| Nazwa handlowa | Nazwa międzynarodowa |
| Lacidofil | LACTOBACILLUS |
| Lacrimal | ALCOHOL POLYVINYLICU |
| Lactolosum | LACTULOSUM |
| Lactovaginal | LACTOBACILLUS |
| Lactulosum | LACTULOSUM |
| Lakcid | LACTOBACILLUS |
| Lakcid forte | LACTOBACILLUS |
| Lakcid forte 20 | LACTOBACILLUS |
| Landicor | METILDIGOXINUM |
| Lanzul | LANSOPRASOLUM |
| Lanzul S | LANSOPRASOLUM |
| Laticort 0,1% | HYDROCORTISONUM |
| Laxol | DOCUSATUM NATRICUM |
| Laxopol | DOCUSATUM NATRICUM |
| Lecrolyn 2% | NATRII CROMOGLICAS |
| Lekadol | PARACETAMOLUM |
| Lekoptin | VERAPAMILI HYDROCHLO |
| Lekoptin Retard | VERAPAMILI HYDROCHLO |
| Leponex | CLOZAPINUM |
| Linamon | ACIDUM ASCORBICUM |
| Lincocin | LINCOMYCINUM |
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