How does Sidena (Sildenafil) work?

Sidena works by relaxing the blood vessels in the penis, allowing more blood to flow into it when sexually aroused. This increased blood flow helps to achieve and maintain an erection.

How should I take Sidena?

The recommended dose of Sidena is 50mg (1 tablet) once daily as needed, taken approximately one hour before sexual activity. Swallow the tablet whole with water, and do not take more than 1 tablet daily.

Is Sidena as Effective as Viagra?

Yes, Sidena is as effective as Viagra because they both contain the same active ingredient, sildenafil. The effectiveness of these medications depends on individual responses, but they are medically equivalent.

Can I use Viagra and Sidena at the same time?

No, you should not use Viagra and Sidena at the same time, as both contain the same active ingredient, sildenafil. Taking more than one sildenafil product can result in an overdose.

How do I know if Sidena is right for me?

We offer Sidena both online and in-store for adult men (18 years and older) experiencing difficulties with their erections. It is crucial to consult with a healthcare professional before taking Sidena to ensure its suitability based on individual medical history and current medications, as well as to receive personalised dosage recommendations. Count on Phelans Pharmacy for dependable assistance and convenient access to Sidena. Your health and well-being are our primary concerns.Please notethat Sidena is not intended for use by women, individuals under 18 years of age, or those without erectile dysfunction.

Can I use Sidena if I have underlying medical conditions?

Not all individuals with underlying medical conditions can safely use Sidena. If you have a history of severe heart disease, stroke, liver disease, kidney disease, or certain eye conditions, among others, Sidena might not be suitable for you. Always consult your doctor before starting Sidena.

This is why you’ll be asked a few straightforward questions about your health before we supply you with Sidena tablets.

What are the side effects of Sidena?

Most men find Sidena effective and do not experience significant side effects. However, some men may experience nausea, facial flushing, hot flush, indigestion, blurred vision, visual disturbance, stuffy nose, and dizziness. Very rare side effects include allergic reactions, chest pains, fits, and prolonged painful erections, which require immediate medical attention.

Can I use Sidena with other erectile dysfunction treatments?

You should not use Sidena concurrently with other erectile dysfunction treatments unless directed by a healthcare provider. This includes both other oral medications and topical treatments. Using multiple treatments together can increase the risk of side effects and may not increase efficacy.

Can I take Sidena with other medications?

Some medications can interact with Sidena, notably nitrates used to treat angina and heart disease. Always disclose any medications you are currently taking to your healthcare provider before starting Sidena.

At, our commitment is to provide you with the highest quality of care and discretion. Our team of experienced pharmacists can answer any questions you may have, and provide personalised advice to ensure Sidena (Sildenafil) is the right choice for you. today for more information!

Sidena online not recommended

What does Sidena (Sildenafil) entail?

As men age, difficulty in achieving and maintaining an erection becomes a common question. Sidena (Sildenafil) is commonly prescribed for the treatment of erectile dysfunction. However, not everyone who uses it has severe erectile dysfunction. The information provided on this page allows for age-related the desired insights.

First, we’ll discuss the benefits and risks, as well as the limitations, regarding Sidena (Sildenafil). This powerful oral medication can only be used if prescribed by a healthcare provider.

When examining how Sidena (Sildenafil) works, we’ll first delve into the facts about its composition. This includes its composition.

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

Inform your doctor If you're taking this product Information

For adult men, Sildenafil tablets are not suitable for use in adult men

• Sildenafil tablets are for adult men and should not be used by children
• Sildenafil is not for women
• Sildenafil is generally more effective when taken on anakleheal male reproductive organ
• Sildenafil is usually taken twice daily (24 and 48 hours) for around 4 days
• Some drugs may make taking sildenafil less effective. For example, a medicine called amlodipine or quinidine may cause a sudden drop in blood pressure when taken in the 24 hours before you plan to have sex.

Product options

Cautions and warnings

Adverse effects of Sildenafil

Do not take Sildenafil if you have certain medical conditions, such as heart problems or low blood pressure. Your doctor will need to review your carefully to ensure that you are taking this medicine right for you. Your doctor will discuss the potential risks and benefits of taking Sildenafil with you during your treatment with Sildenafil.

Some medications may interact with Sildenafil.

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.

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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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Last updated 6 March 2024

ASDA is now (1) after the safety and qualityof sildenafil in children.

New safety information has been added to the ASDATable of Contentsof the ASDA leaflet.

For information on the safety ofsildenafil in children, see theASDA Prescribing Informationtable of the

Table of contents

General

Sildenafil is not addictive in the long term. The drug is present in tablet form in tablet form in tablet form in a dose of 50mg, 100mg, or 200mg. The tablet form of sildenafil is a liquid form.

Sildenafil is supplied in the following doses:

• 100mg tablets (ASDA) for oral use only
• 200mg tablets (ASDA) for injection only

Contraindications

Sildenafil is contraindicated in the following ways:

• In patients with a known hypersensitivity to sildenafil or any of the ingredients in this product.
• In patients with a history of tadalafil allergy.
• In patients with a history of heart failure.
• In patients with severe heart failure.
• In patients with a history of severe hypotension.
• In patients with a history of peripheral neuropathy.

Side effects

The most commonly reported adverse reactions with sildenafil are:

• Headache
• Backache
• Flushing
• Nasal congestion
• Indigestion
• Dizziness
• Dyspepsia
• Dry mouth
• Rash
• Taste disturbance

A more serious risk associated with sildenafil use is the possibility of a severe reaction with anaphylaxis. Patients who have an allergic reaction to this drug should seek medical advice from their doctor.

Precautions

The safety of sildenafil has not been established in the treatment of premature ejaculation (PE).

The risk of priapism and penile ulceration associated with sildenafil use is increased in patients with a history of priapism and Peyronie’s disease. Sildenafil should not be given to patients with a history of priapism or Peyronie’s disease who are already taking nitrates.

PE is a common condition which can occur in association with sexual activity and is characterised by the development of penile curvature and sexual dysfunction. It is the cause of most sexual problems in men and women and can include:

• Problems with erection
• Impotence
• Convulsions
• Sudden loss of vision

Sildenafil has been associated with a risk of priapism and penile ulceration, and therefore, it is contraindicated in the management of these conditions.

PE is also the cause of most sexual problems in men and women and can be the cause of most sexual problems in women.

Sildenafil is contraindicated in patients with a history of heart failure.

Patients with a current cardiovascular or cerebrovascular disease, cerebrovascular disease, or heart failure should not take sildenafil.

In the management of premature ejaculation, sildenafil is contraindicated in the following ways:

• The drug is contraindicated in patients with a history of heart failure.
• If the patient has ever had a sudden loss of vision
• In the past three days or more of using sildenafil.