L-Tryptophan – 400 mg (Tryptophan)
L-tryptophan from Greatlife is a pure, well-researched essential amino acid of pharmaceutical grade sourced from Japan. L-tryptophan plays a central role in the body’s production of serotonin and melatonin, which are important for emotional balance and healthy sleep. It is used to support relaxation, mood, and overall sleep quality as part of the body’s natural processes. L-tryptophan from Greatlife is a high-quality supplement made with carefully controlled raw materials, free from additives, contaminants, and artificial substances.
- Pharmaceutical-grade L-tryptophan of the highest purity from Japan
- A well-researched precursor to serotonin and melatonin
- Traditionally used to support sleep, falling asleep, and emotional balance
- Free from dairy, soy, sugar, gluten, and GMOs
- Free from artificial sweeteners, colorings, preservatives, hydrogenated oils, corn syrup, and magnesium stearate
- Dark glass jar free from BPA, phthalates, and other endocrine-disrupting substances
- Manufactured under HACCP standards in the EU
- Suitable for vegans and vegetarians
- Fast delivery (2–4 days)
- Free shipping over €59
- In stock
L-Tryptophan – 400 mg (Tryptophan)
L-tryptophan of pharmaceutical grade from Greatlife is the purest L-tryptophan we have found. It is a high-quality, well-researched essential amino acid from Japan, developed with a focus on maximum purity and safety. L-tryptophan plays a central role in the body’s production of serotonin and melatonin, which are essential for emotional balance and a healthy sleep cycle. Unlike lower-grade raw materials, L-tryptophan from Greatlife is characterized by documented purity and carefully controlled manufacturing. This supplement is clean, free from additives, toxins, and GMOs.
For best results, we recommend taking L-tryptophan approximately 30–60 minutes before bedtime when the goal is to support relaxation and sleep. It can also be used during the day when support for mood and emotional balance is needed. The product can be taken daily and is suitable for both occasional use and as part of a long-term routine to support nervous system stability.
Biologically, L-tryptophan functions as a precursor to serotonin, a neurotransmitter that influences mood, calmness, and overall well-being. Serotonin can in turn be converted into melatonin, which regulates the circadian rhythm and sleep quality. Through this natural biochemical pathway, L-tryptophan supports the body’s own processes for recovery and balance.
Why L-tryptophan?
L-tryptophan offers several unique benefits compared to many other supplements for the nervous system and sleep:
Support for sleep and circadian rhythm
- L-tryptophan is a natural building block for melatonin.
- It is used to support falling asleep and maintaining a stable sleep rhythm.
Support for mood and emotional balance
- L-tryptophan is a precursor to serotonin.
- It may help support emotional stability and a sense of inner calm.
Natural support for the nervous system
- L-tryptophan supports the body’s own neurotransmitter systems.
- It works through the body’s natural biochemical processes.
L-tryptophan of the highest quality
L-tryptophan from Greatlife is a pure, premium-quality amino acid, free from dairy, soy, sugar, gluten, and GMOs, and without artificial sweeteners, colorings, preservatives, hydrogenated oils, corn syrup, or magnesium stearate. The product is delivered in a dark glass jar free from BPA, phthalates, and other endocrine-disrupting substances. Manufacturing takes place within the EU under strict quality and hygiene standards, and the product is suitable for both vegetarians and vegans.
| Contents per daily dose (1 capsule) | % of DRI | |
|---|---|---|
| L-Tryptophan (Pharmaceutical-grade) | 400 mg | * |
DRI = Daily Reference Intake
* DRI not established
Other ingredients
Microcrystalline cellulose Vivapur® (bulking agent), vegetarian capsule Vcaps® Plus (hydroxypropyl methylcellulose).
Directions for use
Take 1 capsule daily, 30–60 minutes before bedtime, on an empty stomach. If you have difficulty swallowing, the capsule can be opened and the contents sprinkled into water and consumed immediately.
Please note
Do not exceed the recommended daily dose. Keep out of reach of children. Food supplements should not be used as a substitute for a varied diet. A varied, balanced diet and a healthy lifestyle are important. Store in a dry, dark place at room temperature. Do not place food supplements in direct sunlight, in a humid environment, or near a heat source. Consult your doctor before use if you are pregnant, breastfeeding, or have a medical condition. Store in a cool, dry place. Made in the EU. Close the container tightly.
What is L-Tryptophan 500 mg?
L-Tryptophan 500 mg is a dietary supplement that contains the amino acid L-tryptophan of the highest purity. L-tryptophan is an essential amino acid, which means that the body cannot produce it on its own and must obtain it through diet. It is used in the body as a building block for several important neurotransmitters and hormones, including serotonin and melatonin, which are associated with mood, relaxation, and sleep.
What does L-tryptophan do in the body?
L-tryptophan participates in several central biological processes. It acts as a precursor to serotonin, a neurotransmitter that affects mood, mental balance, and well-being. Serotonin can in turn be converted into melatonin, a hormone involved in the body's circadian rhythm and sleep regulation. Therefore, L-tryptophan is often used in supplements aimed at supporting mental balance and a normal sleep cycle.
Can L-tryptophan contribute to better sleep?
L-tryptophan is often used as support for sleep because it is a natural building block in the body's production of melatonin. When the body has access to sufficient L-tryptophan, it can more easily form serotonin and subsequently melatonin, which is an important part of the body's natural sleep regulation. For this reason, L-tryptophan is often taken in the evening.
Can L-tryptophan affect mood and mental balance?
Since L-tryptophan is a precursor to serotonin, it is often used as a nutritional support for mental balance. Serotonin plays an important role in the brain's signaling system and is linked to feelings of well-being, calmness, and emotional stability.
When should L-tryptophan be taken?
L-tryptophan is often taken in the evening, about 30 to 60 minutes before bedtime, especially if the goal is to support the body's natural sleep processes. Some also choose to take it during the day to support mental balance.
Should L-tryptophan be taken with or without food?
L-tryptophan is often taken on an empty stomach or with a light meal. Amino acids can compete with other amino acids for absorption, which is why many prefer to take L-tryptophan between meals or before bedtime.
How much L-tryptophan does the product contain?
Each capsule contains 500 mg of L-tryptophan. The dosage makes it easy to adjust the intake according to individual needs.
Is L-tryptophan safe to take daily?
L-tryptophan is a naturally occurring amino acid found in many foods, such as eggs, fish, and turkey. As a supplement, it is often used daily by individuals looking to support sleep, recovery, or mental balance.
Is the product free from common allergens and additives?
L-Tryptophan – 500 mg (Tryptophan) from Greatlife is developed without gluten, soy, artificial colorings, preservatives, or GMOs. It is created with a focus on purity and high raw material quality.