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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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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.

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Yes, we stock generic Sildenafil — the same active ingredient as brand-name Viagra.

No, we aren't saying this is better. It's just that we do find it much more difficult to swallow pills than sildenafil, and that's especially for older men, too.

Buying Sildenafil online is easy, fast, and can be done with a few simple clicks. You just have to fill out a quick consultation with a pharmacist and a U. S. licensed U. pharmacy. Once your order is set, you can fill out a quick medical questionnaire. Once complete, your U. doctor will review your symptoms and medical history and decide on the safe, legal, and dosage we will be giving you.

VIDEO

What is Viagra (sildenafil)?

Viagra (sildenafil) is used to treat erectile dysfunction. Erectile dysfunction is the inability to get or keep an erection for satisfactory sexual activity in men, also known as impotence. Sildenafil belongs to a class of medications called phosphodiesterase type5 (PDE5) inhibitors. Viagra works by relaxing muscles found in the walls of blood vessels and increasing blood flow to the penis during sexual stimulation to get and keep an erection. Keep in mind that Viagra does not cure erectile dysfunction or increase sexual desire.

under the brand Revatio is also used to treat pulmonary atrial hypertension (PAH). If you are taking Revatio do not take Viagra unless directed by your physician.

Buy Viagra Online : Know the Dosage

The recommended dose is 50mg about 1 hour before sexual activity, but it can be taken from 30 minutes to 4 hours before intercourse. The maximum daily dosage is once per day, with or without food. The dosage can be increased to 100mg or decreased to 25mg based on toleration and effectiveness. Viagra 100mg are available in KamaHealth.

Side Effects

MedicationOnsetDuration
Sildenafil (Viagra)30-60 minutes4-5 hours

The most common side effects consist of the following:

  • Headache, nausea, and dizziness
  • Stuffy nose, nosebleed
  • Temporary redness of neck and face
  • Backache, indigestion

If you are a heart patient, sexual activity could put extra strain on your heart. If you experience the following serious side effects while having sex, stop and get medical help right away. The side effects include:

  • Severe dizziness
  • Nausea
  • Chest/jaw/left arm pain
  • Fainting

Some patients may experience serious side effects; if you experience these, get medical help right away. Serious side effects include:

  • Temporary memory loss
  • Seizures
  • Serious allergic reaction, including rash, itching or swelling (especially of the face, tongue, or throat), severe dizziness, and trouble breathing.

We offer more than just lower prices on

sildenafil in Canada and free shipping. Some patients experience side effects that are not listed. If you have any concerns regarding Viagra, contact your physician.

Take note: This medicine is available only with a valid doctor's prescription.It is a dangerous drug to take, and we offer safe and affordable alternatives for CVS, Target, Walgreens, and more.

How Viagra works

Viagra is an oral medication used to treat erectile dysfunction in men. It works by relaxing the blood vessels in the penis, allowing for increased blood flow to get and keep an erection. This increased blood flow results in the where the phosphodiesterase 5 (PDE5) enzyme (CE5) not only time until sexual activity, but can also cause blood thicker than normal (dyspermic) to increase the level of blood that comes in contact with the skin of the eye to create a visual problem. This is when the active ingredient, sildenafil, is used to treat PAH and erectile dysfunction.

Take note: This medicine is available only with a prescription. You must consult a physician before taking Viagra. We offer safe and affordable alternatives for CVS, Target, Walgreens, and more.

Viagra 100mg

Viagra can help you have harder, long-lasting erections by increasing blood flow to the penis. This increase in blood flow can help you achieve and maintain an erection. Viagra is a class 5 drug that also used to treat pulmonary atrial hypertension (PAH).

Viagra can help you have longer-lasting erections by increasing blood flow to the penis.

The cheapest erectile dysfunction (ED) pills are generic Viagra, called.

What is a generic drug?

The term "generic" refers to the active ingredient of a medicine or drug rather than to the advertised brand name under which the medicine is sold. It is a term referring to any drug marketed under its chemical name without advertising.

Pfizer made the originaltablet that is often referred to as the “blue pill”.The patent expired in 2013 which then allowed other pharmaceutical manufactures to make a generic version under the name of the active ingredient called Sildenafil. They are exactly the same medically and perform in the same way with the same side-effects.

As with most branded products, Viagra is sold at a higher price,therefore the generic tablets sold asare much cheaper.

What is the difference between generic and branded drugs?

