| Penicillin | 🇺🇸United States | 200,000 UNITS/5ML, 400,000 UNITS/5ML | for solution | Not marketed | Teva |
| Penicillin-2 | 🇺🇸United States | 250,000 UNITS/5ML | for solution | Not marketed | Teva |
| Penicillin G Sodium | 🇺🇸United States | 5,000,000 UNITS/VIAL | injectable | Marketed | Watson Labs INC |
| Penicillin G Potassium | 🇺🇸United States | 1,000,000 UNITS/VIAL, 1,000,000 UNITS/VIAL **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**, 10,000,000 UNITS/VIAL … | injectable | Marketed | Lilly |
| Penicillin G Sodium | 🇺🇸United States | 1,000,000 UNITS/VIAL, 5,000,000 UNITS/VIAL | injectable | Not marketed | Pharmacia and Upjohn |
| Penicillin G Potassium in Plastic Container | 🇺🇸United States | 20,000 UNITS/ML, 40,000 UNITS/ML, 60,000 UNITS/ML | injectable | Marketed | Baxter Hlthcare |
| Penicillin G Potassium | 🇺🇸United States | 200,000 UNITS/5ML, 250,000 UNITS/5ML, 400,000 UNITS/5ML | for solution | Not marketed | Mylan |
| Penicillin G Potassium | 🇺🇸United States | 200,000 UNITS, 250,000 UNITS, 400,000 UNITS … | tablet | Not marketed | Mylan |
| Penicillin-VK | 🇺🇸United States | 125MG BASE/5ML, 250MG BASE/5ML | for solution | Marketed | Teva |
| Penicillin-VK | 🇺🇸United States | 250MG BASE, 500MG BASE | tablet | Marketed | Teva |
| Penicillin V Potassium | 🇺🇸United States | 125MG BASE, 250MG BASE, 500MG BASE | tablet | Marketed | Mylan |
| Penicillin G Procaine | 🇺🇸United States | 1,500,000 UNITS/VIAL, 300,000 UNITS/ML, 300,000 UNITS/VIAL … | injectable | Marketed | Parke Davis |
| Pfizerpen | 🇺🇸United States | 1,000,000 UNITS/VIAL **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**, 20,000,000 UNITS/VIAL, 5,000,000 UNITS/VIAL | injectable | Marketed | Pfizer |
| Penicillin V Potassium | 🇺🇸United States | 125MG BASE/5ML, 250MG BASE/5ML | for solution | Not marketed | Mylan |
| Pentids '200' | 🇺🇸United States | 200,000 UNITS | tablet | Not marketed | Apothecon |
| Pentids '200' | 🇺🇸United States | 200,000 UNITS/5ML | for solution | Not marketed | Apothecon |
| Pentids '250' | 🇺🇸United States | 250,000 UNITS | tablet | Not marketed | Apothecon |
| Pentids '400' | 🇺🇸United States | 400,000 UNITS/5ML | for solution | Not marketed | Apothecon |
| Pentids '400' | 🇺🇸United States | 400,000 UNITS | tablet | Not marketed | Apothecon |
| Pentids '800' | 🇺🇸United States | 800,000 UNITS | tablet | Not marketed | Apothecon |
| Pfizerpen G | 🇺🇸United States | 400,000 UNITS/5ML | for solution | Not marketed | Pfizer |
| Pfizerpen G | 🇺🇸United States | 100,000 UNITS, 200,000 UNITS, 250,000 UNITS … | tablet | Not marketed | Pfizer |
| Bicillin L-A | 🇺🇸United States | 300,000 UNITS/ML, 600,000 UNITS/ML | injectable | Marketed | King Pharms LLC |
| Bicillin C-RCombination | 🇺🇸United States | 150,000 UNITS/ML; 150,000 UNITS/ML, 300,000 UNITS/ML; 300,000 UNITS/ML | injectable | Marketed | King Pharms LLC |
| Bicillin | 🇺🇸United States | 200,000 UNITS | tablet | Not marketed | Wyeth Ayerst |
