However, if someone hands you something to take for your headache, you had better be sure you are getting what you think you are getting. Though many will not give you the wrong pills on purpose, this is something that can happen. They could accidentally give you a prescription that could harm you, or give you something that has nothing to do with your problem. If you can identify the pills, you will know if you can take or if you should throw out. Pill identification comes in real handy if you are taking prescription drugs. If you are not sure what your drug should look like, you should make sure you find out. You may get your prescriptions mixed up, or the pharmacy may make a mistake and give you the wrong thing.