Amino acid and protein absorption enhancement
A 2026 double-blind RCT in 30 healthy adults published in Nutrients confirmed AstraGin® significantly improved the absorption of key amino acids from whey protein — with improved muscle strength and mass after 4 weeks of resistance training. AstraGin® increases the expression of PEPT1 (peptide transporter) and amino acid transporter proteins in intestinal epithelium, enabling greater amino acid uptake per gram of dietary protein consumed.
Multi-nutrient bioavailability improvement
Over 20 studies confirm AstraGin® increases the absorption of a broad range of nutrients including L-citrulline, creatine, folate, glucosamine, curcumin, vitamins B1/B9/B12/C/D, and omega-3 fatty acids. This broad-spectrum absorption enhancement makes AstraGin® one of the most versatile co-ingredients in supplement formulation — improving the efficacy of virtually any formula it is included in.
Gut health and microbiome support
A human clinical trial in participants with gut health concerns demonstrated AstraGin® (100 mg/day, 3 months) significantly improved intestinal barrier integrity, increased beneficial bacteria populations (420% increase in Faecalibacterium prausnitzii, 180% increase in Bifidobacterium adolescentis), and reduced harmful bacteria — positioning AstraGin® as both an absorption enhancer and a gut health ingredient.
Intestinal transporter upregulation and tight junction support
AstraGin® astragaloside IV and ginsenoside Rb1 upregulate the expression of intestinal nutrient transporter proteins (SGLT1, PEPT1, CAT1) through NF-κB modulation and mTOR-mediated protein synthesis — increasing the transport capacity of intestinal epithelial cells for amino acids, glucose, and other nutrients. Simultaneously, AstraGin® strengthens tight junction proteins (ZO-1, occludin) reducing intestinal permeability and improving the selective barrier function that underlies both nutrient absorption efficiency and immune defense.
Randomized, double-blind, placebo-controlled crossover trial of AstraGin® effects on amino acid absorption from whey protein and muscle function. Published in Nutrients, 2026.
30 healthy adults across three age groups. Two-phase study: acute absorption + 4-week resistance training.
AstraGin® significantly improved amino acid absorption kinetics from whey protein in the acute phase. After 4 weeks of training, AstraGin® group showed improved muscle strength and mass vs. placebo. Gut permeability biomarkers improved. Supports AstraGin® as absorption enhancer improving protein supplementation efficacy.
Human clinical trial of AstraGin® (100 mg/day) effects on gut health markers, microbiome composition, and intestinal barrier integrity.
Adults with gut health concerns. 3-month supplementation.
AstraGin® produced 420% increase in Faecalibacterium prausnitzii, 180% increase in Bifidobacterium adolescentis, significantly improved intestinal barrier integrity, and reduced pathogenic bacteria populations. Published in Journal of Biochemistry and Biotechnology.