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Dynapen

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Dynapen

Discontinued Warning IconPlease Note: This Brand Name drug is no longer available in the US.
(Generic versions may still be available.)

Dynapen

Dynapen Patient Information Including Side Effects

Brand Names: Dycill, Dynapen

Generic Name: dicloxacillin (Pronunciation: dye klox a SIL in)

What is dicloxacillin (Dynapen)?

Dicloxacillin is an antibiotic in the penicillin group of drugs. It fights bacteria in your body.

Dicloxacillin is used to treat many different types of infections caused by bacteria such as bronchitis, pneumonia, or staphylococcal (also called "staph") infections.

Dicloxacillin may also be used for other purposes not listed in this medication guide.

Dicloxacillin 250 mg-APH

turquoise, imprinted with SQUIBB W048

Dicloxacillin 250 mg-TEV

green, imprinted with 93 3123

Dicloxacillin 500 mg-APH

turquoise, imprinted with SQUIBB W058

Dicloxacillin 500 mg-TEV

green, imprinted with 93 3125

What are the possible side effects of dicloxacillin (Dynapen)?

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:

  • nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • 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 may include:

  • nausea, vomiting, stomach pain;
  • vaginal itching or discharge;
  • headache;
  • swollen, black, or "hairy" tongue; or
  • thrush (white patches or inside your mouth or throat).

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.

Read the Dynapen (dicloxacillin) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about dicloxacillin (Dynapen)?

Do not use this medication if you are allergic to dicloxacillin or to any other penicillin antibiotic, such as amoxicillin (Amoxil), ampicillin (Omnipen, Principen), carbenicillin (Geocillin), oxacillin (Bactocill), penicillin (Beepen-VK, Ledercillin VK, Pen-V, Pen-Vee K, Pfizerpen, V-Cillin K, Veetids), and others.

Before using dicloxacillin, tell your doctor if you are allergic to cephalosporins such as Ceclor, Ceftin, Duricef, Keflex, and others, or if you have asthma, liver disease, kidney disease, or a history of any type of allergy.

Dicloxacillin can make birth control pills less effective, which may result in pregnancy. Before taking dicloxacillin, tell your doctor if you use birth control pills.

Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Dicloxacillin will not treat a viral infection such as the common cold or flu.

Do not share this medication with another person, even if they have the same symptoms you have.

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.

Side Effects Centers
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Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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