We apologize for the inconvenience, but at this time we are unable to ship this product to our valued customers in Canada. We appreciate your patience and understanding as we strive to provide the best service possible. Thank you for considering L-Tryptophan by LIDTKE, and we hope to be able to serve our Canadian customers soon.

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Supports Healthy Sleep & Mood

L-Tryptophan is the amino acid most lacking in the American diet and probably the amino acid most critical to emotional health and normal, refreshing sleep.

But there is more. Science now demonstrates that serotonin helps convert stem cells into neurons that enhance memory and cognition. Animal studies found even small amounts of L-Tryptophan improve learning, memory and long-term retention.

L-Tryptophan is a natural building block of serotonin, the neurotransmitter that plays an important role in appetite, mood, normal sleep patterns, and nervous-system health.* When your body needs extra help producing serotonin for peaceful sleep and a more relaxed outlook, choose LIDTKE L-Tryptophan.*

TryptoGOLD®: LIDTKE’s own naturally produced, Ultra-premium L-Tryptophan, custom manufactured to surpass the highest European (EP) standards. LIDTKE always strives to offer the finest L-Tryptophan available anywhere.

No added gluten, yeast, wheat, corn, soy, dairy, eggs, tree nuts, peanuts, fish, shellfish, salt, sugar, artificial color or flavor, or preservatives. Non-GMO

DIRECTIONS: (Adults): Take one (1) capsule or as directed by a health-care professional. Best if taken at bedtime or between meals.

INGREDIENTS: L-Tryptophan, TryptoGold*, Vegan capsule (hypromellose - derived from plant cellulose).

CAUTION: KEEP OUT OF REACH OF CHILDREN. If you are pregnant, lactating, taking any medications (especially MAOIs, Tricyclics, or SSRIs), or have a medical condition, consult your doctor. Discontinue use if adverse reaction occurs. Do not use if seal is damaged or missing. Keep lid tightly closed. Keep in a cool, dry place.

Thank you for choosing L-Tryptophan by LIDTKE. We sincerely wish the best of health for you and your family.

Additional information


30 Capsules, 60 Capsules, 120 Capsules, 180 Capsules, 250 Grams Powder


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