LifeSource Vitamins L-Tryptophan — 500 mg, 60 Veg Caps
LifeSource Vitamins L-Tryptophan delivers 500 mg of this essential amino acid that serves as a precursor to serotonin and melatonin and is commonly used to support mood balance, restful sleep, and emotional wellness.*
✅ Family-Owned Since 1992
✅ Made in the USA
✅ Third-Party Tested
⭐ Trusted by customers nationwide with over 7,000 5-star reviews
Key Benefits
- Supports mood balance*
- Promotes restful sleep and sleep continuity*
- Supports emotional wellness*
- Supports healthy sleep patterns*
Key Ingredients
- L-Tryptophan 500 mg — essential amino acid precursor to serotonin and melatonin*
Who May Benefit Most
- Those seeking support for mood balance*
- Individuals looking to promote restful sleep*
- Anyone interested in supporting serotonin and melatonin pathways*
- People preferring a convenient capsule format for daily wellness*
Independently 3rd-Party Tested
Identity • Purity • Potency • Label Accuracy
Produced in FDA-registered, GMP-certified facilities.
See Our 3rd Party Testing →
Why Trust LifeSource Vitamins?
- Family-Owned and Operated Since 1992
- Serving Customers Nationwide Since 1992
- More Than 7,000 Verified 5-Star Reviews (4.8–4.9 average)
- Made in the USA in FDA-registered, GMP-certified facilities
- Independently Third-Party Tested for Identity, Purity, Potency & Label Accuracy
- Non-GMO • Gluten-Free • Family-Owned Company
Our Quality Promise
Since 1992, LifeSource Vitamins has remained committed to providing high-quality supplements made with carefully selected ingredients and rigorously tested for identity, purity, potency, and label accuracy. As a family-owned company, we believe you deserve transparency, consistency, and products you can trust to support your wellness goals.
Wellness Research & Education
LifeSource Vitamins evaluates wellness research and educational resources from respected organizations including the National Institutes of Health (NIH), Mayo Clinic, Harvard Health, Johns Hopkins Medicine, Cleveland Clinic, Mount Sinai, and other trusted health resources.
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L-Tryptophan is an essential amino acid precursor to serotonin and melatonin — research has explored its role in supporting mood and sleep wellness pathways.*
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L-Tryptophan supports emotional wellness — commonly included in formulas for mood and stress support.*
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L-Tryptophan supports restful sleep — helps promote healthy sleep patterns and sleep continuity.*
Suggested Use
Take 1–2 capsules daily on an empty stomach, with the final dose at bedtime, or as directed by your healthcare professional.*
Product Specifications
• Serving Size: 1–2 Vegetable Capsules (500–1,000 mg L-Tryptophan)
• Servings Per Container: 30–60
• Form: Vegetable Capsules
• Free From: Non-GMO, vegan, gluten-free
Often Paired With
Shop More Mood & Stress Support Products →
Customer Satisfaction & Quality Commitment
This product is backed by LifeSource Vitamins' commitment to quality and customer satisfaction, supported by over 7,000 verified five-star reviews across our product catalog.
— Verified LifeSource customers.
FAQ
Q: When is the best time to take L-Tryptophan?
A: Many people take it in the evening on an empty stomach to support restful sleep.*
Q: Can I take it with other supplements?
A: Yes, but consult your healthcare professional if taking medications that affect serotonin (e.g., SSRIs).
Q: Is this product vegan?
A: Yes. It uses vegetable capsules and is free from animal-derived ingredients.
Questions? Call us at 800-567-8122 or email info@lifesourcevitamins.com
*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.
Supports mood balance, emotional wellness, and healthy sleep patterns with 500 mg L-Tryptophan. 3rd-Party Tested & Family-Owned Since 1992.*
