Doxycycline generally refers to doxycycline, the oral dosage form of doxycycline has tablets, capsules, eat doxycycline preparation to avoid alcohol-containing food, spicy stimulating food, greasy food, etc. 1, alcohol-containing food: doxycycline preparation is a tetracycline antibiotic, during the doxycycline preparation, need to avoid alcohol-containing food such as wine or wine heart chocolate, so as not to lead to the accumulation of acetaldehyde in the body Toxic reaction, manifested as facial flushing, dizziness, nausea, vomiting, etc., if not timely diagnosis and treatment, may be life-threatening; 2, spicy and irritating food: doxycycline preparation has a mild gastrointestinal irritation reaction, need to avoid spicy and irritating food, such as chili, garlic, etc., so as not to aggravate the gastrointestinal tract irritation, stomach pain, burning sensation and other symptoms; 3, greasy food: such as fatty meat, etc., so as not to increase the burden of the gastrointestinal tract, the Aggravate the stimulation of the gastrointestinal tract by doxycycline preparations. The metabolism of doxycycline preparation is mainly through the liver and kidneys, so patients need to nourish the liver and protect the liver in ordinary life, not to stay up late, regular work and rest. For patients with fatty liver, cirrhosis, and allergies, they need to pay attention to take doxycycline preparations under the guidance of doctors and not to use them blindly.