Other additions to his medications included Keppra and metoprolol.
 The patient is on an anti epileptic. 
(ROOT (S (NP (NP (JJ Other) (NNS additions)) (PP (TO to) (NP (PRP$ his) (NNS medications)))) (VP (VBD included) (NP (NNP Keppra) (CC and) (NN metoprolol))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ is) (PP (IN on) (NP (DT an) (JJ anti) (JJ epileptic)))) (. .)))
( ( ( Other additions ) ( to ( his medications ) ) ) ( ( included ( ( Keppra and ) metoprolol ) ) . ) )
( ( The patient ) ( ( is ( on ( an ( anti epileptic ) ) ) ) . ) )