DESC: Zithromax is used to treat many different types of bacterial infections, such as bronchitis, pneumonia, tonsillitis, skin infections, ear infections, and sexually transmitted diseases. How Taken - Zithromax comes as a capsule, tablet, and liquid to take by mouth. It is usually taken once a day for 2-5 days. Take Zithromax exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Shake the liquid well before each use to mix the medication evenly. The capsules and tablets should be taken with a full glass of water. Continue to take Zithromax even if you feel well. Do not stop taking Zithromax without talking to your doctor. Take Zithromax liquid at least 1 hour before or 2 hours after meals. The capsule and tablet may be taken with or without food. If it upsets your stomach, take it with food.