Shipping restrictions: This item cannot ship to California Doxycycline 20% Powder is an excellent broad spectrum antibiotic which aids in the treatment and prevention of bacterial respiratory infections such as ornithosis and mycoplasmosis in pigeons, cage birds, and pet chickens.  Ingredients 20 g of Doxycycline Hcl per 100 g Dosage Instructions 1 teaspoon (5 grams) per 1 gallon of drinking water for 7-10 consecutive days. Change water daily. A probiotic is recommended and should be administered after the treatment.   Warning: This product is formulated for pet birds only. Do not use on livestock and other animals whose meat or eggs are intended for human consumption. Please keep away from children and other pets.  Size 100g resealable pouch