That's not an antibiotic. Antibiotics are drugs that kill or inhibit bacteria. For example, penicillin, cephalosporin, amoxicillin, erythromycin, clarithromycin, streptomycin, gentamicin, norfloxacin, etc. are all antibiotics. Antibiotics are prescription drugs. You can buy it in regular pharmacies with a prescription slip from a doctor (of course, the following pharmacies are another matter). You are not talking about antibiotics. The medicine box has the word OTC on it and is used to relieve cold symptoms. Since colds are mostly caused by viruses, antibiotics only kill bacteria but not viruses, so they have basically no effect on colds. There are no specific antiviral drugs, so colds usually heal on their own. When symptoms are severe, just take some over-the-counter medicines.