- *MSRP:
$47.99- Our Price:
- $28.80
- Buy: at $28.80
- UPC: 733739000910
- # N0091
Product Overview & Quick Specs
Think of your digestive tract like a busy highway system that runs on special fuel. NOW L-Glutamine 1,000 mg supplies pure crystalline fuel directly to that network. This unbonded amino acid (free-form L-Glutamine) nourishes your digestive tract lining (enterocytes) while protecting your body's active immune defenses [1, 2].
- ✓ Active Form & Potency: 1 g (1,000 mg) of pure, crystalline Free-Form L-Glutamine (C5H10N2O3) per single vegetarian capsule.
- ✓ Primary Target: Intestinal wall cell renewal, systemic nitrogen transport, and active white blood cell defense pathways [1, 2].
- ✓ Supply & Value: 240 full servings per bottle (an economical 4 to 8 month supply) delivering twice the potency of standard 500 mg capsules.
- ✓ Purity & Dietary Status: 100% vegetarian capsule, non-GMO, bottled in 100% PCR recycled resin, and free of gluten, soy, dairy, egg, fish, and nuts.
Buyer's Guide & Form Comparison
Why the Free-Form Capsule Matters
Think of whole dietary protein like an unbroken chain of heavy cargo cars. Your stomach acid and enzymes must break every link before absorption starts. This formula provides free-form amino acids (unbonded L-Glutamine), which act like individual packages ready for direct cellular uptake [1]. Mass-market big box store brands often utilize low-grade amino acids prone to chemical impurities. NOW delivers laboratory-verified, pure crystalline glutamine with twice the strength of common capsules to reduce daily pill fatigue [1, 3].
Is This Formula Right for You?
Best Choice For:
- ✓ Shoppers seeking daily intestinal barrier support in a high-potency capsule without the hassle of mixing powders [2, 3].
- ✓ Active athletes needing efficient nitrogen delivery for muscle tissue maintenance after intense training sessions [1, 5].
- ✓ Individuals wanting clean immune nourishment without synthetic fillers, animal gelatin, or common allergens [1, 4].
Consider Another Option If:
- ✗ You require intensive athletic megadoses (10 to 20 grams daily), where standalone unflavored powder is more practical.
- ✗ You struggle with swallowing larger dietary capsules and prefer liquids.
- ✗ You have severe liver challenges or specific metabolic conditions requiring formal medical supervision.
How It Works in the Body
Think of amino acids as structural bricks for your cellular house. Your body manufactures some L-Glutamine naturally. During physical stress or workout exhaustion, your reserves empty rapidly, making it conditionally essential [1, 5].
1. Locking the Cellular Zipper of the Gut Barrier
Think of your intestinal wall like a protective jacket zipper. The individual teeth represent mucosal lining cells (enterocytes). These intestinal cells consume L-Glutamine as primary cellular fuel [1, 2]. Providing adequate glutamine helps keep specialized protein seals (tight junctions) locked firmly shut. This structural bond prevents unwanted debris from crossing into your bloodstream while letting nutrients pass freely [2, 3].
2. Operating as a Safe Nitrogen Delivery Vehicle
Think of nitrogen like hazardous cargo on an interstate highway. Your tissues require nitrogen (N2) for muscle repair. However, normal metabolism creates toxic ammonia (NH3) as waste. L-Glutamine acts like a heavy-duty tanker: it safely locks up free nitrogen, neutralizes it, and ferries it across tissues [1, 5]. In the kidneys, it releases ammonium (NH4+) to preserve a healthy acid-base balance [1, 2].
3. Supplying Fuel to Immune First Responders
Think of white blood cells like emergency rescue teams responding to a call. When immune defense activates, specialized white blood cells (lymphocytes and macrophages) multiply at rapid speeds [1, 4]. Clinical research confirms that active immune cells burn L-Glutamine just as fast as glucose [1, 4]. Supplying supplemental glutamine ensures your defensive cells keep the cellular energy they need for daily resilience [1, 4].
Daily Timing, Synergy & Realistic Timelines
Best Time to Take
Take 1 capsule 1 to 3 times daily, preferably on an empty stomach or between meals with 8 ounces of water (H2O) or juice. Specialized transport gateways in the gut wall absorb free amino acids [1]. If taken with whole proteins like meat or dairy, competing amino acids crowd those entry doors. Taking capsules between meals ensures fast, unhindered absorption [1].
Daily Schedule & Dosing Strategy
Space your capsules throughout the day to keep cellular levels steady:
- ✓ Morning Fasted Dose: Take 1 capsule right after waking up to nourish resting gut lining cells after overnight fasting [2].
- ✓ Post-Workout Window: Take 1 capsule 30 minutes following exercise to replenish nitrogen stores burned during training [1, 5].
