What is a Patient Information Leaflet and why is it useful?

The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine. It is written for patients and gives information about taking or using a medicine. It is possible that the leaflet in your medicine pack may differ from this version because it may have been updated since your medicine was packaged.

Below is a text only representation of the Patient Information Leaflet, the original can be viewed in PDF format using the link above.

The text only version may be available from RNIB in large print, Braille or audio CD. For further information call RNIB Medicine Leaflet Line on 0800 198 5000. The product code(s) for this leaflet are: PL 17780/0623, PL 17780/0625, PL 17780/0624.

Sildenafil 25mg, 50mg & 100mg film-coated tablets

Package leaflet: Information for the user

SILDENAFIL 25MG FILM-COATED TABLETS

SILDENAFIL 50MG FILM-COATED TABLETS

SILDENAFIL 100MG FILM-COATED TABLETS

Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.

  • Keep this leaflet. You may need to read it again.
  • If you have any further questions, please ask your doctor pharmacist or nurse.
  • This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours.
  • If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. See section 4.

What is in this leaflet:

1. What sildenafil is and what it is used for
2. What you need to know before you take sildenafil
3. How to take sildenafil
4. Possible side effects
5. How to store sildenafil
6. Contents of the pack and other information

1.What sildenafil is and what it is used for

The name of your medicine is Sildenafil 25mg, 50mg or 100mg film-coated tablets (referred to as sildenafil throughout this leaflet).

Sildenafil contains the active substance sildenafil which belongs to a group of medicines called phosphodiesterase type 5 (PDE 5) inhibitors. It works by helping to relax the blood vessels in your penis, allowing blood to flow into your penis when you get sexually excited. Sildenafil will only help you to get an erection if you are sexually stimulated.

Sildenafil is a treatment for adult men with erectile dysfunction, sometimes known as impotence. This is when a man cannot get, or keep a hard, erect penis suitable for sexual activity.

2.What you need to know before you take sildenafil

Do not take sildenafil

  • If you are taking medicines called nitrates, as the combination may lead to a dangerous fall in your blood pressure. Tell your doctor if you are taking any of these medicines which are often given for relief of angina pectoris (or “chest pain”). If you are not certain, ask your doctor or pharmacist.
  • If you are using any of the medicines known as nitric oxide donors such as amyl nitrite (“poppers”) as the combination may also lead to a dangerous fall in your blood pressure.
  • If you are allergic to sildenafil or any of the other ingredients of this medicine (listed in section 6).
  • If you have a severe heart or liver problem.
  • If you have recently had a stroke or a heart attack, or if you have low blood pressure.
  • If you have certain rare inherited eye diseases (such as retinitis pigmentosa).
  • If you have ever had loss of vision due to non-arteritic anterior ischaemic optic neuropathy (NAION)

Warnings and precautions

Talk to your doctor, pharmacist or nurse before taking sildenafil

  • If you have sickle cell anaemia (an abnormality of red blood cells), leukaemia (cancer of blood cells), multiple myeloma (cancer of bone marrow).
  • If you have a deformity of your penis or Peyronie’s Disease.
  • If you have problems with your heart. Your doctor should carefully check whether your heart can take the additional strain of having sex.
  • If you currently have a stomach ulcer, or a bleeding problem (such as haemophilia).
  • If you experience sudden decrease or loss of vision, stop taking sildenafil and contact your doctor immediately.

You should not use sildenafil with any other oral or local treatments for erectile dysfunction.

You should not take sildenafil if you do not have erectile dysfunction.

You should not take sildenafil if you are a woman.

Special considerations for patients with kidney or liver problems

You should tell your doctor if you have kidney or liver problems. Your doctor may decide on a lower dose for you.

Children and adolescents

Sildenafil should not be given to individuals under the age of 18.

Other medicines and sildenafil

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

Sildenafil film-coated tablets may interfere with some medicines, especially those used to treat chest pain. In the event of a medical emergency, you should tell your doctor or pharmacist that you have taken sildenafil and when you did. Do not take sildenafil with other medicines unless your doctor tells you that you can.

