L-tryptophan | PharmaTryptophan™

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L-tryptophan is an amino acid essential for the proper functioning of the organism. It is particularly important for the nervous system. As a precursor of serotonin, this amino acid effectively enhances mood. Additionally, L-tryptophan makes it easier to fall asleep by stimulating production of melatonin while facilitating regeneration of the body during a night’s rest.


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L-Tryptophan | PharmaTryptophan™

Properties: L-tryptophan can often be found as an ingredient in dietary supplements that facilitate functioning of the nervous system. It comes from the fact that this amino acid is essential for the human body. Without L-tryptophan our organism wouldn’t function properly because it’s necessary for synthesis of serotonin – a chemical compound that is one of the key neurotransmitters. Enhanced mood and good night’s sleep depend on the proper level of  serotonin. What is more, serotonin participates in key processes that occur in the body. It also regulates blood pressure, libido and appetite. So, when we have more L-tryptophan in our diet, our body produces more serotonin. This contributes to better mental health and comfortable sleeping. At the end of the day, serotonin is called the “happiness hormone” for a reason.

It is worth mentioning that tryptophan can be found in many food products eaten daily. That’s why a balanced diet is crucial to keep tryptophan on the right level. However, in some cases the diet can be insufficient. From time to time it is important to supplement the diet in order to provide vitamins and minerals essential for the body.

Active people most certainly will be interested in L-tryptophan properties due to the fact that it significantly improves stamina. Scientific studies revealed that sportspeople supplementing L-tryptophan can exercise for a longer period of time and are less fatigued during workout. Additionally, tryptophan supplementation increases beta-endorphins level which might help to ease the pain and reduce stress.

Therefore, L-tryptophan supplementation is recommended especially when we would like to support central nervous system functioning, enhance mood or sleep well.

Occurrence: Tryptophan is present in a wide variety of primary products and food. Its main sources are high protein products of animal origin, like meat (poultry, pork, beef), fish (tuna, codfish, salmon, herring), egg white, milk and cheese. Additionally, tryptophan can be found in products of plant origin, for example in soya, lentil, chickpea, flaxseed, sesame, sunflower seeds, pumpkin seeds, rice, oat flakes, bananas, pineapples, almonds, nuts, or cocoa.

Biochemistry: Tryptophan (Trp, L-tryptophan) is an organic chemical compound belonging to a group of essential (exogenous) amino acids. It cannot be synthesized in the human body, thus it should be consumed with food. Trp is one of the 20 amino acids that are used in the process of protein synthesis as the main building material. It is absorbed in the intestinal tract. What is more, it exhibits high bioavailability, is fat-soluble and easily crosses the blood-brain barrier. Tryptophan is converted to 5-HTP in the body and directly affects the production of serotonin – a “happiness hormone”. Indirectly, Trp acts as a precursor to melatonin (sleep hormone). Additionally, it takes part in synthesis of niacin – a compound involved in carbohydrates and fats processing, but also in hydrochloric acid production in the stomach. Due to this fact, Trp streamlines digestion.

Fun fact: Tryptophan is the only natural precursor of the “happiness hormone” – serotonin. That is why L-tryptophan dietary supplementation provides significant mood enhancement.

How does L-Tryptophan | PharmaTryptophan™ work?

Supports good mood: Serotonin is a neurotransmitter which is commonly called the “happiness hormone”. Its proper level is required to keep a positive attitude and maintain inner balance. The results of scientific studies have indicated that L-tryptophan supplementation increases serotonin activity. Tryptophan is a precursor to this neurotransmitter, so it’s the primary product for serotonin synthesis. When tryptophan is delivered to the body, it intensifies serotonin production. A lot of clinical trials have confirmed tryptophan’s positive influence on human well-being.

Improves sleep quality: Tryptophan is a precursor of serotonin but it is also involved in the production of melatonin which sometimes is referred to as a “sleep hormone”. Increased melatonin level in the evening is a signal for our body that it’s the time for a good night’s rest, and so we become sleepy.. Occasionally, due to many various factors, this neurohormone’s activity decreases. That might cause sleep problems and make sleeping really uncomfortable. The results of the scientific research have shown that tryptophan allows the melatonin level to increase. Thus, it makes it easier to fall asleep and improves sleep quality which is important for organism regeneration.

Improves stress resilience: Serotonin is an extremely important neurotransmitter. Not only does it determine good mood but it’s also important for coping with difficulties. Its measurable effect is a decrease in cortisol level. This hormone is released when the stressor is present. Most unfavorable effects of stress, like high blood pressure or digestion problems, are caused by excessive cortisol release. Clinical trials have confirmed that taking L-tryptophan helps to relieve those mentioned (and other) stress symptoms. Additionally, it makes it easier to keep buoyancy even when life difficulties occur.

Increases physical endurance: Clinical trials involving sportsmen have proved that tryptophan supplementation significantly improves stamina. One of the studies revealed that participants who took tryptophan could work out longer by 50% compared to the placebo group. Scientists suspect that this effect may be related to this amino acid’s ability to improve beta-endorphins production process. These neurohormones are released during physical training and they reduce pain sensitivity. What is more, beta-endorphins promote the sense of well-being and happiness. No less important is the L-tryptophan’s ability to increase melatonin level and to regulate a day-night cycle. In sum, improved organism regeneration may result in better physical fitness.

L-Tryptophan | PharmaTryptophan™ product specification


  • powdered raw ingredient
  • L-tryptophan >99%; pharmaceutical quality
  • PET measuring tool 2.5 ml ~500 mg
  • airtight ALU-PET bag
  • nutrition, neuroregulation, herbal medicine
  • ingredient admitted to trading in the EU and the US

How to use L-Tryptophan | PharmaTryptophan™?


  • 400 – 800 mg
  • 1 – 2
  • without food
  • during the day / before bedtime
  • 6 weeks of using – 2 weeks of break

How to stack L-Tryptophan | PharmaTryptophan™?

To improve general mood:
To improve sleep quality:
To improve stress resilience:
To increase physical endurance:

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The above information about products should be considered a historical and scientific facts, not a recommendation on how to use a specific substance. Dietary supplements should not be treated as an alternative to a healthy lifestyle and balanced diet. The above information is not medical advice. Every use of a dietary supplement or herbal/nootropic compound should be consulted with a doctor or a specialist. Dietary supplements as well as nootropic and herbal compounds should not be mixed with medication. Our products should not be used by breastfeeding women and by the people under the age of 18.