L-Tryptophan 500 mg (90 Capsules)

€22.49 *

Available for prompt delivery; Delivery time: approx. 3 – 4 weekdays

56 Gramm (€40.16 * / 100 Gramm)

Prices incl. VAT plus shipping costs

  • gluten-free
  • GMO-free
  • lactose-free
  • soya-free
  • vegan
  • without artificial colouring
  • without artificial flavors
  • without preservatives

Erhältlich online und in Ihrer Apotheke oder Drogerieabteilung.

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Art-No. 12497
PZN: 09612331
EAN 4260085382279
Packing size: 90 capsules
Capsule shell type: Vegetarian capsule shell

Take 1 - 2 capsules unchewed daily 30 minutes before going to bed.

Ingredients: L-tryptophan, hydroxypropylmethylcellulose (capsule)
Active content: L-tryptophan per 2 capsules contain: 1000 mg

Convince yourself

Look here for the current customer information and test report for all our products of an independent German laboratory and convince yourself of the safety. All ZeinPharma products are regularly tested by independent laboratories for micro-organisms to ensure you an all-round, safe product.

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L-Tryptophan 500mg

    Profit from ZeinPharma®'s natural L-tryptophan in fermented quality.

    For diet management of sleep disorders

    Fermented natural quality

    500mg per 1 capsule

    Suitable for vegetarians

    Natural L-Tryprophan

L-tryptophan in the body

With L-tryptophan you intake the precursor of serotonin! Because when L-tryptophan reaches the brain, it is converted there into serotonin. If enough serotonin is present in the body, it can be converted in the evening to melatonin - which is colloquially known as "sleep hormone".


Melatonin is formed in the brain in the pineal gland in the dark. It influences the day-night rhythm and prepares the body for the upcoming night sleep.

L-Tryptophan - the essential amino acid

The L-Tryptophan capsules provide your body with a vital amino acid, since you cannot form L-tryptophan yourself. On the contrary: L-tryptophan is an essential amino acid that must be supplied to the body from outside.


Amino acids are used in the body to build proteins. Proteins can have a variety of tasks and functions, such as there are transport or structural proteins. In addition, amino acids are further decomposed in the body and are converted into other endogenous substances.

Make sure you sleep well

Get your precious sleep! You need sleep and your body as well, since during sleep is the time of the day when the body regenerates and creates the prerequisites for having energy the next day. The required amount of sleep varies between 6 and 9 hours per indvidual.


No matter how much sleep you need on average to feel well rested, you should avoid a lack of sleep. Whoever goes to bed too late, gets up too early - will feel drained and weak in the long run.

Sleep disorders are common

As concerns sleep disorders you are not alone! It is estimated that about 30 percent of Germans suffer from sleep disorders.


There is concern of chronic sleep disorders if you:


     for more than 1 month

     three or more nights a week

     not deep and continuous sleep

     and feel tired and irritable during the day.

The study-confirmed solution: L-tryptophan

Several international studies prove the sleep-promoting effect of L-Tryptophan! Because L-tryptophan has the property of being converted into serotonin in the body. This serves as a starting substance for the sleep-promoting hormone melatonin.Sleep disorders can be treated effectively with dietetic L-tryptophan. Consume 2 capsules equivalent to 1000 mg of the essential amino acid L-tryptophan about half an hour before going to bed.

Tip: Carbohydrates increase L-tryptophan intake

The best is to take L-tryptophan with a carbohydrate-rich snack or drink - such as fruit juice. Because: Carbohydrates improve the uptake of L-tryptophan into the brain.


On the contrary, protein-rich meals inhibit the uptake of L-tryptophan into the brain. During digestion, the proteins in the food are decomposed into amino acids. Then these amino acids compete at the blood-brain with L-tryptophan for uptake into the brain. The more the free amino acids in the blood at the same time with L-Tryptophan, the less L-Tryptophan can be absorbed into the brain.

Purely natural obtained from fermentation

Benefit from natural L-Tryptophan gained from fermentation! It is obtained without the use of animal products and is therefore suitable for vegetarians, but also ideal for people who want to renounce animal ingredients for other reasons.


In order to be able to offer you an all-round vegetarian product, the L-Tryptophan capsules are now available with a vegetarian capsule shell. This consists of 100 percent vegetarian cellulose.

Production at the highest quality level

ZeinPharma® L-Tryptophan Capsules provide you the highest quality dietary food. Only tested, and pure raw materials are being used in the production, while the highest standards of hygiene prevail. Thus, you get a completely pure product of highest quality.


Each batch of L-Typtophan capsules is again tested for purity from external laboratories. Only if the product is absolutely pure and meets the highest quality standards of ZeinPharma®, it receives allowance for sale.

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