Evidence supporting the use of: Alginic acid
For the health condition: Overacidity
Synopsis
Source of validity: Scientific
Rating (out of 5): 4
Alginic acid is primarily used in the symptomatic management of gastroesophageal reflux disease (GERD) and overacidity. Its use is scientifically validated, particularly in the formulation of so-called "raft-forming" antacids, such as Gaviscon. Alginic acid is a natural polysaccharide derived from brown seaweed. When ingested with antacids, it reacts with gastric acid to form a viscous gel or "raft" that floats on top of the stomach contents. This physical barrier helps prevent acid reflux into the esophagus, thereby reducing symptoms of heartburn and overacidity.
Multiple clinical studies and systematic reviews support the efficacy of alginic acid-antacid combinations in reducing reflux symptoms. For example, a 2017 review published in Alimentary Pharmacology & Therapeutics concluded that alginate-based formulations are effective in relieving symptoms of GERD and are generally well-tolerated. The mechanism is physical rather than chemical neutralization of acid, distinguishing alginates from traditional antacids. Regulatory agencies such as the UK’s National Institute for Health and Care Excellence (NICE) recommend alginate-containing products as first-line therapy for mild-to-moderate reflux symptoms.
In summary, the use of alginic acid for overacidity is scientifically validated, with robust evidence for its efficacy in managing symptoms related to acid reflux and overacidity, particularly as part of combination products.
Other health conditions supported by alginic acid
Acid IndigestionDigestion (poor)
Gas and Bloating
Gastritis
Hiatal Hernia
Indigestion
Overacidity
Ulcers
