L-Tryptophan - 90x 500mg

Kratox L-Tryptophan delivers 500mg of this essential amino acid in its purest form. By supporting serotonin production, it helps promote mood balance, relaxation, and healthy sleep cycles.

• Supports serotonin and melatonin production
• Promotes natural mood regulation
• Encourages deeper, more restful sleep
• No artificial additives or preservatives
• 90-day supply – 1 capsule per day

L-Tryptophan in More Detail

L-Tryptophan is an essential amino acid required for the production of serotonin, the neurotransmitter central to emotional balance and calmness. Through serotonin, it also supports melatonin production, helping to regulate the body’s natural sleep-wake cycle.

Supplementation with L-Tryptophan has been shown to improve sleep quality and reduce sleep latency, particularly in individuals affected by stress, low serotonin, or poor dietary intake. Unlike sedatives, it works naturally with the body’s pathways to support relaxation and mental clarity.

As the body cannot produce L-Tryptophan, it must be obtained from diet or supplementation. Kratox L-Tryptophan provides a clean, bioavailable source to help maintain neurotransmitter balance for mood, sleep, and cognitive performance.

Beyond its effects on serotonin and melatonin, L-Tryptophan contributes to niacin (vitamin B3) synthesis and general protein metabolism, supporting energy production and cellular repair.

The Ingredients

Each capsule contains 500mg of high-purity L-Tryptophan — an effective daily dose for supporting serotonin and melatonin pathways. With no artificial colours, fillers, or preservatives, this clean-label formula uses only L-Tryptophan and a vegetarian capsule shell.

Suggested Use

Take 1 capsule daily, preferably in the evening before bedtime.

100% Money Back Guarantee*

We're so confident in the effectiveness and quality of this product that if you are not happy with the results after 30 days / one full bottle, we will issue a full refund.

Premium Quality

Kratox L-Tryptophan is made using only the highest quality raw, active ingredients, and is completely free from artificial colours, fillers, preservatives, or binders.

References:
Hartmann, E. (1982). Effects of L-tryptophan on sleepiness and on sleep. Journal of Psychiatric Research.
Silber, B. Y., & Schmitt, J. A. J. (2010). Effects of tryptophan loading on human cognition, mood, and sleep. Neuroscience & Biobehavioral Reviews.
Richard, D. M., Dawes, M. A., Mathias, C. W., Acheson, A., Hill-Kapturczak, N., & Dougherty, D. M. (2009). L-Tryptophan: Basic metabolic functions, behavioral research and therapeutic indications. International Journal of Tryptophan Research.
Hudson, C., & Hudson, S. P. (2013). L-Tryptophan in the treatment of depression and sleep disorders. Alternative Medicine Review.