Medically there is no difference between a generic medicine and the branded medicine, as they both have the same active ingredients to make them perform in the same way. They only differ in the “bulking” agents used to fill the tablet as the amount of active ingredient required, in this case Sildenafil, is very small. This makes the tablets bigger and easier to handle.

The main difference between generic andbranded named prescription medicines is cost with generics being much cheaper

Every pharmacy can choose what price they sell at, as there are no fixed prices. It will depend on what price the pharmacy can buy the drug from the wholesaler and the cost of their own overheads. They can they decide what mark-up they require and some pharmacies choose to sell some products at higher prices.

At Webmed pharmacy we aim to keep our prices as low as possible, without compromising the quality of service, as we arethe only online pharmacy to offercourier guaranteed next working day as standard

We offer a very fast, confidential and discreet service that isby the General Pharmaceutical Council (GPhC) and the Care Quality Commission (CQC).

A large proportion of our sales are made up of returning customers as they have been delighted with our service.

What is the best brand of sildenafil?

When you choose to buy any prescription medication online, you must first of check that the pharmacy is with the General Pharmaceutical Council (GPhC).

All pharmacies using a UK General Medical Council, to prescribe their medicines will also be registered with the UK government Agency the Care Quality Commission (CQC).

Those online pharmacies who are not registered with the CQC either use pharmacist prescribers or foreign doctors.

You will then know and have the confidence that all the brands being offered are genuine and will work in the same way. All the pharmaceutical companies are inspected by the Medicines and Healthcare products Regulatory Agency (MHRA) to ensure they manufacturer the drugs to the same quality standard. This means that the key ingredient that is referred to as the “active” ingredient is exactly the same in all brands.

The other inactive ingredients that make up the bulk of the tablet are called “excipients” and can vary.

For those people who are allergic to or have an intolerance to lactose, then the is ideal for you as it is lactose free. You can check the additional excipients on the patient information leaflet supplied with your tablets.

Although medically all the generic tablets are identical, they may look different as they can vary in colour, shape and size due to the varying excipients.

The patent for, owned by Pfizer, expired in July 2013, which then allowed other pharmaceutical companies to produce generic. There are a number of companies now manufacturing which include Accord, Ajanta, Dr Reddy’s, Mylan, Teva, Torrent and Zentiva. Even Pfizer make a that they sell cheaper than Viagra although generally more expensive than the equivalent generic brands.

Author 19th September 2019

Main Ingredients

Key ingredient

The generic tablets are released 14 EDT upon expiry. They are safe under UK medical standards but can vary in colour, shape and size from all the generic tablets upon passing the.

A British man is suspected of buying fake Viagra from a Thai clinic, after he was arrested on suspicion of buying the drug on his own and was arrested on suspicion of illegally buying it. In a statement to The Sun, he said: "My brother had the wrong name, his name was Thai Viagra. We bought the fake one from a Thai clinic. The clinic is a Thai herbal medicine shop and they have a few herbal supplements for sale, which are called "Viagra" or "Viagra's". They say that they only have the original drug. They sell fake Viagra on the Internet and it's not just a fake drug. It's a fake version of a normal medication, which can cause serious side effects, like headaches, heart problems, dizziness, blurred vision, low blood pressure, and problems with your heart, lungs, or kidneys. The clinic said the patient had been taking a prescription medicine for erectile dysfunction and was taking sildenafil for heart failure. The man was arrested on suspicion of buying Viagra on his own and being a foreigner. He was then held in prison for a few days and was released on bail in February 2018. "We are sure that the clinic will take a few months to find out what is in this packet. We will talk to the clinic on our way, and we will tell them what we found. We want to talk to them, tell them what we found and tell them what happened." He was also ordered to stop using the herbal medicine, as he could not have bought Viagra on his own. The man was charged with two counts of buying Viagra on his own and illegally buying it on his own. He was also ordered to stop using the herbal medicine as it could lead to dangerous side effects. The man is now under investigation.

Read more

In Thailand, fake Viagra is a prescription drug, and can be bought without a doctor's prescription. But when you buy it from a clinic, you won't have to pay for the medicine. "It can be bought over the counter on the internet, as a prescription medicine," the man said, referring to the drug that can be bought without a doctor's prescription.

A Thai police officer, who asked not to be named, said he was worried that the clinic would sell fake Viagra to customers who don't have a prescription. "I don't know what the problem is. We are not sure that it is the drug.