- Lacosamide
- Lamivudine
- Lamotrigine
- Lansoprazole
- Latanoprost
- Levalbuterol
- Lenalidomide
- Lercanidipine
- Letrozole
- Levetiracetam
- Levodopa
- Levodropropizine
- Levofloxacin
- Levosulpiride
- Levothyroxine
- Lidocaine
- Linagliptin
- Linezolid
- Liothyronine
- Lisinopril
- Loperamide
- Loratadine
- Lornoxicam
- Losartan
- Loteprednol
- Lovastatin
- Luliconazole
- Lumefantrine
- Lurasidone
- Lutidine
- Lymecycline
- Lysine