Let's take a minute to talk about your medication. 

This is clarithromycin. It's an antibiotic that treats infections caused by bacteria. It cannot treat infections caused by viruses, like the common cold.

You should take this medicine exactly how your doctor tells you. You can take it with or without food. If you are taking the liquid form, be sure to measure it with a measuring spoon, and not a household teaspoon. Also, you should shake the bottle before each dose and do not refrigerate it. 
It is important to not miss doses, and to take it for as long as your doctor recommends. 

Most people tolerate this medicine well. Common side effects include nausea, an upset stomach, diarrhea, and a change in the way food tastes. You could also feel a little dizzy. You should wait until you know how this medicine affects you before doing activities that require you to be alert, like driving. These side effects are normal if they are mild and should go away. If these or other reasons make you want to stop taking this medicine, please talk to your doctor or pharmacist.

As with any medicine, more serious side effects could occur. You should tell your doctor right away if you notice unusual changes to your body. Also, tell your doctor if you have diarrhea that is bloody or lasts for more than 2 days. If you have heart disease, you should ask your doctor if this is the best antibiotic for you. 

This antibiotic can interact with other medicines. You should always check with your doctor or pharmacist before taking other medicines.

Clarithromycin is not considered safe for unborn babies.

For best results with this medicine, try not to miss any doses.