Members of the paraben family are found in fruit and vegetable products, such as barley, flax seed, and grapes.[3] Butylparaben can also be found in low concentrations in liquid and solid medication suspensions, such as tylenol (acetaminophen) and ibuprofen.[4] Butylparaben can also be found in the sewage. A 2001 study found that concentrations of parabens in Danish sewage facilities was to 100 to 1000 times below the acute or chronic effect concentrations.[5]