Source Naturals - L-Tryptophan - 120 Capsules

L-Tryptophan for Mood, Sleep & Serotonin Support

Source Naturals L-Tryptophan delivers 500mg of this essential amino acid per capsule, providing natural support for mood balance, restful sleep, and healthy serotonin production. This 120-capsule bottle offers four months of comprehensive support for emotional wellness, sleep quality, and overall mental health.*

Key Benefits

• Serotonin production – Essential precursor for serotonin synthesis, the "feel-good" neurotransmitter*
• Mood support – Promotes positive mood, emotional balance, and mental well-being*
• Sleep quality – Supports healthy sleep patterns and restful, restorative sleep*
• Stress management – Helps support healthy response to everyday stress and emotional challenges*
• Melatonin production – Converts to melatonin to support natural sleep-wake cycles*
• Essential amino acid – Must be obtained through diet or supplementation

Why Choose L-Tryptophan?

L-Tryptophan is an essential amino acid that your body cannot produce on its own, making dietary intake or supplementation necessary. It serves as the primary building block for serotonin, a neurotransmitter crucial for mood regulation, sleep, appetite, and overall emotional well-being. L-Tryptophan also converts to melatonin, supporting healthy circadian rhythms.*

The Serotonin Connection

L-Tryptophan is the starting point for serotonin synthesis in the brain. Once consumed, it crosses the blood-brain barrier and converts first to 5-HTP, then to serotonin. Adequate serotonin levels are essential for maintaining positive mood, emotional stability, healthy appetite, and proper sleep-wake cycles. Low serotonin is associated with mood concerns, sleep difficulties, and increased stress sensitivity.*

Sleep Support & Melatonin Production

Beyond serotonin, L-Tryptophan also serves as a precursor to melatonin, the hormone that regulates your sleep-wake cycle. By supporting both serotonin and melatonin production, L-Tryptophan provides comprehensive support for healthy sleep patterns, helping you fall asleep more easily and enjoy more restful, restorative sleep.*

Mood & Emotional Balance

Clinical research has shown that L-Tryptophan supplementation can support positive mood and emotional well-being, particularly in individuals with low serotonin levels. By providing the raw material for serotonin synthesis, L-Tryptophan helps maintain the neurotransmitter balance essential for emotional resilience and mental health.*

Stress Response Support

Serotonin plays a key role in how your body responds to stress. Adequate L-Tryptophan intake supports healthy serotonin levels, which in turn helps promote a balanced stress response, emotional stability, and overall sense of well-being during challenging times.*

Essential Amino Acid

As an essential amino acid, L-Tryptophan cannot be synthesized by your body and must be obtained through diet or supplementation. While it's found in protein-rich foods like turkey, chicken, eggs, and nuts, many people don't get adequate amounts from diet alone, especially during times of increased stress or poor sleep.*

Source Naturals Quality

Source Naturals has been a trusted name in nutritional supplements for over 40 years, committed to providing science-based formulations using quality ingredients. Each batch is manufactured to strict quality standards to ensure potency and purity.

Suggested Use

Take one to two capsules daily on an empty stomach, preferably 30-60 minutes before bedtime for sleep support, or as directed by your healthcare practitioner. For best absorption, take away from protein-rich meals.

Important: If you are taking antidepressant medications, particularly SSRIs or MAOIs, consult your healthcare provider before use. Do not use if pregnant or nursing.

*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.