Antibiotics are not an instant fix and will generally have to be taken for weeks or even months before the pimples clears up, additionally, you will have to continue the antibiotic even after the pimples clears up to avoid a re-occurrence. There are several relative side effect reported by using tetracycline, with extreme sensitivity to the sun being the most typical one. Anybody taking tetracycline needs to be very cautious about exposure to sunlight to avoid severe sunburns. Some individuals may experience nausea also, hives and even dizziness. Ladies undergoing treatment with tetracycline might notice a rise in vaginal yeast infections.Tests carried out in the laboratory revealed that tiny amounts of these proteins extracts killed a wide range of bacteria, including MRSA , the deadly bacterias which are now increasingly becoming problematic in the community outside the hospital setting. Related StoriesAmputation isn’t wound healingNew scientific chemistry analyzer released by EKF at Medica 2015Deaths from avoidable risk elements: an interview with Dr Ali Mokdad, IHMESuperbugs such as MRSA are such a problem because they’re resistant to multiple antibiotics and as a result cause thousands of deaths each season.