bladder infection
"If I could rate this drug lower then 1 I would. Last year my mother went to a local hospital to be treated for a routine bladder infection. 

A clearly untrained nurse gave my mother this drug, and she took 1 pill that afternoon. Within 45 minutes she had collapsed and had gone in to anaphylactic shock. 

The drug caused a chain reaction in her blood and she suffered total kidney failure.

She spent 3 weeks in an intensive care unit, on the brink of death.

Her whole body swelled with edema from around 76kgs to over 120kgs in the time she was in hospital, she couldn't move and had to be fed intravenously.

Luckily she recovered and left hospital 4 weeks later."