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Get it between 2025-08-19 to 2025-08-26. Additional 3 business days for provincial shipping.
Support your serotonin levels—Serotonin is a neurotransmitter that is involved in restful sleep and positive mood. Your body needs adequate levels of the amino acid tryptophan to make it.
Get some shuteye—Modern lifestyles make it hard to get enough rest. L-Tryptophan encourages serotonin production, which in turn promotes restful, restorative sleep.
Mood & satiety—Tryptophan promotes healthy mood as well as satiety, the sensation of being full. Speaking of mood: tryptophan encourages your body’s healthy response to stress.
Ingredients matter—We use the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every one.
Live your healthiest life—We believe the answers to a healthier life are in reach, and that scientific research is the key to getting there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.
Serotonin is a neurotransmitter in the brain associated with positive moods and restful sleep. To produce and maintain optimum serotonin levels, your body requires tryptophan, an essential amino acid the body can’t produce. Life extension offers L-Tryptophan capsules to broadly and powerfully support tryptophan levels already within the normal range.