9cf63ef4_s__onions__etc____PragmaticMom__Reasons_to_avoid
[Items to avoid] Human vitamin supplements containing iron [Reasons to avoid] 
Can damage the lining of the digestive system and be toxic to the other organs including the liver and kidneys.
Things Dogs Eat That Will Kill Them: Raisins, onions, etc. : PragmaticMom
Reasons to avoid