| Diphenhydramine | 🇨🇦Canada | 25 MG | Tablet | Cancelled | Ranbaxy Pharmaceuticals Canada INC. |
| Diphenhydramine Hydrochloride | 🇺🇸United States | 12.5MG/5ML | elixir | Marketed | Lannett |
| Diphenhydramine Hydrochloride | 🇺🇸United States | 10MG/ML, 50MG/ML | injectable | Marketed | Avet Lifesciences |
| Diphenhydramine Hydrochloride Preservative Free | 🇺🇸United States | 50MG/ML | injectable | Marketed | Fresenius Kabi USA |
| Diphenhydramine Hydrochloride | 🇺🇸United States | 12.5MG/5ML | syrup | Not marketed | Sciegen Pharms |
| Diphenhydramine Hydrochloride | 🇺🇸United States | 25MG, 50MG | capsule | Not marketed | Valeant Pharm Intl |
| Diphenhydramine Hydrochloride Elixir USP | 🇨🇦Canada | 12.5 MG / 5 ML | Elixir | Marketed | Jamp Pharma Corporation |
| Diphenhydramine Hydrochloride 50MG USP | 🇨🇦Canada | 50 MG | Capsule | Authorised | Strides Pharma Canada INC |
| Diphenhydramine Hydrochloride Injection USP | 🇨🇦Canada | 50 MG / ML | Liquid | Marketed | Sandoz Canada Incorporated |
| Diphenhydramine Hydrochloride Injection, USP | 🇨🇦Canada | 50 MG / ML | Solution | Marketed | Fresenius Kabi Canada LTD |
| Diphenhydramine Hydrochloride Tablets, 25MG | 🇨🇦Canada | 25 MG | Tablet | Authorised | Time-Cap Laboratories, INC |
| Diphenhydramine HCL Injection, USP | 🇨🇦Canada | 50 MG / ML | Solution | Not marketed | Sterimax INC |
| PDP-Diphenhydramine | 🇨🇦Canada | 25 MG | Capsule | Marketed | Pendopharm Division of Pharmascience INC |
| Jamp Diphenhydramine 25 MG | 🇨🇦Canada | 25 MG | Tablet | Marketed | Jamp Pharma Corporation |
| Jamp Diphenhydramine 50 MG | 🇨🇦Canada | 50 MG | Tablet | Marketed | Jamp Pharma Corporation |
| AG-Diphenhydramine 25 MG | 🇨🇦Canada | 25 MG | Tablet | Authorised | Angita Pharma INC. |
| AG-Diphenhydramine 50 MG | 🇨🇦Canada | 50 MG | Tablet | Authorised | Angita Pharma INC. |
| Ibuprofen and Diphenhydramine CitrateCombination | 🇺🇸United States | 38MG; 200MG | tablet | Marketed | PLD Acquisitions LLC |
| Ibuprofen and Diphenhydramine HydrochlorideCombination | 🇺🇸United States | 25MG; 200MG FREE ACID AND POTASSIUM SALT | capsule | Marketed | Onesource Specialty |
| Naproxen Sodium and Diphenhydramine HydrochlorideCombination | 🇺🇸United States | 25MG; 220MG | tablet | Marketed | P and L |
| Diphenhydramine Hydrochloride 25MG | 🇨🇦Canada | 25 MG | Capsule | Cancelled | Pharma Strides Canada Corporation |
| PDP-Diphenhydramine Extra Strength/ Extra Fort | 🇨🇦Canada | 50 MG | Capsule | Marketed | Pendopharm Division of Pharmascience INC |
| Jamp Diphenhydramine Children'S Syrup | 🇨🇦Canada | 6.25 MG / 5 ML | Syrup | Authorised | Jamp Pharma Corporation |
| Diphenhydramine HCL Inj USP 50MG/ML | 🇨🇦Canada | 50 MG / ML | Liquid | Cancelled | International Medication Systems LTD. |
| Diphenhydramine HCL Children'S Liquid | 🇨🇦Canada | 6.25 MG / 5 ML | Syrup | Cancelled | Laboratoires Confab INC |
