Side effects according to the leaflet:

		90%		Dryness of the mouth...
		80%		...and nose <which usually leads to nose-bleeds>
		40%		Dryness in the eyes
		15%		Muscle pains, joint pains
		10%		Thining or shedding hair <temporary>
		5%		Sensitivity to the sun
		?%		Birth defects
		?%		Skin peeling
		?%		Hoarseness
		?%		Blurring and dizziness
		?%		Falling asleep during the day

Side effects that require special attention according to the leaflet:

		7%		Skin rash
		5%		Strong Headaches
		1%		DEPRESSION
		?%		Peeling or inflammation of the lips
		?%		Nose bleeds
		?%		Visual changes
		?%		Eye inflammation

Other side effects according to the web:

		80%		Skin dryness and some itchiness
		5%		Stomach aches \ Diarrhea
		5%		Feeling of burn while urinating
		1%		Damage to night vision
		?%		Damage to the liver
		?%		Immune disfunction
		?%		Chronic fatigue
		?%		Gastrointestinal problems
		?%		Psychiatric problems (other than depression)
		?%		Neurological disfunction

Side effects that I have experienced:

		?%		Insomnia
		?%		Feeling of dehydration