Giardiasis
"On day 7 of 10 of taking Metronidazole and i still feel like shit! Being treated for a parasite that was making me feel awful but not this awful! I know in the long run this will be beneficial as the parasite will be gone however, taking for ten days is exhausting. I have had to take the entire week off work. Side effects include stomach pain, nausea upon movement, brown urine, back pain, fatigue. And the foul taste!!!! People really haven&#039;t exaggerated the taste - it is vile and constant! Can&#039;t wait to be done!"