Theophylline is a bronchodilator used to open air passages in the lung. By relaxing the smooth muscle of the lungs and chest, it makes it easier for the pet to breathe. It is used in the treatment of heart failure, pulmonary edema, bronchial asthma and chronic obstructive pulmonary disease. It should not be used in pregnant or nursing animals. The medication is best given on an empty stomach. These tablets must be swallowed whole and should not be chewed or crushed. Generic for brand name Theolair (UCB Pharma), Theo-Dur (Key), Uniphyl (Purdue Pharma).
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