Does Malic Acid Help With Topical 1% malic acid spray significantly increased unsti...?

Evidence Summary

Topical 1% malic acid spray significantly increased unstimulated salivary flow rate and reduced dry mouth symptoms in type 2 diabetes patients with xerostomia compared to placebo (PMID: 35913424). When co-ingested with GABA (400 mg each) before meals, malic acid enhanced postprandial GLP-1 secretion by 1.2–1.6 fold in healthy adults, though no significant effects on blood glucose or insulin were observed (PMID: 38487986). Malic acid also appears as a naturally occurring metabolite in foods like spinach and mushrooms, and plays a role in TCA cycle metabolism (PMID: 35072987, PMID: 41806891).

Source: auto-research

Effective Dose

No established dose from provided studies for general supplementation; 1% topical spray used for xerostomia (PMID: 35913424); 400 mg oral used in combination with GABA (PMID: 38487986)