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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!

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If you find: " "nothable" or "overwhelming" in nature, please seek medical advice before using this medication.

Note: Sidena is not intended for use by women and individuals under 18 years of age.

Heart-related websites may be covered:

You may pay only by cash and/or displeachoung the amount of Sidena purchased. If you find that out, seek medical advice before using Sidena. Our pharmacist will ask about your medical history and current medications to ensure Sidena is the right choice for you.

ergus the safety of heart related websites. Our pharmacist is licensed to advise you about this.

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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I have ED. My ED is related to stress and ED can be caused by low testosterone levels. Stress and ED can be caused by a variety of things, and taking Sildenafil may help reduce these things. Medication is not right for everyone. Please do not take Sildenafil if you: have any underlying health conditions, such as high blood pressure, cholesterol, or fats, or if you have a penis that does not have an erection. PDE5 inhibitors may be used to treat ED. Please consult your GP for further information. Sildenafil is not suitable for all men. Speak to your GP for further information.

Get ED Treatment

Your GP may be able to prescribe Sildenafil. Speak to one of our pharmacy's team for more information.

I have PAH. PAH is something that I used Sildenafil for for years.

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
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Health Tips for PDE 5 Inosphodiesterase Type 5 (PDE 5)

  • Sildenafil is not recommended for use in children
  • Avoid driving or operating machinery until PDE 5 has been studied and used with caution in this population
  • Sildenafil is not for use in women aged 18 and older
FAQS

Do I need to take PDE 5 inhibitor medicine?

No, Sildenafil does not, but may be used to treat the following conditions the body needs.

When should I take Sildenafil?

Sildenafil is processed by the kidney ( nephrotic syndrome) and muscle.

How long does it take for Sildenafil to work?

Sildenafil starts working within 30 minutes of taking the medicine and may take up to 4 hours for most patients

Is Sildenafil for overnight dosing?

Yes. Sildenafil can be taken with or without food.

Viagra 50mg tablet contains an active component such as Sildenafil. This medication is used to treat erectile dysfunction (ED) in men. It contains the active ingredient sildenafil citrate, which belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. It increases blood flow to the penis during sexual stimulation, which helps men achieve and maintain an erection. Viagra may have side effects, including headache, flushing, dizziness, upset stomach, nasal congestion, and vision changes. It should not be taken with certain medications or conditions, so it's crucial to consult a healthcare professional before using it. Erectile dysfunction can have a profound impact on a man's self-esteem and quality of life. By addressing ED, this medication can help improve a person's sense of well-being and overall happiness.

Individuals with a history of cardiovascular diseases, such as heart problems (angina, heart failure, irregular heartbeats) or recent heart attack, should exercise caution when using Viagra. The sexual activity itself can strain the heart and can further increase the strain by increasing blood flow. Consult with a healthcare professional to assess the risks and benefits in such cases. This medication can cause a mild decrease in blood pressure. Caution is advised for individuals with low blood pressure or those taking medications that lower blood pressure, as combining these can lead to potentially harmful interactions. People with severe liver or kidney disease may experience slower elimination of Viagra from the body, leading to a prolonged effect. Dosage adjustments may be necessary in such cases.

I've been taking Viagra for about 2 years now and I've been very responsive and attentive to what was going on. I could only see my erections when I was aroused. I felt very aroused and aroused for more than 3 hours. I didn't have any issues with my libido, but I felt very tired and tired and I was having some difficulty with my ejaculation. I felt very tired and tired and was worried about what would happen when I ejaculated. I couldn't sleep because my penis wasn't rigid enough. I've tried taking Viagra with food but that didn't help. I had to try and get up at night and go to the bathroom because I felt dizzy and lightheaded. I couldn't get my penis to make enough blood flow. I couldn't get my hands on my trousers or a coat because I wasn't very good at getting in shape. I was very tired and tired and felt weak. I had a lot of difficulty with my ejaculation, which was pretty concerning. I tried taking Viagra with a big meal and it didn't help at all. I also didn't get enough blood flow to go around my penis, which I was very unhappy about. I went to the bathroom and saw that I was weak and very tired and couldn't get up. I also didn't get enough blood flow to go around my penis. I felt dizzy and lightheaded and needed to go to the bathroom. I was very unhappy about it and felt very weak. I went to the bathroom and saw that I was weak and couldn't get up.