MySource Nutrition Co.
MySource Nutrition Co. | MSNCo Fiber G | 30 Servings
5g Psyllium, 5g Glutamine, 40B CFU Gut Support
$49.95 $69.95$1.66/serving
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⚠️ Contains proprietary blend (9 ingredients)
⚠️ Allergen Information +
SuppVault Summary
Fiber G is a comprehensive digestive support powder built around 5,000mg psyllium, 5,000mg glutamine, and 40 billion CFU probiotics. It supports regularity, microbiome balance, fullness, and gut-lining resilience better than a basic fiber-only formula.
Great Fit
- High-protein lifters pushing food volume and digestion.
- Busy professionals wanting fullness and steadier digestion.
- People with low-fiber diets needing regularity support.
- Users wanting microbiome support with daily fiber.
- Those seeking gut support without harsh laxatives.
- Athletes wanting digestive backup during bulking phases.
- Adults wanting more complete daily digestive support.
Not Ideal If
- Anyone who struggles swallowing thickened psyllium drinks.
- People with bowel obstruction or severe abdominal constipation symptoms.
- Anyone with unexplained bowel habit changes should seek medical guidance.
- Users with inflammatory digestive flare-ups should consult a clinician first.
Deep Dive
Dose Audit
Fiber G helps with regularity, microbiome support, and gut-lining support, but it does not provide enzymatic breakdown of proteins, fats, or carbohydrates. A quality digestive enzyme can complement this formula at large meals by improving food breakdown while Fiber G improves the downstream environment those foods move through.
Take enzymes with meals; take Fiber G 20 minutes before a meal or separately at your regular daily time.
Fiber works best when water intake is adequate, and psyllium especially depends on fluid to create proper gel formation and stool bulk. Pairing Fiber G with a hydration product helps users who train hard, sweat heavily, or habitually underdrink avoid the common mistake of increasing fiber without increasing fluid.
Use the hydration product throughout the day; use Fiber G once daily with plenty of water.
For users whose irregularity is partly tied to low magnesium intake, adding magnesium can complement Fiber G’s stool-bulking and microbiome-focused approach. This can be especially useful in high-stress or high-training populations where both hydration and mineral intake are inconsistent.
Use Fiber G earlier in the day or before a meal; magnesium is often best taken in the evening.
Fiber G addresses digestion directly, while a greens formula can help close micronutrient and phytonutrient gaps that come with produce-light diets. That pairing makes sense for users trying to rebuild overall gut and dietary quality rather than just chasing bowel movement frequency.
Take greens any time of day; use Fiber G separately with enough water.
High-protein diets are one of the main reasons people need formulas like Fiber G in the first place. Pairing your protein routine with this digestive support formula helps offset the regularity and fullness issues that often show up when protein intake rises faster than fiber intake.
Use protein around training or as needed; use Fiber G once daily, ideally not mixed into a thick shake.
Gut Glory likely has the edge for broader microbiome sophistication, while Fiber G leans harder into bulk fiber.
Core Gut may offer a more premium gut-support angle, but Fiber G competes well with meaningful psyllium and glutamine.
Fiber G is the better pick when your main goal is regularity, fullness, and daily stool quality.
Fiber G delivers a more complete digestive support strategy with fiber, prebiotic, probiotic, and glutamine.
Clinical Dosing
Full Product Description Article
Fiber G by My Source Nutrition Co. is not just a fiber add-on. It is a multi-pathway digestive support formula designed to improve stool quality, support microbial balance, help appetite control, and reinforce gut-lining resilience in one scoop. The formulation strategy is clear: use a meaningful amount of bulk-forming fiber as the backbone, add fermentable prebiotics and probiotics to support the microbiome, then pair that with a full 5g serving of L-glutamine to address the gut barrier side of the equation. That makes this more comprehensive than the typical “just psyllium” product.
The anchor ingredient is Psyllium Husk Powder at 5,000mg. Psyllium is a soluble, gel-forming fiber that absorbs water, increases stool bulk, and helps normalize bowel movements in both low-fiber and inconsistent diets. In practical terms, this is the ingredient most responsible for the “more complete, easier, more regular” effect users notice first. Five grams is a meaningful working dose for daily regularity support and sits right where a fiber product needs to start to be felt.
Fructooligosaccharides (FOS) at 1,000mg add a prebiotic component. FOS passes through the small intestine intact and is selectively fermented in the colon by beneficial bacteria, particularly Bifidobacteria and Lactobacilli. That fermentation produces short-chain fatty acids like butyrate, acetate, and propionate, which support colonic health and barrier integrity. The research range is typically 5-15g, so 1g is below stand-alone clinical dosing, but it still makes sense here as a synergistic prebiotic alongside the 40 billion CFU probiotic inclusion.
