Dose of benzanthine penicillin in early syphilis is _________

2.4 million units intramuscularly as a single injection is the dose of benzanthine penicillin early syphilis. Early syphilis: Benzanthine penicillin G, 2.4 million units intramuscularly weekly for three doses. More than 1-year duration: Benzanthine penicillin G, 2.4 million units intramuscularly weekly for three doses. Neurosyphilis: Aqueous crystalline penicillin G, 3-4 million units intravenously every 4 hours for 10-14 days or Aqueous procaine penicillin, 2.4 million units intramuscularly daily, plus probenecid 500 mg orally four times daily, both for 10-14 days. Ref: Willams Obstetrics 25th edition Pgno: 1238