AstraGin®

## What It Is AstraGin® is a highly specialized, proprietary nutraceutical ingredient developed by NuLiv Science. It is a plant-derived compound complex extracted from highly fractionated *Panax notoginseng* and *Astragalus membranaceus* using pharmaceutical-grade extraction and processing technology. Unlike standard herbal powders that are taken for their direct physiological effects, AstraGin® is primarily utilized as an "absorption enhancer." It is designed to be stacked with other nutrients—such as amino acids, vitamins, and botanical extracts—to ensure that your body actually absorbs and utilizes the supplements you consume.

Since its introduction to human use in late 2010, AstraGin® has become a staple in the sports nutrition and functional food industries. It is currently featured in hundreds of dietary supplements worldwide, ranging from pre-workouts and protein powders to medical foods and functional beverages. It holds self-affirmed GRAS (Generally Recognized as Safe) and NDI (New Dietary Ingredient) status.

## The Science: How AstraGin® Works The human digestive system is a complex barrier. Most nutrients do not simply diffuse into the bloodstream; they require active transport mechanisms to cross the intestinal wall. AstraGin® works by upregulating the mRNA and protein expression levels of specific nutrient transporters in the gut.

When you consume a nutrient, it must be actively absorbed by these transporters, moved into the portal vein, transported to the liver, and finally circulated to the rest of the body. Nutrients that fail to bind to a transporter are simply excreted as waste. By increasing the number and activity of these transporters, AstraGin® widens the "bottleneck" of digestion, allowing a significantly higher volume of nutrients to enter the bloodstream.

### Validated by the Gold Standard: Caco-2 Cell Assays The efficacy of AstraGin® has been rigorously tested using Caco-2 intestinal cell monolayers. In the pharmaceutical industry, Caco-2 cells are the gold standard for predicting in-vivo human intestinal absorption of drugs and nutrients.

During these assays, the Caco-2 cells are equilibrated in Hank’s balanced salt solution (HBSS) at 37°C. To ensure the results are accurate and that nutrients aren't just leaking through damaged cells, researchers measure the Transepithelial Electrical Resistance (TEER). Data is only recorded when the TEER is higher than 250 Ω‧cm2, proving the cellular barrier is intact and that absorption is happening via active transport. Under these strict conditions, AstraGin® has been proven to drastically increase the steady-state absorption rate of numerous critical nutrients.

## What The Research Says: Key Absorption Benefits The data behind AstraGin® is extensive, particularly regarding its ability to amplify the uptake of sports nutrition staples and poorly absorbed botanicals.

**Amino Acids and Performance Ingredients:** In-vitro studies show that AstraGin® increases the steady-state absorption rate of: * **Arginine:** 67% * **Leucine:** 58% * **Tryptophan:** 53% * **Citrulline:** 45% * **Peptides:** 41% * **Agmatine:** 36% * **Creatine:** 33% * **Beta-alanine:** 25%

**The Curcumin Problem Solved:** Curcumin, the active polyphenol in turmeric, is famous for its anti-inflammatory properties but infamous for its terrible bioavailability. It is highly hydrophobic, meaning it repels water and struggles to cross the intestinal barrier.

In Caco-2 uptake assays analyzed via fluorescence, AstraGin® alone increased the total quantity of curcumin absorbed by 18% over 2 hours. However, when combined with other absorption aids, the results were exponential. When curcumin was paired with piperine (a black pepper extract) in a 1:2 ratio, adding AstraGin® increased the transport rate by 121% and total absorption by 190%. When curcumin was paired with lecithin, AstraGin® increased the transport rate by 105% and total absorption by 92%.

**Vitamins and Fatty Acids:** AstraGin® also improves the uptake of essential daily nutrients. It has been shown to increase the absorption of folate by 50%, glucosamine by 23%, omega-7 fatty acids (palmitoleic acid) by 39%, and polyunsaturated fatty acids (from flax and fish oil) by 58% to 100%.

## Gut Health and Inflammation Reduction Beyond just absorbing nutrients, AstraGin® actively protects the gut environment. In-vivo histological assays using a TNBS-induced colitis rat model (a standard method for studying Inflammatory Bowel Disease) revealed profound protective effects.

