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Lapen 12 Lac12LacUnit

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Jayson Pharmaceuticals Ltd.
Generic: Benzathine Penicillin
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descriptionSafety Advices
Consuming alcohol with Lapen 12 Lac does not cause any harmful side effects.
Lapen 12 Lac is generally considered safe to use during pregnancy. Animal studies have shown low or no adverse effects to the developing baby; however, ... View More
Lapen 12 Lac is safe to use during breastfeeding. Human studies suggest that the drug does not pass into the breastmilk in a significant amount and is n... View More
Lapen 12 Lac may cause side effects which could affect your ability to drive.
Lapen 12 Lac should be used with caution in patients with kidney disease. Dose adjustment of Lapen 12 Lac may be needed. Please consult your doctor.
There is limited information available on the use of Lapen 12 Lac in patients with liver disease. Please consult your doctor.
descriptionMedical Overview


Lapen 12 Lac is an antibiotic used to treat a variety of bacterial infections. It is effective in treating sore throat and sexually transmitted diseases... View More

Uses of Lapen 12 Lac

  • Bacterial infections
  • Syphilis
  • Prevention of rheumatic fever

Side effects of Lapen 12 Lac

  • Rash
  • Allergic reaction
  • Injection site reactions (pain, swelling, redness)

How to use Lapen 12 Lac

Your doctor or nurse will give you this medicine. Kindly do not self administer.

How Lapen 12 Lac works

Lapen 12 Lac is an antibiotic. It kills bacteria by preventing them from forming the bacterial protective covering (cell wall) which is needed for them ... View More

quick tipsQuick Tips
  • You have been prescribed Penidure LA 12 Injection for the treatment of bacterial infections.
  • It is given by an injection into a vein or muscle, or via a drip into a vein.
  • Finish the prescribed course, even if you start to feel better. Stopping it early may make the infection come back and harder to treat.
  • Diarrhea may occur as a side effect but should stop when your course is complete. Inform your doctor if it doesn't stop or if you find blood in your sto... View More
  • Inform your doctor immediately if you develop an itchy rash, swelling of the face, throat or tongue or breathing difficulties while taking this medicine... View More
descriptionBrief Description


Anthrax, Group A Strep. infections, Neurosyphilis, Fusobacterium infections, Diphtheria, Erysipeloid, Uncomplicated pneumococcal pneumonia, Rat bite fev... View More

Adult Dose

Adult: IM: 0.3 to 1.2 million units up to 2.4 million units as a single dose repeated every five to seven days. Specific dosage schedule: Treatment ... View More

Child Dose

Child: IM 50,000 U/kg for newborns and infants, Child: IM 50,000 U/kg for newborns and infants, children <60 lb: 300,000–600,000 U, children >60 l... View More


Hypersensitivity to penicillins or cephalosporins. IM inj (ischaemic reactions may occur).

Mode of Action

Benzathine benzylpenicillin has the same antimicrobial action as benzylpenicillin which exerts its bactericidal action on growing and dividing bacteria ... View More


Very high doses in poor renal function (risk of neurotoxicity) or heart failure. Avoid contact, skin sensitization may occur. Monitor serum potassium co... View More

Side Effect

Hypersensitivity reactions including uticaria; fever; joint pains; rashes; angioedema; serum sickness-like reactions; haemolytic anaemia; interstitial n... View More

Pregnancy Category Note

Pregnancy Category: B Lactation: Excreted into breast milk, caution advised


Probenecid prolongs T1/2 of benzathine benzylpenicillin. Bacteriostatic drugs e.g. chloramphenicol, tetracyclines; other antibacterials; anticoagulants.... View More

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The information provided herein is accurate, updated and complete as per the best practices of the Company. Please note that this information should not... View More

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