Tetracyclines are a group of broad-spectrum antibiotic compounds that have a common basic structure and are either isolated directly from several species of Streptomyces bacteria or produced semi-synthetically from those isolated compounds. Tetracycline molecules comprise a linear fused tetracyclic nucleus (rings designated A, B, C and D) to. This learning module was developed based on a needs survey sent to all third year medicine clerkship directors and all medicine residency program directors in the United States. Medicine - Herb/Food Interactions. Herbs and Foods May Lead to Complications If You Take Them with Drugs. Many people have the mistaken notion that, being natural, all herbs and foods are safe. For treating most types of common bacterial infections, the recommended tetracycline dosage is 250 mg or 500 mg, four times daily for 7 to 14 days. Severe diarrhea may occur in some people on tetracycline. This eMedTV page lists other tetracycline precautions and warnings, such as possible drug interactions and the safety of taking this drug if you are nursing or have kidney disease or failure. Comprehensive alcohol & food interactions for isotretinoin. Includes High Cholesterol (Hyperlipoproteinemia, Hypertriglyceridemia, Sitosterolemia), Obesity Find patient medical information for Tetracycline Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Minimum Inhibitory Concentrations (mcg/mL) Disk Diffusion (zone diameter in mm) Pathogen. S. I. R. S. I. R. Enterobacteriaceae. M100 standard is recognized. Acinetobacter spp. Do not take iron supplements, multivitamins, calcium supplements, antacids, or laxatives within 2 hours before or after taking tetracycline. These products can make tetracycline less effective in treating your infection. Tetracycline Antibiotic Class: Tetracyclines. Antimicrobial Spectrum: Staphylococcus aureus, Streptococcus pneumonia, Streptococcus pyogenes, Streptooccus agalacticae.