When colons are exposed to TNBS, they suffer severe macroscopic inflammation. This is measured by Myeloperoxidase (MPO) activity—an enzyme found in white blood cells that spikes during mucosal inflammation. In the study, TNBS caused MPO activity to skyrocket to 592.2% compared to normal cells. However, when the subjects were supplemented with AstraGin®, MPO activity was suppressed down to 158.7%. Hematoxylin-eosin (H&E) staining of the colon cells visually confirmed that AstraGin® helped maintain normal cellular architecture despite the inflammatory trigger.

Additionally, in HepG2 liver cells, AstraGin® was shown to increase ATP (cellular energy) production by 18%, suggesting it supports the liver's metabolic workload as it processes the increased influx of nutrients.

## Dosing Guide Based on a survey of 209 products in the dietary supplement catalog, AstraGin® is highly standardized in its dosing. * **Minimum Effective Dose:** 5mg * **Clinical Standard:** 25mg - 50mg (The industry median is 25mg, and the mean is 32.5mg). * **Upper Range:** 100mg

When looking at a supplement facts panel, a dose of 25mg to 50mg of AstraGin® is the sweet spot. If a product contains less than 25mg, it may be underdosed and might not provide the full transporter-upregulating benefits seen in the clinical assays.

## Forms Compared: AstraGin® vs. Generic Astragalus It is important to distinguish AstraGin® from generic *Astragalus membranaceus* root powder.

**Generic Astragalus:** Traditional Chinese Medicine preparations (like *Dang-gui buxue tang*) often call for up to 30 grams of raw Astragalus root. While human trials on generic Astragalus show Grade C evidence for improving seasonal allergic rhinitis (nasal congestion) and emerging evidence for lengthening telomeres and preserving kidney function, these generic powders are not standardized for nutrient absorption.

**AstraGin®:** This is a highly fractionated, pharmaceutical-grade extraction of both Astragalus and Panax notoginseng. It isolates the specific bioactive compounds (like Astragaloside IV, which is active at just 5-10mg) responsible for upregulating gut transporters. You take AstraGin® specifically to make your other supplements work better.

## When & How To Take It Because AstraGin® is an absorption enhancer, timing is entirely dependent on the supplement you are stacking it with. * **With Pre-Workouts:** Take 15-30 minutes before training to enhance the uptake of citrulline, beta-alanine, and arginine. * **With Protein/Aminos:** Take post-workout to maximize the absorption of leucine and peptides. * **With Health Supplements:** Take alongside your daily curcumin, vitamins, or fish oil to ensure maximum bioavailability.

## Stacking AstraGin® is the ultimate stacking ingredient. It is explicitly designed to be combined with other compounds. * **For Muscle Building:** Stack with Creatine, Leucine, and EAAs. Brands like Lemme use AstraGin® in their creatine gummies, and NutraBio uses it in their Creatine HMB formulas. * **For Pumps:** Stack with L-Citrulline and Agmatine. Pre-workouts like Live Evolved's Vessel utilize AstraGin® to maximize nitric oxide precursors. * **For Joint Health/Inflammation:** Stack with Curcumin, Piperine, and Lecithin for unparalleled polyphenol absorption.

## Who Should Take It * Athletes and bodybuilders who consume large amounts of amino acids, creatine, and pre-workout ingredients and want to ensure they aren't wasting their money through poor digestion. * Individuals taking poorly absorbed health supplements like curcumin or glucosamine. * People who experience mild gastrointestinal distress from heavy supplement powders, as AstraGin®'s ability to reduce MPO activity may soothe the gut.

## Who Should NOT Take It * **Individuals on Prescription Medications:** Because AstraGin® upregulates intestinal transporters, it can increase the absorption of pharmaceutical drugs, potentially altering their pharmacokinetics and blood concentrations. Always consult a physician or pharmacist before combining AstraGin® with prescription medications. * **Those seeking a cure for Cancer-Related Fatigue:** Examine.com notes Grade D evidence (no effect) for Astragalus in treating condition-related fatigue in cancer patients.

## The Bottom Line AstraGin® is a premier, evidence-backed absorption enhancer. By physically upregulating the transporters in your intestinal wall, it ensures that the amino acids, vitamins, and botanical extracts you consume actually make it into your bloodstream. Backed by rigorous Caco-2 cell assays and in-vivo inflammation models, a clinical dose of 25-50mg is a valuable addition to almost any sports nutrition or wellness stack.