- ✓ Evening Bedtime Support: Take 1 capsule 30 minutes before sleep to support tissue rebuilding during rest [1, 4].
Smart Pairings & Spacing Rules
- ✓ Complementary Nutrients: Pairs effectively with daily probiotics (supporting microbiome diversity) and Zinc Carnosine for total gastrointestinal lining maintenance.
- ✗ Liquid Temperature Warning: Never swallow capsules with boiling hot tea or coffee. Excessive heat breaks delicate amino acid chemical structures. Always use cool or room-temperature liquids.
What to Expect Over Time
Days 1–7: Rapid cellular uptake begins across the digestive tract. Mucosal cells use free glutamine immediately, promoting digestive comfort and stomach ease [2].
Weeks 3–4: Consistent daily intake reinforces intestinal tight junctions, sustaining gut barrier integrity and promoting regular immune defense responsiveness [1, 3].
Months 2–3+: Cumulative nitrogen balance promotes muscular recovery, healthy structural tissue retention, and lasting everyday vitality [1, 5].
Physical Feel, Sensory Traits & Clean Ingredients
Pill Format & Ease of Use
NOW encapsulates this double-strength formula in clear vegetarian capsules (standard Size "00", measuring approximately 23 mm in length). The smooth plant cellulose shell glides easily down the throat with water, avoiding the chalky texture of large compressed tablets. If you dislike swallowing capsules, pull the two halves apart and stir the pure white powder into cool water, juice, or a smoothie.
Natural Aroma, Taste & Color
The sealed capsule is completely odorless and flavorless. When opened, pure L-Glutamine powder has a mild, clean, faintly sweet taste that dissolves completely with zero lingering bitterness. Natural color variations from bright white to off-white may occur naturally between manufacturing lots.
Other Ingredients Explained
Every non-active ingredient in this clean formula serves an essential functional purpose:
- ✓ Hypromellose (cellulose capsule): A 100% vegetarian shell derived from softwood plant fiber. It contains zero animal gelatin and dissolves quickly in gastric fluid.
- ✓ Stearic Acid (vegetable source): A natural plant-derived fatty acid used as a clean manufacturing lubricant to ensure precise capsule filling without synthetic additives.
- ✓ Silicon Dioxide: A natural food-grade mineral compound that absorbs ambient moisture and prevents fine amino acid crystals from clumping during encapsulation.
Proper Storage
Free-form amino acids naturally attract moisture from the air. Keep your bottle tightly sealed in a cool, dry, dark pantry or cabinet after opening. Avoid storage in humid environments like bathrooms or near kitchen stovetops. The bottle is made from 100% PCR (post-consumer recycled) resin to support environmental sustainability.
Manufacturer Quality & Lab Testing Standards
Never gamble your health on cheap big box store brands. Many generic discount supplements sold at mass retailers are made by contract packagers that skip vital safety testing. Independent audits frequently discover that discount amino acids carry heavy metals, unlisted fillers, or fake nitrogen spikes. NOW Foods protects your family by maintaining private in-house testing protocols that exceed industry benchmarks:
- ✓ ISO/IEC 17025:2017 Accredited Laboratories: NOW conducts over 19,000 analytical tests every month in their world-class facilities to verify raw material authenticity and finished product safety.
- ✓ ICP-MS Heavy Metal Testing (Parts-Per-Billion Precision): Using Inductively Coupled Plasma Mass Spectrometry, every incoming lot is screened for lead, arsenic, cadmium, and mercury to beat USP and California Proposition 65 limits.
- ✓ HPLC Molecular Potency Verification: High-Performance Liquid Chromatography verifies that each capsule delivers 100% true L-enantiomer free-form glutamine with zero synthetic adulteration.
- ✓ Microbiological Pathogen Bio-Screening: Production batches undergo rigorous microbial plating to confirm the complete absence of Salmonella spp., Escherichia coli, and Staphylococcus aureus.
- ✓ Audited cGMP Manufacturing: Facilities are independently audited and certified by UL Solutions and maintain an "A-rated" cGMP registration through the Natural Products Association (NPA).
Complete Supplement Facts Panel
Supplement Facts
Serving Size: 1 Veg Capsule
Servings Per Container: 240
| Description | Amount per Serving | % Daily Value |
|---|---|---|
| L-Glutamine (Free-Form) | 1 g (1,000 mg) | ** |
** Daily Value not established.
Other Ingredients: Hypromellose (cellulose capsule), Stearic Acid (vegetable source) and Silicon Dioxide.
Allergen Notice: Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.
This double strength product has twice the L-Glutamine (1,000 mg per capsule) as in our regular strength product (500 mg per capsule).
Natural color variation may occur in this product. Store in a cool, dry, dark place after opening. This bottle is made from 100% PCR (post-consumer recycled) resin. Made and quality tested in the USA with globally sourced ingredients.