You should not take sildenafil if you are taking medicines called nitrates as the combination of these medicines may lead to a dangerous fall in your blood pressure.

Always tell your doctor or pharmacist if you are taking any of these medicines that are often used for the relief of angina pectoris (or “chest pain”).

You should not take sildenafil if you are using any of the medicines known as nitric oxide donors such as amyl nitrite (“poppers”) as the combination may also lead to a dangerous fall in your blood pressure.

If you are taking medicines known as protease inhibitors, such as for the treatment of HIV, your doctor may start you on the lowest dose (25mg) of sildenafil.

Some patients who take alpha-blocker therapy for the treatment of high blood pressure or prostate enlargement may experience dizziness or light-headedness which may be caused by low blood pressure upon sitting or standing up quickly. Certain patients have experienced these symptoms when taking sildenafil with alpha-blockers. This is most likely to happen within 4 hours after taking sildenafil. In order to reduce the chance that these symptoms might happen, you should be on a regular daily dose of your alpha-blocker before you start sildenafil. Your doctor may start you on a lower dose (25mg) of sildenafil.

Sildenafil with food, drink and alcohol

Sildenafil can be taken with or without food. However, you may find that sildenafil takes longer to start working if you take it with a heavy meal.

Drinking alcohol can temporarily impair your ability to get an erection. To get the maximum benefit from your medicine, you are advised not to drink excessive amounts of alcohol before taking sildenafil.

Pregnancy, breast feeding and fertility

Sildenafil is not indicated for use by women.

Driving and using machines

Sildenafil can cause dizziness and can affect vision. You should be aware of how you react to sildenafil before you drive or use machinery.

Sildenafil contains lactose

If you have been told by your doctor that you have an intolerance to some sugars, such as lactose, contact your doctor before taking sildenafil.

3.How to take sildenafil

Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure. The recommended starting dose is 50mg.

You should not take sildenafil more than once a day.

Do not take sildenafil film-coated tablets in combination with sildenafil containing orodispersible tablets.

You should take sildenafil about one hour before you plan to have sex. Swallow the tablet whole with a glass of water.

If you feel that the effect of sildenafil is too strong or too weak, talk to your doctor or pharmacist.

Sildenafil will only help you to get an erection if you are sexually stimulated. The amount of time sildenafil takes to work varies from person to person, but it normally takes between half an hour and one hour. You may find that sildenafil takes longer to work if you take it with a heavy meal.

If sildenafil does not help you to get an erection, or if your erection does not last long enough for you to complete sexual intercourse you should tell your doctor.

The tablet can be divided into equal halves.

If you take more sildenafil than you should:

You may experience an increase in side effects and their severity. Doses above 100 mg do not increase the efficacy.

You should not take more tablets than your doctor tells you to.

Contact your doctor if you take more tablets than you should.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4.Possible side effects

Like all medicines, this medicine can cause side effects although not everybody gets them. The side effects reported in association with the use of sildenafil are usually mild to moderate and of a short duration.

If you experience any of the following serious side effects stop taking sildenafil and seek medical help immediately:

  • An allergic reaction (this occurs rarely)
    Symptoms include sudden wheeziness, difficulty in breathing or dizziness, swelling of the eyelids, face, lips or throat.
  • Chest pains (this occurs uncommonly): If this occurs during or after intercourse
    • Get in a semi-sitting position and try to relax.
    • Do not use nitrates to treat your chest pain.
  • Prolonged and sometimes painful erections (frequency unknown). If you have an erection which lasts for more than 4 hours, you should contact a doctor immediately.
  • A sudden decrease or loss of vision (frequency unknown)
  • Serious skin reactions (frequency unknown). Symptoms may include severe peeling and swelling of the skin, blistering of the mouth, genitals and around the eyes, fever.
  • Seizures or fits (frequency unknown)

Other side effects:

Very common (may affect more than 1 in 10 people): headache.

