The medication, available by prescription as scored tablets, is FDA approved for use in dogs only. The standard dosage is based on weight. For dogs up to 10 lbs, give 0.5 tablet; 1 tablet for dogs weighing 11 – 20 lbs, 2 tablets for dogs weighing 21 – 40 lbs and 3 tablets for dogs weighing over 40 lbs. The medication should be given every 12 hours. The dosage should be reduced to 1/2 of the initial dose after four days or to a quantity just sufficient to sustain reduction of symptoms.