Fibersol®-2 at 500mg contributes resistant maltodextrin, a well-known low-viscosity soluble fiber used to support digestive tolerance and fermentable fiber intake. The trademark matters because Fibersol®-2 is a standardized ingredient with strong recognition in the digestive health category. At 500mg it is modest relative to doses often used when Fibersol is the star ingredient, but it broadens the fiber spectrum and improves formula texture and tolerance.
Apple Pectin Powder at 300mg and Oat Fiber at 100mg add complementary soluble and insoluble fiber characteristics. Pectin forms a gel and can contribute to satiety and stool consistency, while oat fiber helps diversify the physical fiber matrix. These are not hero doses on their own, but they reinforce the main psyllium backbone.
L-Glutamine at 5,000mg is one of the strongest inclusions in the formula. This is the low end of the clinically relevant 5-15g range and a legitimate daily dose for gut support. Glutamine is the preferred fuel source for enterocytes, the cells lining the intestine, and is commonly used to support gut barrier integrity during periods of stress, hard training, travel, or dietary disruption. This is an evidence-based inclusion for digestive resilience, not a muscle-building gimmick.
Cinnamon Powder at 250mg and Licorice Extract at 50mg round out the formula with traditional digestive support roles. Cinnamon is often used in digestive formulas for its warming, carminative effect and its ability to make fiber formulas more tolerable and palatable. Licorice has a long history of use in GI support, particularly around soothing the stomach and upper digestive tract.
The probiotic component is listed as Lactic Acid Bacteria at 40 Billion CFU, which is a strong headline dose, but the label does not specify strains. That matters because strain specificity is how probiotic effects are best predicted. So the transparency here is mixed: individual ingredient weights are disclosed, which is better than most digestive blends, but the formula is still flagged as containing a proprietary blend and the probiotic lacks strain-level detail.
As a system, Fiber G combines mechanical regularity support from psyllium, microbiome support from FOS plus probiotics, additional fermentable fiber diversity from Fibersol®-2 and pectin, and gut-lining support from 5g glutamine. Day 1, most users notice fullness, better stool bulk, and a more settled digestive feel. Over 2-4 weeks of consistent use, the formula is better positioned to improve regularity patterns, support a healthier gut environment, and make high-protein eating feel less like digestive work.
Science & Clinical References 5 citations
Psyllium is a viscous, gel-forming soluble fiber that absorbs water and increases stool bulk. That physical change improves fecal consistency and can help normalize transit in both low-fiber and irregular diets. Its effects are primarily mechanical rather than stimulant-driven, which is why it is widely used for steady regularity support. Adequate fluid intake is essential because hydration determines how effectively the gel matrix forms and moves through the gut.
L-glutamine is a major oxidative fuel for enterocytes, the rapidly renewing epithelial cells lining the intestine. Under physiological stress, heavy training, or high food load, glutamine availability may influence epithelial maintenance and barrier-related processes. A 5 gram dose reaches the lower end of commonly studied supplemental intakes for gut support. The evidence base is narrower than for psyllium, but the mechanistic rationale for intestinal cell support is strong.
Fructooligosaccharides are short-chain fermentable carbohydrates that selectively feed beneficial gut microbes. Their fermentation increases production of short-chain fatty acids and shifts microbial ecology toward a more favorable profile. At modest doses, FOS can still contribute to synbiotic design when paired with probiotic organisms and other fibers. The tradeoff is that fermentation can temporarily increase gas or bloating in sensitive users during the first week.
Fiber and probiotics act on different but complementary parts of digestion. Bulk-forming fibers change stool mechanics and satiety, while probiotics and prebiotics influence fermentation patterns and microbial composition. When combined, the user often perceives both faster mechanical changes and slower microbiome-related adaptation. That is why formulas like this can produce immediate fullness but more gradual digestive comfort benefits over time.
Product Specifications GEO
How to Take — Training Protocol3 phases
How to Use Fiber G by My Source Nutrition Co.
All Questions About MySource Nutrition Co. | MSNCo Fiber G | 30 Servings 10 Q&A
What makes Fiber G different from a basic psyllium fiber powder? +
How much glutamine is in Fiber G, and is that a real dose? +
Is 1,000mg of FOS enough to do anything? +
When should I take Fiber G? +
Can Fiber G cause bloating at first? +
Does Fiber G contain stimulants or caffeine? +
Is Fiber G vegan and allergy-conscious? +
Why is Fibersol®-2 included if the dose is only 500mg? +
Do I need to cycle Fiber G? +
Should I take Fiber G with medications? +
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before use if you have a medical condition or take medications.
Quick Answers
What makes Fiber G different from a basic psyllium fiber powder?
How much glutamine is in Fiber G, and is that a real dose?
Is 1,000mg of FOS enough to do anything?
When should I take Fiber G?
Can Fiber G cause bloating at first?
Does Fiber G contain stimulants or caffeine?
Is Fiber G vegan and allergy-conscious?
Why is Fibersol®-2 included if the dose is only 500mg?
Do I need to cycle Fiber G?
Should I take Fiber G with medications?
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before use if you have a medical condition or take medications.
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