Omnipen

 
Generic Name: ampicillin

Brands: Omnipen, Principen, Totacillin

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What is the most important information I should know about Omnipen?

· Take all of the Omnipen that has been prescribed for you even if you begin to feel better. Your symptoms may begin to improve before the infection is completely treated.

· Do not break, chew, open, or crush the capsules. Swallow them whole.

· Omnipen may decrease the effectiveness of birth control pills. Use a second method of birth control while taking Omnipen to protect against pregnancy.

 

What is Omnipen?

· Omnipen is an antibiotic in the class of drugs called penicillins. Omnipen fights bacteria in your body.

· Omnipen is used to treat many different types of infections, such as tonsillitis, pneumonia, bronchitis, urinary tract infections, gonorrhea, and infections of the intestines such as salmonella (food poisoning).

· Omnipen may also be used for purposes other than those listed in this medication guide.

 

Who should not take Omnipen?

· If you have ever had an allergic reaction to another penicillin or to a cephalosporin, do not take Omnipen unless your doctor is aware of your allergy and monitors your therapy.

· Before taking this medication, tell your doctor if you have kidney disease, stomach or intestinal disease, or infectious mononucleosis. You may not be able to take Omnipen because of an increased risk of side effects.

· If you are a diabetic, some glucose urine tests may give false positive results while you are taking Omnipen.

· Omnipen is in the FDA pregnancy category B. This means that it is unlikely to harm an unborn baby. Omnipen is generally considered to be safe for use during pregnancy. Do not, however, take this medication without first talking to your doctor if you are pregnant.

· Omnipen passes into breast milk. Rarely, Omnipen may cause a yeast infection, diarrhea, or allergic reaction in a nursing infant, although no serious harm is expected. Do not take this medication without first talking to your doctor if you are breast-feeding a baby.

 

How should I take Omnipen?

· Take Omnipen exactly as directed by your doctor. If you do not understand the instructions, ask your nurse, doctor, or pharmacist to explain them to you.

· Take each dose with a full glass of water.

· Take Omnipen on an empty stomach 1 hour before or 2 hours after meals.

· Omnipen should be taken at evenly spaced intervals throughout the day and night to keep the level in your blood high enough to treat the infection.

· Do not crush, chew, or open the Omnipen capsules. Swallow them whole.

· Shake the liquid form of Omnipen well before measuring a dose. To ensure that you get a correct dose, measure the suspension with a dose-measuring spoon or cup, not a regular tablespoon. If you do not have a dose-measuring device, ask your pharmacist where you can get one.

· Take all of the Omnipen that has been prescribed for you even if you begin to feel better. Your symptoms may start to improve before the infection is completely treated.

· Store the tablets and capsules at room temperature and store the suspension in the refrigerator for longer use. The suspension is good for 7 days at room temperature and for 14 days if it is stored in the refrigerator. Throw away any unused liquid after this amount of time.

 

What happens if I miss a dose?

· Take the missed dose as soon as you remember. However, if it is almost time for your next dose, skip the dose you missed and take only your next regularly scheduled dose. Do not take a double dose of this medication unless otherwise directed by your doctor.

· If you have only missed one dose, you can take the rest of your scheduled doses for the day at evenly spaced intervals.

 

What happens if I overdose?

· Seek emergency medical attention.

· Symptoms of an Omnipen overdose include muscle spasms or weakness, pain or twitching, pain in the fingers or toes, loss of feeling in the fingers or toes, seizures, confusion, coma, and agitation.

 

What should I avoid while taking Omnipen?

· Alcohol may irritate your stomach if taken with Omnipen, so use it with moderation.

 

What are the possible side effects of Omnipen?

· If you experience any of the following serious side effects, stop taking Omnipen and seek emergency medical attention:     ·an allergic reaction (shortness of breath; closing of your throat; hives; swelling of your lips, face, or tongue; rash; or fainting);     ·seizures;     ·severe watery diarrhea and abdominal cramps; or     ·unusual bleeding or bruising.

· Other, less serious side effects may be more likely to occur. Continue to take Omnipen and talk to your doctor if you experience     ·mild nausea, vomiting, diarrhea, or abdominal pain;     ·white patches on the tongue (thrush/yeast infection);     ·itching or discharge of the vagina (vaginal yeast infection); or     ·black, "hairy" tongue or sore mouth or tongue.

· 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.

 

What other drugs will affect Omnipen?

· Some drugs may decrease the effects of Omnipen and prevent it from properly treating your infection. Before taking Omnipen, tell your doctor if you are taking any of the following drugs:     ·cholestyramine (Questran) or colestipol (Colestid); or     ·another antibiotic (for the same or for a different infection) such as erythromycin (Ery-Tab, E-Mycin, E.E.S., others), tetracycline (Sumycin, others), minocycline (Minocin), doxycycline (Doryx, Vibramycin, others), or any other.

· Omnipen may decrease the effectiveness of birth control pills. Use a second method of birth control while taking Omnipen to protect against pregnancy.

· Omnipen increases the effects of methotrexate, and you may need a dose adjustment during therapy with Omnipen.

· Omnipen also increases the side effects of allopurinol (Zyloprim) and may cause a rash.

· Probenecid (Benemid) increases the effects of Omnipen. These drugs may be used together for this purpose; however, be sure your doctor is aware if you are taking probenecid. You may need a lower dose of Omnipen.

· Drugs other than those listed here may also interact with Omnipen. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

 

Where can I get more information?

· Your pharmacist has additional information about Omnipen written for health professionals that you may read.

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