Xyloproct is intended for use for limited periods. Excessive dosage of lidocaine or short intervals between doses, may result in high plasma levels of lidocaine and serious adverse effects. Patients should be instructed to strictly adhere to recommended dosage.
Hospitalised patients treated with anti-arrhythmic drugs class III (e.g. amiodarone or sotalol) should be kept under close surveillance and ECG monitoring considered, since cardiac effects may be additive (see sections 4.3 and 4.5).
Appropriate antibacterial, antiviral or antifungal therapy should be given with Xyloproct if infection is present at the site of application.
The possibility of malignancy should be excluded before use.
If irritation or rectal bleeding develops treatment should be discontinued.
When using the special applicator, care should be taken to avoid instillation of excessive amounts of Xyloproct Ointment into the rectum. This is of particular importance in infants and children.
Systemic absorption of lidocaine may occur from the rectum, and large doses may result in CNS side-effects. On rare occasions convulsions have occurred in children.
Prolonged and excessive use of hydrocortisone use may produce systemic corticosteroid effects or local effects such as skin atrophy. With the recommended dosage systemic effects of hydrocortisone are unlikely.
Xyloproct ointment is possibly porphyrinogenic and should only be prescribed to patients with acute porphyria when no safer alternative is available. Appropriate precautions should be taken for vulnerable patients.
Xyloproct contains cetyl alcohol and stearyl alcohol, which may cause local skin reactions (e.g. contact dermatitis).