The treatments for Giardiasis typically involve medications to kill the parasite causing the infection. The most commonly prescribed medications for Giardiasis include: 1. Metronidazole (Flagyl): This is the most commonly used medication for treating Giardiasis. It is usually taken orally for 5-7 days. 2. Tinidazole (Tindamax): This medication is an alternative to metronidazole and is also taken orally for 5-7 days.  Read More