1. Do not give as a dry pill or capsule. Give with a moist treat or small amount of liquid to be sure the medication reaches the stomach; this is especially important for cats. Doxycycline can cause ulcers in the throat and esophagus if it gets stuck before it reaches the stomach. If your animal has trouble swallowing or eating, contact your veterinarian immediately.
2. May upset stomach. Give with a small amount of food that does not contain iron or dairy products.
3. Do not give multivitamins, calcium supplements, antacids, or laxatives within 2 hours before or after giving doxycycline as these products reduce the drug’s effectiveness.
4. This drug may make your animal’s skin more sensitive to sunlight and increase the risk for sunburn on hairless areas (eg, nose, around the eyelids and ears). Tell your veterinarian if you notice any reddening or sun burning of the skin.