Doxycycline Hyclate package insert / prescribing information for healthcare professionals. Includes: indications, dosage, adverse reactions and pharmacology. Know what Doxycycline Hyclate is used for, how to take it, and which side effects to expect when starting it. Doxycycline, doxycycline monohydrate and doxycycline hyclate are yellow, crystalline powders with a bitter taste. The latter smells faintly of ethanol, a 1% aqueous solution has a pH of 2–3, and the specific rotation is −110° cm 3 /dm·g in 0.01 N methanolic hydrochloric acid. Learn about doxycycline hyclate usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Doxycycline is used to treat bacterial infections in many different parts of the body. It is also used to treat pimples and abscesses (usually on the face) that are caused by rosacea, also known as acne rosacea or adult acne. Read on to learn about the common and rare side effects of doxycycline and how to manage them. Doryx (Doxycycline Hyclate) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Doxycycline Hyclate (Doxycycline Hyclate Delayed-release Tablets ) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Find patient medical information for Doxycycline on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Doxycycline is a tetracycline antibiotic that inhibits bacterial growth and is thought to have anti-inflammatory effects. Doxycycline is used for bacterial infections, including acne, rosacea, urinary and respiratory tract infections, eye infections, gum disease, gonorrhea, chlamydia, and syphilis.