( ( The effect ) ( ( is ( ( inhibition ( of ( gastric secretion ) ) ) ( to ( ( ( help ( slow ( stomach emptying ) ) ) and ) ( prevent ( overload ( of ( ( the duodenum ) ( -LRB- ( ( which ( must ( deal ( with ( that ( incoming ( acidic chyme ) ) ) ) ) ) ) -RRB- ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN effect)) (VP (VBZ is) (NP (NP (NN inhibition)) (PP (IN of) (NP (JJ gastric) (NN secretion))) (S (VP (TO to) (VP (VP (VB help) (NP (JJ slow) (NN stomach) (NN emptying))) (CC and) (VP (VB prevent) (NP (NP (NN overload)) (PP (IN of) (NP (NP (DT the) (NN duodenum)) (PRN (-LRB- -LRB-) (SBAR (WHNP (WDT which)) (S (VP (MD must) (VP (VB deal) (PP (IN with) (NP (DT that) (JJ incoming) (JJ acidic) (NN chyme))))))) (-RRB- -RRB-))))))))))) (. .)))
The effect is inhibition of gastric secretion to help slow stomach emptying and prevent overload of the duodenum (which must deal with that incoming acidic chyme).
(ROOT (S (NP (JJ Gastric) (NN emptying)) (VP (VBZ is) (VP (VBN regulated) (PP (IN by) (NP (NP (PDT both) (DT the) (NN stomach)) (CC and) (NP (DT the) (NN duodenum)))))) (. .)))