Medscape - Infection-specific dosing for Vibramycin, Doryx (doxycycline), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. Vibramycin (Doxycycline Calcium Oral) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Doxycycline (Vibramycin, Oracea, Adoxa, Atridox and Others) is a prescription drug used to treat a variety of infections. Common side effects of doxycycline may include nausea, diarrhea, abdominal pain, and more. Drug interactions, uses, dosage, and the effects on pregnancy and breastfeeding are provided. DESCRIPTION Vibramycin is an antibacterial drug synthetically derived from oxytetracycline, and is available as Vibramycin Monohydrate (doxycycline monohydrate); Vibramycin Hyclate and Vibra-Tabs (doxycycline hydrochloride hemiethanolate hemihydrate); and Vibramycin Calcium (doxycycline calcium) for oral administration. DESCRIPTION Vibramycin is an antibacterial drug synthetically derived from oxytetracycline, and is available as Vibramycin Monohydrate (doxycycline monohydrate); Vibramycin Hyclate and Vibra-Tabs (doxycycline hydrochloride hemiethanolate hemihydrate); and Vibramycin Calcium (doxycycline calcium) for oral administration. Find patient medical information for Doxycycline on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Doxycycline, sold under the brand names Vibramycin and Doryx, among others, is a broad-spectrum antibiotic of the tetracycline class used in the treatment of infections caused by bacteria and certain parasites. [1] It is used to treat bacterial pneumonia, acne, chlamydia infections, Lyme disease, cholera, typhus, and syphilis, [1] and is sometimes used to prevent malaria. [2][3] Doxycycline. In August 2025, Vibramycin® (capsule and oral liquid) and Vibra-Tabs® (tablets) were discontinued from the US market. Actilate®, Doryx®, Doxycycline, Oracea® (capsules, delayed-release capsules, delayed-release tablets, and tablets) are still available. Learn about the side effects of Vibramycin (doxycycline), from common to rare, for consumers and healthcare professionals. Get clear safety guidance for Vibramycin Calcium, including warnings, precautions, when to seek medical assistance, and how to use it correctly.