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Side effects

Although the most common side effect of Viagra Connect is a headache, it’s important to encourage men to read the Patient Information Leaflet (PIL). If someone comes into the pharmacy for a repeat purchase, remember to ask them if they have noticed any side effects, such as headache or nausea.

Possible side effects of Viagra Connect

Like all medicines, Viagra Connect can cause side effects, although not everybody gets them. These side effects are usually mild to moderate and should not last very long. 

Advise men to STOP TAKING Viagra Connect and seek medical attention immediately if they experience any of the following serious side effects:

  • Chest pains: these are uncommon. If chest pains occur before, during or after sexual activity, advise men to get into a semi-sitting position and try to relax. Do NOT use nitrates to treat the chest pain.
  • A prolonged and sometimes painful erection lasting longer than 4 hours: this rarely occurs, but it’s important to seek medical advice if this happens.
  • A sudden decrease or loss of vision: this occurs rarely.
  • An allergic reaction: this is uncommon. Symptoms include sudden wheeziness, difficulty breathing or dizziness, swelling of the eyelids, face, lips or throat.
  • Serious skin reactions, such as Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Syndrome (TEN): this occurs rarely. Symptoms may include severe peeling and swelling of the skin, blistering of the mouth, genitals and around the eyes and fever.
  • Seizures or fits: this occurs rarely.

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

  • Headache

Common (may affect up to 1 in 10 people)

  • Nausea, indigestion, stuffy nose, dizziness.
  • Facial flushing, hot flush (a sudden feeling of heat in your upper body).
  • Colour tinge to vision, blurred vision, visual disturbance.

Uncommon (may affect up to 1 in 100 people):

  • Vomiting, upper abdominal pain, acid reflux (including heartburn).
  • Skin rash, pain in the arms or legs, nosebleed, feeling hot, feeling tired (fatigue).
  • Eye irritation, bloodshot eyes/red eyes, eye pain, seeing flashes of light, visual brightness, light sensitivity, watery eyes.
  • Pounding heartbeat, rapid heartbeat.
  • High blood pressure.
  • Low blood pressure (typical signs are dizziness, fainting, blurred vision, nausea and tiredness).
  • Muscle pain, feeling sleepy, reduced sense of touch, vertigo, ringing in the ears.
  • Dry mouth, blocked or stuffy sinuses, inflammation of the lining of the nose (can be experienced as runny nose, sneezing and stuffy nose).
  • Presence of blood in urine.

Rare (may affect up to 1 in 1000 people):

  • Fainting, dry nose, swelling of the inside of the nose, feeling irritable and sudden decrease or loss of hearing.
  • Sudden unexpected death caused by loss of heart function (sudden cardiac arrest), stroke, heart attack, chest pains (angina), irregular heartbeat, temporary decreased blood flow to parts of the brain.
  • Feeling of tightening of the throat, numb mouth.
  • Bleeding at the back of the eye, double vision, reduced sharpness of vision, abnormal sensation in the eye, swelling of the eye or eyelid, small particles or spots in your vision, seeing halos around lights, dilation of the pupil of the eye, discolouration of the white of the eye.
  • Penile bleeding, presence of blood in semen.