loss

Some serious side effects that could occur while taking sildenafil are:

  • Allergic reactions (such as swelling of the face, lips, tongue, or throat)
  • Blood clots (such as heart attack, stroke)
  • Low blood pressure
  • Kidney problems
  • Seizures
  • Unusual bleeding or bruising
  • Liver problems
  • Blood clotting problems
  • Serious allergic reactions (rash, swelling, difficulty breathing, or hives)

Patients taking nitrates for chest pain (e.g., nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and nitrous oxide)

Precautions

Before taking sildenafil, tell your doctor about all the products you use, including prescription and over-the-counter medications, vitamins, and herbal supplements. This includes over-the-counter drugs, vitamins, and supplements. They may need to adjust the dose or test the effects of these drugs before prescribing sildenafil.

Drug interactions

Patients taking sildenafil may experience certain side effects. Tell your doctor about all the drugs you use (e.g., medicines, herbs, non-prescription drugs, foods, and ointments). They may need to monitor your blood pressure, heart rate, and blood pressure levels to ensure that sildenafil is safe for you. Patients taking nitrates for chest pain (e.g., nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and nitrite derivatives) should also be aware of this risk.

Patients taking sildenafil should also be aware of certain drug interactions. Tell your doctor if you are taking any of the following drugs:

  • Amyl Nitrite (such as Isosorbide Dinitrate, Nitrite)
  • Aliskiren
  • Acetazolamide
  • Cimetidine
  • Cobicistat
  • Doxazosin
  • Rifampin
  • Tacrolimus

Taking sildenafil with certain antihypertensive drugs (e.g., ritonavir, saquinavir) may increase the blood levels of certain drugs. Tell your doctor if you are taking any of the above drugs.

Patients taking sildenafil should be advised to check the blood levels of some drugs before taking sildenafil. Some blood pressure medications (e.g., angiotensin-converting enzyme (ACE) inhibitors, diuretics) may decrease the blood levels of sildenafil. Your doctor may need to monitor your blood pressure levels while you are taking sildenafil.

Introduction About VIAGRA 50MG TABLET

Viagra is a FDA approved prescription medication for the management of erectile dysfunction. It helps enhance blood flow, supporting erectile function during sexual activity.

Viagra 50mg Tablet can be taken with or without food but should always be used as directed by your doctor. For best results, take it approximately one hour before planned sexual activity. While the time it takes to work may vary from person to person, it usually starts acting within 30 minutes to an hour. This medicine works only when there is sexual stimulation. Do not exceed the recommended dose of one tablet in 24 hours.

Avoid alcohol consumption while taking this medicine, as it can increase the likelihood of experiencing side effects such as dizziness or headache and may decrease the effectiveness of Viagra Tablet.

It is essential to avoid using it with nitrate-based medications (commonly prescribed for chest pain or angina) as this combination can cause serious health risks. Additionally, do not use Viagra 50mg Tablet if you have severe heart or liver conditions, have recently experienced a heart attack or stroke, or have very low blood pressure. Always inform your doctor about your medical history before starting this medication.

The most common side effects of Viagra include flushing (a warm sensation), headache, dizziness, blurred vision, muscle pain, indigestion, and rash. If these effects persist or become bothersome, consult your doctor for advice. They may adjust your dosage or suggest an alternative treatment. Patients are advised to seek immediate medical attention if an erection lasts more than 4 hours, as priapism can cause permanent damage to the penis.

What is Viagra

Viagra 50mg Tablet is a sildenafil citratefactors, an oral medication that helps improve erectile function by increasing blood flow to the penis. This helps achieve and maintain an erection when sexually stimulated. It is typically taken about 1 hour before sexual activity. While the time it takes to work may vary from person to person, it usually starts working within 30 minutes to an hour. Viagra is an effective treatment for erectile dysfunction who have not responded to other treatments like gonadotrophins and other medications for erectile dysfunction.

Viagra 100mg Tablet is a phosphodiesterase-5 (PDE-5) inhibitor that can be used to treat erectile dysfunction (impotence) by increasing blood flow to the penis, helping to enhance erectile function. Viagra is a prescription medication available to millions of men worldwide.

How Does VIAGRA 50MG TABLET Work?

Viagra 50mg Tablet works by enhancing the blood flow to the penis, helping to improve erectile function. It belongs to a class of medications called sildenafil, and its function is similar to that of other PDE-5 inhibitors such as tadalafil. Both medications work by relaxing the blood vessels in the penis, allowing for increased blood flow during sexual stimulation.

How effective are VIAGRA 50MG TABLETvers to improve erectile function?

Viagra 50mg Tablet is highly effective in enhancing erectile function in men with erectile dysfunction. Over 2 hours of continued use is used to produce the best results, depending on factors such as guessed answers, age, and other factors that affect the results. Common side effects include flushing, headache, indigestion, and nasal congestion. However, not everyone experiences these effects. Below is a list of some of the most common VIAGRA side effects that are considered "sudden and severe".

Flushing - 1 - 50% of men experience

Flushing is the most common side effect of Viagra, and it can be managed by managing it more effectively than by sex. Men who experience it less often than those who do not experience it report fewer side effects than those who are pleased with the results.

Some men who experience flushing while taking Viagra experience a headache, indigestion, or nasal congestion. Headache can be reduced by drinking about 1 cup of wine a day.