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Sildenafil, commonly known as Viagra, is a potent phosphodiesterase type 5 (PDE5) inhibitor, available in tablets up to 100 mg. It is designed for oral use, treating erectile dysfunction (ED) in men. During sexual arousal, it increases blood flow to the penis, helping achieve and maintain an erection. Sildenafil only works with stimulation and will not increase sexual desire on its own.
Targeting PDE5
During sexual stimulation, (NO) is released in the penis, and this causes smooth muscle relaxation and increased blood flow, leading to an erection. Sildenafil inhibits PDE5, the enzyme which boosts and prolongs the blood flow response.
Onset and duration
The tablet typically works in 20-60 minutes. It is best to take it on an empty stomach, as fatty meals can delay its absorption and effectiveness.
The effects of Sildenafil last for up to 4 hours, though this can vary between individuals. It does not mean you will have an erection the entire duration, but it improves your ability to maintain an erection when sexually stimulated.
Sildenafil is a clinically proven and widely used treatment for erectile dysfunction. Studies show that:
Around 70-80% men achieve improved erection
The effectiveness improves over time with repeated use
If it is not working, doctors recommend trying it again before considering an alternative
The medication helps regain sexual confidence and improve relationship quality. It is the most prescribed treatment for ED due to safety and reliability.
Viagra pills are not suitable for you if you suffer from these conditions:
Heart rhythm problems
Had a heart attack or stroke within the last six months
High or low blood pressure
Liver or kidney disease
Hemophilia
Sickle cell anaemia or leukaemia
Penile deformities
Suffer from retinitis pigmentosa
Stomach ulcer
It should not be taken in case of certain medication interactions, such as:
Individuals using nitrates can experience dangerous drops in blood pressure
Individuals on riociguat
People with sensitivity to sildenafil or its inactive ingredients
Avoid use with other erection devices or alternate PDE5 inhibitors due to the increased risk of adverse side effects
Use caution if combining with alpha-blockers, as it leads to low blood pressure
Usual Starting Dose:
Take orally. It is recommended that you take one Viagra tablet at least 1 hour before sex.
Dosing Window:
Viagra can take up to an hour to take effect in some men, although it can take effect in as little as 20 minutes in some men. Viagra can produce an effect for up to 4 - 5 hours.
Frequency:
Do not take more than one tablet for erectile dysfunction within 24 hours.
Limit your food and alcohol intake before taking Viagra to ensure it remains effective.
If the first dose does not, retry up to 8 times, as optimal effectiveness may require multiple doses.
Only take as prescribed
Avoid nitrates and alpha-blockers within 4 hours
Store tablets at room temperature and away from moisture and light
It does not prevent pregnancy or protect against STDs
Discontinue and seek help if adverse effects occur
Each Viagra tablet contains sildenafil in doses of either 25mg, 50mg or 100mg.
Active Ingredient: Sildenafil citrate
Inactive Ingredients: Microcrystalline cellulose, calcium hydrogen phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide (E171), lactose monohydrate, triacetin, indigo carmine aluminium lake (E132).
Headache
Fushing
Lightheadedness
Nasal congestion
Indigestion
Small risk of nausea, vomiting, or diarrhoea
Vision changes, such as increased light sensitivity or blurred vision
Allergic reactions (rash, angioedema)
Hearing loss
Sudden vision loss
Prolonged erection (priapism)
Heart rhythm changes
Severe hypotension
Chest pain
Muscle/joint pain
GI upset issues
Tinnitus
Vertigo
Seek medical attention immediately if you experience:
Erection lasting for more than 4 hours
Sudden chest pain, dizziness or fainting
Sudden loss of vision or hearing
Side effects usually fade in a few hours
Mild symptoms like a headache or flushing can be eased with hydration and rest
How long does Viagra last?
Viagra (sildenafil) typically lasts 4 to 6 hours, during which it helps in maintaining an erection with sexual stimulation. It does not cause a continuous erection and just improves your ability to sustain one.
How long does Viagra take to work?
Viagra usually starts working in 30 to 60 minutes, though some men may notice effects earlier. It is best to take it on an empty stomach for quicker absorption and better results.
What does Viagra do?
Viagra helps in the treatment of erectile dysfunction by increasing blood flow to the penis during sexual stimulation. It helps men achieve and maintain an erection.
How does Viagra work?
Viagra is a PDE5 inhibitor. It enhances the effect of nitric oxide release which relaxes blood vessels in the penis, allowing for better blood flow during sexual stimulation, helping achieve an erection.
Can women take Viagra?
Viagra is not licensed for use in women and may not have the same effects. Some studies have explored its use for female sexual dysfunction, but results are inconclusive.
Can you buy Viagra over the counter?
In the UK, Viagra Connect (50mg sildenafil) is available over the counter, but a pharmacist will ask for health-related information to ensure it is safe for use.
Does Viagra make you last longer?
Viagra may help you maintain an erection longer. It improves erections, which can enhance confidence and overall sexual performance.
How many inches does Viagra give you?
Viagra does not increase penis size. It improves blood flow for stronger erections, but it will not physically add inches.
What happens if a woman takes Viagra?
In women, its effectiveness is not well established and may cause side effects like headaches, flushing, or nausea.
Where to buy Viagra?
You can buy Viagra from UK pharmacies, such as Care Pharmacy. It is available after a consultation with our professional.
Does Viagra work for women?
Viagra is not officially approved for women, and clinical results have been inconsistent. While it may improve genital blood flow, it does not enhance libido or sexual satisfaction in women.
What does Viagra do to women?
Viagra may increase blood flow to the female genital areas. However, it does not significantly affect sexual arousal or satisfaction in most women and is not routinely recommended.
When should you take Viagra?
Take Viagra about 30 to 60 minutes before sexual activity. Try to avoid high-fat meals beforehand, as they can delay efficacy. Take only one tablet in 24 hours.
What is the strongest Viagra pill UK?
The strongest Viagra dosage available in the UK is 100mg of sildenafil. It must be used under medical supervision.
What can I use instead of Viagra?
Alternatives to Viagra include Cialis (tadalafil) or Spedra (avanafil). These are also PDE5 inhibitors, helping men with erectile dysfunction and are available at Care Pharmacy.