Whether or not you can take ibuprofen after a flu shot cannot be generalized, if you are getting a fever-reducing shot, then you should not take ibuprofen within 4 to 6 hours. Ibuprofen is a drug with antipyretic, analgesic, and anti-inflammatory properties, and can be symptomatic for fever caused by colds. A small number of people using ibuprofen may experience adverse reactions such as vomiting, nausea, burning stomach discomfort and indigestion. The use of ibuprofen should be noted that ibuprofen belongs to the symptomatic treatment of drugs, is not suitable for long-term use of drugs or a large number of drugs. You should not take other drugs containing antipyretic and analgesic at the same time you use this drug. Ibuprofen needs to be contraindicated in pregnant women, breastfeeding women, people who are allergic to the drug, asthmatics who are allergic to aspirin. Colds are a very commonly referenced respiratory disease, and some people may be treated with injections after becoming ill. For the cold patients who have been injected, if they are playing a fever-reducing injection, then a short period of time can not eat ibuprofen, so as not to two fever-reducing drug effects caused by abnormal adverse reactions, but if the injection six hours after the temperature still did not fall, you can follow the doctor’s advice to take ibuprofen. However, if the injection is not antipyretic injection, after the injection can use ibuprofen for symptomatic treatment. Individuals should not abuse ibuprofen and should consult a professional physician or pharmacist before using the drug to avoid adverse consequences.