Penicillin G benzathine (By injection)
Penicillin G Benzathine (pen-i-SIL-in G BEN-za-theen)
Treats infections and prevents rheumatic fever, chorea, rheumatic heart disease, or acute glomerulonephritis. This medicine is an antibiotic.
Bicillin L-AThere may be other brand names for this medicine.
When This Medicine Should Not Be Used:This medicine is not right for everyone. You should not receive it if you had an allergic reaction to penicillin.
How to Use This Medicine:
- Your doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles. It is usually given in the upper buttock or hip area.
- A nurse or other health provider will give you this medicine.
- Missed dose: This medicine needs to be given on a fixed schedule. If you miss a dose, call your doctor, home health caregiver, or treatment clinic for instructions.
Drugs and Foods to Avoid:
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
- Some medicines can affect how penicillin G benzathine works. Tell your doctor if you are using probenecid or other medicine to treat an infection (including tetracycline).
Warnings While Using This Medicine:
- Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease or a history of asthma or allergies, including a previous allergic reaction to a cephalosporin antibiotic.
- This medicine may cause serious skin reactions, including Stevens-Johnson syndrome, toxic epidermal necrolysis, drug reaction with eosinophilia and systemic symptoms (DRESS), or acute generalized exanthematous pustulosis (AGEP).
- This medicine can cause diarrhea. Call your doctor if the diarrhea becomes severe, does not stop, or is bloody. Do not take any medicine to stop diarrhea until you have talked to your doctor. Diarrhea can occur 2 months or more after you stop taking this medicine. It may occur 2 months or more after you stop using this medicine.
- Call your doctor if your symptoms do not improve or if they get worse.
- Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Possible Side Effects While Using This Medicine:
Call your doctor right away if you notice any of these side effects:
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
- Blistering, peeling, red skin rash
- Change in how much or how often you urinate, bloody or cloudy urine, difficult or painful urination
- Diarrhea that may contain blood, stomach pain
- Fever, chills, headache, stiffness, sweating
- Numbness, tingling, or burning pain in your hands, arms, legs, or feet
- Unusual bleeding, bruising, or weakness
If you notice these less serious side effects, talk with your doctor:
- Pain, itching, burning, swelling, or a lump under your skin where the shot was given
If you notice other side effects that you think are caused by this medicine, tell your doctor
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088
Last Updated: 3/6/2023