Giardiasis
"I took Flagyl and Cipro for giardia and salmonella diagnosis. Both taken for one week.  The Flagyl has a terrible taste and you have to drink something besides water while you are taking it because everything tastes metallic.  It works to eradicate the infection but I was very happy when the seven days of treatment was over.  I also experienced lack of appetite however you must eat something when you take Flagyl or it will upset your stomach. Other side effects experienced: bloating, burping, hiccups, terrible taste in my mouth all the time, lack of energy. But the need for the medication outweighs the side effects and it took care of the infection."