Dormosedan should not be used in horses with pre-existing AV or SA block, with severe coronary insufficiency, cerebrovascular disease, respiratory disease, or chronic renal failure. Intravenous potentiated sulfonamides should not be used in anesthetized or sedated horses as potentially fatal dysrhythmias may occur.
Information on the possible effects of detomidine hydrochloride in breeding horses is limited to uncontrolled clinical reports; therefore, this drug is not recommended for use in breeding animals.
Dormosedan is not for use in horses intended for food.
Before administration, careful consideration should be given to administering Dormosedan to horses approaching or in endotoxic or traumatic shock, to horses with advanced liver or kidney disease, or to horses under stress from extreme heat, cold, fatigue, or high altitude. Protect treated horses from temperature extremes. Some horses, although apparently deeply sedated, may still respond to external stimuli. Routine safety measures should be employed to protect practitioners and handlers. Allowing the horse to stand quietly for 5 minutes before administration and for 10-15 minutes after injection may improve the response to Dormosedan.
Dormosedan is a potent α2-agonist, and extreme caution should be exercised in its use with other sedative or analgesic drugs for they may produce additive effects.
When using any analgesic to help alleviate abdominal pain, a complete physical examination and diagnostic work-up are necessary to determine the etiology of the pain.
Food and water should be withheld until the sedative effect of Dormosedan has worn off.
Occasional reports of anaphylactic-like reactions have been received, including 1 or more of the following: urticaria, skin plaques, dyspnea, edema of the upper airways, trembling, recumbency, and death. The use of epinephrine should be avoided since epinephrine may potentiate the effects of α2-agonists. Reports of mild adverse reactions have resolved uneventfully without treatment. Severe adverse reactions should be treated symptomatically. As with all α2-agonists, the potential for isolated cases of hypersensitivity exist, including paradoxical response (excitation).Side Effects:
Horses treated with Dormosedan exhibit hypertension. Bradycardia routinely occurs 1 minute after injection. The relationship between hypertension and bradycardia is consistent with an adaptive baroreceptor response to the increased pressure and inconsistent with a primary drug-induced bradycardia. Piloerection, sweating, salivation, and slight muscle tremors are frequently seen after administration. Partial transient penis prolapse may be seen. Partial AV and SA blocks may occur with decreased heart and respiratory rates. Urination typically occurs during recovery at about 45-60 minutes posttreatment, depending on dosage. Incoordination or staggering is usually seen only during the first 3-5 minutes after injection, until animals have secured a firm footing.Because of continued lowering of the head during sedation, mucus discharges from the nose and, occasionally, edema of the head and face may be seen. Holding the head in a slightly elevated position generally prevents these effects.
Store at controlled room temperature 15°-30°C (59°-86°F) in the absence of light.
How Supplied: Dormosedan is supplied in 5 ml and 20 ml multidose vials.
Federal law restricts this drug to use by or on the order of a licensed veterinarian
Pfizer Animal Health