Loading...
Loading...
The THORNE - NAC - N-Acetylcysteine - 500mg - Supports Respiratory from THORNE is engineered to deliver results you can feel.
BCAAs can support recovery and reduce muscle soreness — this is a well-formulated option.
THORNE's BCAA supplement supports muscle recovery and reduces exercise-induced fatigue.
NSF Certified for Sport — tested for banned substances and label accuracy, making it a trusted choice for competitive athletes.
A practical addition to your daily wellness routine.
Suitable for vegetarians, so you can supplement confidently on a plant-inclusive diet.
Strikes a good balance between quality ingredients and reasonable pricing.
Typically ranges from $30–$35 — a competitive price point for the US market.
A well-rounded offering from THORNE that checks the right boxes for most users.
The brand behind this product — their story and what they stand for.
Physician-trusted supplement brand used by elite athletes and partnered with Mayo Clinic. NSF Certified for Sport.
Understand which fitness goals this product is best suited for.
General Health
A solid addition to your daily wellness routine, supporting overall nutrition and vitality.
Muscle Gain
Supports muscle growth and recovery when combined with resistance training and a protein-rich diet.
A quick look at pricing, tier, and how it stacks up against the category average.
Step-by-step usage instructions so you get the most out of every serving.
Mix 1 scoop with 400–500ml of cold water.
Sip during your workout (intra-workout) or immediately after training.
Can also be taken between meals on rest days for recovery support.
If you already consume enough protein (1.6–2g/kg body weight), BCAAs may offer diminishing returns.
See how this product compares to similar options in its category.
| This Product | NOW Foods | Bronson | Nature's Trove | |
|---|---|---|---|---|
| Price | $33.00 | $7.99 | $8.97 | $9.98 |
| Per Serving | - | - | - | - |
| Servings | — | — | — | — |
| Lab Tested | ✓ | ✓ | ✓ | ✗ |
| Rating | 4.7 ★ | 4.5 ★ | 4.7 ★ | 4.6 ★ |
Common questions about this product — answered clearly and honestly.
Yes, this product is vegetarian-friendly. It does not contain any non-vegetarian ingredients.
Yes, this product has been lab tested by NSF Certified for Sport. Third-party lab testing verifies that the product contains what the label claims, giving you confidence in its quality and purity.
NOW Foods
NOW Foods Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules
Bronson
Bronson L-Lysine Defense Immune Support Complex 1500 MG L-Lysine Plus Olive Leaf, Garlic, Vitamin C and Zinc - Non-GMO, 90 Vegetarian Capsules
Nature's Trove
Nature's Trove L-Theanine 200mg 120 Vegetarian Capsules
Best Naturals
(New Improved Formula) Best Naturals L-Arginine 1000 mg 120 Tablets - Pharmaceutical Grade L Arginine Supplement Promotes Nitric Oxide Synthesis
In-depth guides and articles to help you make a more informed choice.
Best BCAA Supplements 2026 — Do You Actually Need Them?
Xtend, ON Amino Energy, and Thorne compared. When BCAAs help, when they are redundant, and the best picks if you do need them.
7 min read
Beginner GuideBest Supplement Stack for Beginners 2026 — The 4-Step System That Works
Most beginners waste money on supplements they do not need. Start with these four: whey protein, creatine, Vitamin D3, and omega-3. Everything else can wait.
10 min read
