ATC JAntiinfectives for systemic useWHO

Antibiotics, antiviralsand antifungals taken into the body

5 184 medicines · 664 active substances · from the FDA National Drug Code Directory

Counted from the register

The group in figures

  • 5 184products listed in the register
  • 17%without prescription (862)
  • 987combination products — more than one substance

What the group contains

Anatomical main group J of the WHO ATC classification: “Antiinfectives for systemic use”. US records carry no ATC code: a product is here because the FDA pharmacologic class on its record maps to this group — not because of any judgement about who it is for.

803 marketing authorisation holders

  • Clotrimazole
  • Miconazole Nitrate
  • Amoxicillin
  • Doxycycline Hyclate
  • Metronidazole

Source: FDA National Drug Code Directory, 2026-09-13. Counts computed by Mediclarum from that file.

The most common
substances

AMOXICILLIN268 products · 268 alonePOLYMYXIN B SULFATE238 products · 41 aloneNEOMYCIN SULFATE231 products · 34 alone001970

and how often
they are combined

Numbers in the overlaps are products in the register that contain both substances (the centre: all three). Being sold together is not a statement that the substances are interchangeable, or that they should be combined.

Active substances in this group

Commonest first, by number of products in the register. Select one to see every product that contains it.

  1. 01Clotrimazole159 products146 OTC
  2. 02Miconazole Nitrate151 products150 OTC
  3. 03Amoxicillin149 productsprescription only
  4. 04Doxycycline Hyclate142 productsprescription only
  5. 05Metronidazole136 productsprescription only
  6. 06Acyclovir130 productsprescription only
  7. 07Vancomycin Hydrochloride119 productsprescription only
  8. 08Fluconazole117 productsprescription only
  9. 09Amoxicillin and Clavulanate Potassium116 productsprescription only
  10. 10Doxycycline115 productsprescription only
  11. 11Minocycline Hydrochloride98 productsprescription only
  12. 12Cephalexin89 productsprescription only
  13. 13Azithromycin87 productsprescription only
  14. 14Bacitracin Zinc, Neomycin Sulfate, Polymyxin B Sulfate87 products87 OTC
  15. 15Ciprofloxacin72 productsprescription only
  16. 16Erythromycin68 productsprescription only
  17. 17Sulfamethoxazole and Trimethoprim66 productsprescription only
  18. 18Nystatin62 productsprescription only
  19. 19Clindamycin Hydrochloride61 productsprescription only
  20. 20Clindamycin Phosphate60 productsprescription only
  21. 21Ciprofloxacin Hydrochloride52 productsprescription only
  22. 22Tobramycin52 productsprescription only
  23. 23Valacyclovir52 productsprescription only
  24. 24Voriconazole52 productsprescription only
  25. 25Clarithromycin48 productsprescription only
  26. 26Sulfacetamide Sodium, Sulfur48 productsprescription only
  27. 27Terbinafine Hydrochloride48 products27 OTC
  28. 28Ketoconazole47 products10 OTC
  29. 29Azithromycin Dihydrate45 productsprescription only
  30. 30Cefdinir44 productsprescription only
  31. 31Valacyclovir Hydrochloride42 productsprescription only
  32. 32Emtricitabine and Tenofovir Disoproxil Fumarate41 productsprescription only
  33. 33Penicillin V Potassium40 productsprescription only
  34. 34Meropenem39 productsprescription only
  35. 35Ofloxacin39 productsprescription only
  36. 36Linezolid38 productsprescription only
  37. 37Daptomycin36 productsprescription only
  38. 38Piperacillin and Tazobactam35 productsprescription only
  39. 39Nitrofurantoin Macrocrystals33 productsprescription only
  40. 40Posaconazole33 productsprescription only
  41. 41Ceftriaxone Sodium32 productsprescription only
  42. 42Cefuroxime Axetil32 productsprescription only
  43. 43Cefazolin31 productsprescription only
  44. 44Gentamicin Sulfate31 productsprescription only
  45. 45Nitrofurantoin31 productsprescription only
  46. 46Ampicillin Sodium30 productsprescription only
  47. 47Entecavir29 productsprescription only
  48. 48Mupirocin29 productsprescription only

Showing 48 of 556. Browse every substance A–Z

How this group is made

Each product is placed by the ATC code in its national register record (Bulgaria) or by the pharmacologic class the FDA assigned it (United States). Products without either are in no group rather than in a plausible one.

A group is not a diagnosis. Medicines are grouped by the class the regulator gave them. Which one suits you depends on things this page cannot know — ask a pharmacist or doctor.