L-Glutamine 500 mg
Source Naturals
L-Glutamine 500 mg
Glutamine 500 mg
Score 25.0
A 500mg L-Glutamine capsule from Source Naturals that, despite its low individual serving price, becomes expensive and impractical for users seeking a therapeutically effective daily dose for common health and fitness goals.
Quantity: 100 Capsule(s) • (100 servings)
Goals:
Digestive Health
Score 25.0
A 500mg L-Glutamine capsule from Source Naturals that, despite its low individual serving price, becomes expensive and impractical for users seeking a therapeutically effective daily dose for common health and fitness goals.
Analysis
This Source Naturals L-Glutamine product delivers 500 mg per capsule, similar to other offerings by the brand and in the market. Its stated goals, including immunity, fitness, muscle gain, and digestive health, typically require higher doses of L-Glutamine (5-10 grams) for noticeable effects, as widely supported by online nutritionists and scientific reviews. Consequently, achieving a therapeutically relevant dose with these capsules would necessitate consuming 10 or more capsules daily, rendering it costly and inconvenient compared to readily available bulk L-Glutamine powder alternatives. The slightly lower review count compared to other 500mg options suggests less market presence or preference.
Pros
- Low individual capsule price, making it seem affordable per serving
- Convenient capsule form, which many users prefer over powder
Cons
- Very low dose per serving (500mg), making it difficult and expensive to achieve therapeutic levels
- Higher cost for an effective daily dose (e.g., 5g) compared to bulk L-Glutamine powders
- Requires taking multiple capsules daily for any significant impact on stated goals
Warnings
- None specific to the ingredient. Users should be mindful of the low dosage and consider if it aligns with their intended use and dosage requirements, as taking multiple capsules will increase daily expenditure considerably.
$9.37($0.09 per serving)
 iHerb | $ 9.37 | |
 Vitacost | $ 9.79 | |
 Pure Formulas | $ 10.85 |
Effectiveness for goals
Glutamine is a vital fuel source for intestinal cells and plays a key role in maintaining the integrity of the gut barrier. It helps support the health of the intestinal lining, crucial for nutrient absorption and protecting against harmful substances.
L-Glutamine is an amino acid, a building block for proteins, and is the most abundant free amino acid in the human body. It plays a crucial role in immune function, intestinal health, and provides fuel for cells in the gut lining. The body can produce glutamine, but supplemental forms are sometimes used.
Research indicates that glutamine plays a critical role in maintaining intestinal barrier function and reducing gut permeability, especially in conditions involving increased gut stress or injury. While promising, more studies are needed to confirm its widespread effectiveness for "leaky gut" in the general population.
L-Glutamine is a vital nutrient for the cells lining the small intestine, providing a primary energy source for enterocytes. It is believed to help maintain the integrity of the gut lining, potentially reducing intestinal permeability. This makes it a popular supplement for supporting overall digestive health.
Glutamine is often studied for its potential role in replenishing glycogen stores and reducing muscle soreness after intense exercise. Some research suggests it may aid in post-workout recovery, particularly under conditions of heavy training or stress.
Dosage, timing & forms
For muscle recovery, many individuals choose to take Glutamine immediately after a workout. Some also take an additional dose before bed or spread throughout the day. This timing aims to support the body's natural recovery processes.
Typical dosages for L-Glutamine range from 5 to 10 grams per day, often divided into multiple doses. For specific applications like intense athletic recovery or gut health, some individuals may use slightly higher amounts under guidance. It is generally advisable to start with a lower dose and adjust as needed.
Common daily dosages for L-Glutamine supplementation often range from 5 to 20 grams, depending on individual needs and goals. It is frequently split into multiple smaller doses throughout the day. Specific amounts can vary for different applications like exercise recovery or digestive support.
For supporting gut health, dosages for Glutamine can vary, but generally range from 5 to 10 grams per day. This amount is often divided into smaller doses taken a few times daily. Consistent use over time is typically recommended.
For consistent benefits, Glutamine is often taken daily. Depending on the total dosage, it might be split into 2-3 smaller doses throughout the day to maintain elevated levels. This approach is common for supporting muscle recovery, immune function, or gut health.
Safety & interactions
Yes, L-Glutamine is generally considered safe for most healthy adults when taken at recommended dosages. It is a naturally occurring amino acid in the body and in many foods. However, individuals with certain medical conditions should consult a healthcare professional before use.
Glutamine may interact with certain medications, including chemotherapy drugs or anti-seizure medications. It's crucial to consult a healthcare professional before taking glutamine if you are on any prescription drugs. They can advise on potential interactions and safe usage.
At standard dosages, side effects from L-Glutamine are uncommon and usually mild, potentially including digestive upset like nausea, gas, or mild stomach pain. Very high doses could potentially lead to more significant issues. If adverse reactions occur, discontinuing use and consulting a professional is advised.
Glutamine is generally well-tolerated, but some individuals may experience mild side effects such as nausea, stomach upset, or gas. These effects are typically rare and often resolve with dose adjustment or discontinuation. Severe side effects are uncommon with appropriate use.
L-Glutamine is generally not associated with significant interactions with most medications or supplements. However, individuals taking certain medications, particularly those for cancer or liver/kidney conditions, should consult a healthcare provider. There's limited data on specific interactions, so caution is always recommended.
Ingredients
| Ingredient | Amount per serving |
|---|---|
L-Glutamine | 500 mg |
Gluten Free Adults 18–50 Dairy Free
Report overviewCategories
Glutamine 30.0
As a basic L-Glutamine supplement, it fits the collection, but its low dosage per serving translates to a high cost per gram for an effective daily intake, making it a less competitive option overall in the glutamine market.
Goals
Immunity 30.0
The 500mg dose is significantly below the amount generally considered effective for providing substantial immune system support, especially during periods of stress or intense training, based on expert consensus.
Fitness 25.0
This dosage is insufficient to provide meaningful benefits for muscle recovery, reducing delayed onset muscle soreness (DOMS), or enhancing athletic performance when compared to commonly recommended doses for fitness enthusiasts.
Digestive Health 25.0
While L-Glutamine is beneficial for gut lining health, the 500mg dose is generally considered too low to provide therapeutic support for significant digestive health improvements or repair, as evidenced by nutritionist recommendations.
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