Common (may affect up to 1 in 10 people): facial flushing, indigestion, effects on vision (including colour tinge to vision, light sensitivity, blurred vision or reduced sharpness of vision), stuffy nose, dizziness.

Uncommon (may affect up to 1 in 100 people): vomiting, skin rash, bleeding at the back of the eye, eye irritation, bloodshot eyes/red eyes, eye pain, double vision, abnormal sensation in the eye, watery eyes, pounding heartbeat, rapid heartbeat, muscle pain, feeling sleepy, reduced sense of touch, vertigo, ringing in the ears, nausea, dry mouth, penile bleeding, presence of blood in semen and/or urine, chest pain and feeling tired.

Rare (may affect up to 1 in 1,000 people): high blood pressure, low blood pressure, fainting, stroke, heart attack, irregular heartbeat, nosebleed and sudden decrease or loss of hearing.

Not known (frequency cannot be estimated from the available data): Additional side effects reported from post-marketing experience: Unstable angina (a heart condition), sudden death, temporary decreased blood flow to parts of the brain. Most, but not all, of the men who experienced these side effects had heart problems before taking this medicine. It is not possible to determine whether these events were directly related to sildenafil.

Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at www.mhra.gov.uk/yellowcard.

By reporting side effects you can help provide more information on the safety of this medicine.

5.How to store sildenafil

Keep this medicine out of the sight and reach of children.

This medicinal product does not require any special storage conditions.

Do not use this medicine after the expiry date which is stated on the carton, label and blister after “EXP”. The expiry date refers to the last day of that month.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What sildenafil contains

The active substance is sildenafil.

Each 25mg film-coated tablet contains 25mg of sildenafil (as 35.12mg sildenafil citrate).

Each 50mg film-coated tablet contains 50mg of sildenafil (as 70.24mg sildenafil citrate).

Each 100mg film-coated tablet contains 100mg of sildenafil (as 140.48mg sildenafil citrate).

The other ingredients are:

  • Tablet core : microcrystalline cellulose, calcium hydrogen phosphate (anhydrous), croscarmellose sodium, magnesium stearate
  • Tablet coating: lactose monohydrate, hypromellose, titanium dioxide (E171), triacetin, indigo carmine aluminium lake (E132)

What sildenafil looks like and contents of the pack

Sildenafil 25mg film-coated tablet

Blue coloured round, biconvex, film-coated tablets debossed with 124 on one side and J on the other side.

Sildenafil 50mg film-coated tablet

Blue coloured round, scored biconvex, film-coated tablets debossed with 125 on one side and J on the other side with the score line. The tablet can be divided into equal doses.

Sildenafil 100mg film-coated tablet

Blue coloured round, biconvex, scored film-coated tablets debossed with 126 on one side and J on the other side with the score line. The tablet can be divided into equal doses.

Sildenafil is supplied in the following pack sizes:

Sildenafil 25 mg film-coated tablets

PVC/Aluminium foil blisters in cartons of 1, 2, 4, 8, 12 or 24 film-coated tablets.

Sildenafil 50mg film-coated tablets

PVC/Aluminium foil blisters in cartons of 1, 2, 4, 8, 12, 24, 2x24 film-coated tablets.

Sildenafil 100mg film-coated tablets

PVC/Aluminium foil blisters in cartons of 1, 2, 4, 8, 12, 24, 2x24 film-coated tablets.

Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Marketing Authorisation Holder

Zentiva
One Onslow Street
Guildford
Surrey
GU1 4YS
UK

Manufacturer

Pharmadox Healthcare Ltd.
KW20A Kordin Industrial Park
Paola
PLA 3000
Malta

Or

S.C. Zentiva S.A.
50, Theodor Pallady Blvd.
032266
Bucharest
Romania

This leaflet was last revised in October 2015.

‘Zentiva’ is a registered trademark. © 2015 Zentiva.

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