Very common (affect more than 1 in 10 people)
Headache.
Common (affect between 1 in 10 and 1 in 100 people)
Dizziness.
Visual disturbances, such as blurred vision, blue tinge to vision.
Flushing.
Nasal congestion.
Indigestion.
Uncommon (affect between 1 in 100 and 1 in 1000 people)
Awareness of your heart beat (palpitations).
Increased heart rate (tachycardia).
Chest pain.
Muscle pain.
Sleepiness or fatigue.
Decreased sensation of the body to normal stimulation such as touch or pain.
Sensation of spinning.
Sensation of ringing or other noise in the ears (tinnitus).
Feeling sick or vomiting.
Dry mouth.
Rash.
Eye disorders such as bleeding at the back of the eye, bloodshot eyes/red eyes, eye pain, double vision, abnormal sensation in the eye.
Rare (affect between 1 in 1000 and 1 in 10,000 people)
Increased or decreased blood pressure.
Sudden decrease or loss of hearing.
Nosebleeds.
Fainting.
Stroke (cerebrovascular accident).
Frequency not known
Prolonged erection, or persistent painful erection of the penis (priapism).
Seizure.
Mini-stroke (transient ischaemic attack).
Unstable angina.
Abnormal heart beats (arrhythmias).
Severe allergic blistering skin reaction (Stevens-Johnson syndrome).
Severe flaking of the surface layer of the skin (toxic epidermal necrolysis).
Sudden death due to heart attack.
There you go OP! Enjoy your hard on.
