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2014 ; 40
(5
): 531-7
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Gaviscon Double Action Liquid (antacid & alginate) is more effective than antacid
in controlling post-prandial oesophageal acid exposure in GERD patients: a
double-blind crossover study
#MMPMID25041141
De Ruigh A
; Roman S
; Chen J
; Pandolfino JE
; Kahrilas PJ
Aliment Pharmacol Ther
2014[Sep]; 40
(5
): 531-7
PMID25041141
show ga
BACKGROUND: Recent studies have shown that Gaviscon Double Action Liquid (a
combination alginate-antacid) administered post-prandially co-localises with the
acid pocket, the 'reservoir' for post-prandial acid reflux. AIM: To compare the
effectiveness of Gaviscon Double Action Liquid to an equivalent strength antacid
without alginate in controlling post-prandial acid reflux in GERD patients.
METHODS: Fourteen GERD patients undertook two 3.5-h high-resolution
manometry/pH-impedance studies during which they ate a standardised meal. In a
double-blinded randomised crossover design they then took Gaviscon or CVS brand
antacid, each with ~18 mmol/L acid neutralising capacity. The primary outcome was
distal oesophageal acid exposure; secondary outcomes were number of reflux
events, proximal extent of reflux, nadir pH of the refluxate, mechanism of reflux
and reflux symptoms scored with a validated instrument. RESULTS: Ten patients
completed the study. Gaviscon studies had significantly less distal oesophageal
acid exposure and greater nadir refluxate pH in the 30-150 min post-prandial
period than antacid studies. There were no differences in the number of reflux
events (acid or weakly acidic) or the number of proximal reflux events (15-17 cm
above the LES) with either study medication. CONCLUSIONS: Gaviscon Double Action
Liquid is more effective than an antacid without alginate in controlling
post-prandial oesophageal acid exposure. However, the number and spatial
distribution of reflux events within the oesophagus are similar. This suggests
that Gaviscon main effectiveness relates to its co-localisation with and
displacement/neutralisation of the post-prandial acid pocket, rather than
preventing reflux.