PDR Drug Summaries are concise pointofcare prescribing, dosing and administering information to help phsyicans more efficiently and accurately prescribe in their. Learn about Levaquin (Levofloxacin) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Detailed dosage guidelines and administration information for Levaquin (levofloxacin). Includes dose adjustments, warnings and precautions. Professional guide for Norfloxacin. Includes: pharmacology, pharmacokinetics, contraindications, interactions, adverse reactions and more. Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. Worst Pills, Best Pills is a project of Public Citizen's Health Research Group. As an independent, nonprofit organization, we take no corporate or government. oral tablet is a prescription medication thats used to treat bacterial infections. Its a type of drug called a fluoroquinolone antibiotic. Doxycycline (Doxy) Interactions. Antacids (containing aluminum, calcium, or magnesium), calcium or magnesium supplements, products. 250 mg in 50 mL 500 mg in 100 mL 750 mg in 150 mL CONTRAINDICATIONS Known hypersensitivity to LEVAQUIN Joanne and Erin describe their experiences on the fluoroquinolone antibiotics Cipro (ciprofloxacin) and Levaquin (levofloxacin). Pictures of Levaquin (Levofloxacin), drug imprint information, side effects for the patient. Mixing prescription drugs with overthecounter drugs, supplements and certain foods can lead to dangerous interactions and reactions..