likely to cause massive cardiac arrest if taken in large doses 
(ROOT (ADJP (JJ likely) (S (VP (TO to) (VP (VB cause) (NP (JJ massive) (JJ cardiac) (NN arrest)) (SBAR (IN if) (S (VP (VBN taken) (PP (IN in) (NP (JJ large) (NNS doses)))))))))))
(ROOT (ADJP (JJ ) (S (VP (TO ) (VP (VB ) (NP (JJ ) (JJ ) (NN )) (SBAR (IN ) (S (VP (VBN ) (PP (IN ) (NP (JJ ) (NNS )))))))))))