| Maalox Plus 200mg/175mg/25mg Oral Suspension | - |  29/10/19 |  30/10/19 | Aluminium Hydroxide, Magnesium Hydroxide, Simethicone | SANOFI |
| Maalox Plus Chewable Tablets 200mg/200mg/25mg | - | 29/10/19 | 30/10/19 | Aluminium oxide, hydrated, Magnesium Hydroxide, Simethicone | SANOFI |
| MabThera 100 mg and 500 mg concentrate for solution for infusion | - | 08/08/19 | 07/08/19 | Rituximab | Roche Registration GmbH |
| MabThera 1400 mg Solution for Subcutaneous Injection | - | 16/08/18 | 27/02/19 | Rituximab | Roche Registration GmbH |
| Macrodantin 100mg Capsules, hard | - | - | 24/05/19 | | ADVANZ Pharma |
| Macrodantin 50mg, Capsules, hard | - | - | 24/05/19 | | ADVANZ Pharma |
| Madopar 200mg/50mg Hard Capsules | - | 28/08/18 | 28/08/18 | Benserazide Hydrochloride, Levodopa | Roche Products (Ireland) Ltd |
| Madopar 50mg/12.5mg, 100mg/25mg Dispersible Tablets | - | 28/08/18 | 28/08/18 | Benserazide Hydrochloride, Levodopa | Roche Products (Ireland) Ltd |
| Magnaspartate 243 mg powder for oral solution | - | 29/04/19 | 29/04/19 | Magnesium aspartate dihydrate | Kora Healthcare |
| Maintelyte solution for infusion | - | - | 05/11/19 | Glucose anhydrous, Magnesium chloride, hexahydrate, Potassium Chloride, Sodium acetate, trihydrate, Sodium Chloride | Baxter Holding B.V. |
| Malarone Film Coated Tablets | - | 27/07/17 | 15/05/17 | Atovaquone, Proguanil Hydrochloride | GlaxoSmithKline (Ireland) Ltd |
| Manerix 150 mg Film-coated Tablets | - | 29/06/18 | 14/06/19 | Moclobemide | Mylan IRE Healthcare Limited |
| Mannitol 10% Solution for Infusion BP | - | - | 04/04/19 | Mannitol | Baxter Holding B.V. |
| Mannitol 15% w/v Solution for infusion | - | - | 27/02/20 | Mannitol | Baxter Holding B.V. |
| Marcain 0.25% with Adrenaline (5 micrograms per ml) 1:200,000 | - | 08/04/19 | 21/09/17 | Adrenaline tartrate, Bupivacaine Hydrochloride | Aspen |
| Marcain 0.5% with Adrenaline (5 micrograms per ml) 1:200,000 | - | 08/04/19 | 21/09/17 | Adrenaline tartrate, Bupivacaine Hydrochloride | Aspen |
| Marcain Heavy Steripack | - | 11/05/17 | 12/07/17 | Bupivacaine Hydrochloride | Aspen |
| Marcain Polyamp Steripack 0.25% | - | 20/09/17 | 21/09/17 | Bupivacaine hydrochloride anhydrous | Aspen |
| Marcain Polyamp Steripack 0.5% | - | 20/09/17 | 21/09/17 | Bupivacaine hydrochloride anhydrous | Aspen |
| Marviol | - | 23/04/19 | 23/04/19 | Desogestrel, Ethinylestradiol | MSD Ireland (Human Health) Limited |
| Matrifen Transdermal patch | - | 24/10/19 | 07/11/19 | Fentanyl | Takeda Products Ireland Ltd |
| MAVENCLAD 10 mg Tablets | - | 17/01/20 | 17/01/20 | Cladribine | Merck |
| Maviret 100 mg-40 mg film-coated tablets | | 29/04/19 | 03/02/20 | Glecaprevir, Pibrentasvir | AbbVie Limited |
| Maxidex Eye Drops | - | 17/01/20 | 01/08/18 | Dexamethasone | Novartis Ireland Limited |
| Maxitrol Eye Drops | - | 10/12/19 | 02/08/18 | Dexamethasone, Neomycin sulfate, Polymyxin B sulfate | Novartis Ireland Limited |
