Clenbuterol is a sympathomimetic amine and has been the subject of intensive research in both humans and domestic animals. Due to its chemical structure, a high degree of selectivity for the beta-2 receptor sites in the body has been achieved providing intense bronchodilating properties with minimal effect on the cardiovascular system. The duration of effects of Clenbuterol Hydrochloride Injection is long-lasting and in the range of 6-8 hours after a single application. Clenbuterol Hydrochloride 30mcg/ml Indications: Clenbuterol Injection is used for the treatment of respiratory disease in horses where it is considered that airway obstruction is due to bronchospasm. In cases accompanied by pyrexia, the parenteral administration of chemotherapeutic and/or anti-infective agents is recommended. Dosage and Administration: Twice daily administration of 0.8 mcg of Clenbuterol Injection per kg body weight. This is equivalent to 1.25 mL (containing 30 mcg [0.03 mg] per ml) per 50 kg body weight given by SLOW intravenous injection. Use aseptic technique. Effects last as long 8 hours after a single dose, 12 hours on repeated twice daily dosing. Contraindications: Due to a potential risk of increasing the peripheral vasodilating effect of clenbuterol, it is not recommended that corticosteroids be used in conjunction with Clenbuterol Injection. Clenbuterol Hydrochloride Injection antagonizes the effects of prostaglandin F2? and oxytocin. The action of Clenbuterol Injection is antagonized by adrenergic blocking agents. Caution: If used during pregnancy, Clenbuterol Injection must be discontinued at the expected time of delivery, since uterine contractions may be abolished under its influence. The effect on fertility of breeding stallions has not been determined. Side Effects: Infrequently, transient sweating, muscle tremors and mild tachycardia have been observed following intravenous administration. In each instance, the symptoms abated without complications or additional treatment. Storage: Store below 25 C (Air Conditioning) and protect from light.