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How should I take oxacillin?

Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.

Take the medicine with a full glass of water. Oxacillin should be taken on an empty stomach, at least 1 hour before or 2 hours after eating a meal.

To be sure this medication is helping your condition, your blood will need to be tested on a regular basis. Your kidney or liver function may also need to be tested. Do not miss any scheduled visits to your doctor.

Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Oxacillin will not treat a viral infection such as the common cold or flu. Do not give oxacillin to another person, even if they have the same symptoms you do.

This medication can cause you to have unusual results with certain medical tests. Tell any doctor who treats you that you are using oxacillin.

Store oxacillin at room temperature away from moisture, heat, and light.

What happens if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention if you think you have used too much of this medicine.

Symptoms of an oxacillin overdose may include confusion, behavior changes, a severe skin rash, urinating less than usual, or seizure (black-out or convulsions).

What should I avoid while taking oxacillin?

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or has blood in it, call your doctor. Do not use any medicine to stop the diarrhea unless your doctor has told you to.

What are the possible side effects of oxacillin?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have any of these serious side effects:

• fever, sore throat, and headache with a severe blistering, peeling, and red skin rash;

• diarrhea that is watery or bloody;

• fever, chills, body aches, flu symptoms;

• easy bruising or bleeding, unusual weakness;

• urinating less than usual or not at all;

• severe skin rash, itching, or peeling;

• agitation, confusion, unusual thoughts or behavior; or

• seizure (black-out or convulsions).

Less serious side effects are more likely to occur, such as:

• nausea, vomiting, stomach pain;

• vaginal itching or discharge;

• headache;

• swollen, black, or "hairy" tongue; or

• thrush (white patches or inside your mouth or throat).

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

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