
Naturally derived from Griffonia Simplicifolia
- 5-HTP (5-hydroxytryptophan) is a naturally occurring serotonin precursor that is formed in the body from the amino acid tryptophan. Our 5-HTP is extracted from the Griffonia seeds of the African plant Griffonia simplicifolia.
- Unlike L-tryptophan, 5-HTP can cross the blood-brain barrier without a transport molecule and has an average bioavailability of 70%, as impressively demonstrated by Birdsall TC in his 1998 study.1 Many people therefore consciously integrate 5-HTP capsules into their daily lives.
Proven plant extract
- Griffonia extract has long been valued as a herbal source of high-quality 5-HTP.
- Thanks to its natural origin, 5-HTP is an established component of modern nutritional concepts.
Premium quality from Germany
- Each capsule provides a precisely dosed 200 mg of 5-HTP from 667 mg of high-quality Griffonia extract – ideal for a clearly defined 5-HTP dosage and consistent daily intake.
- Pure formulation without unnecessary additives, vegan, gluten-free, and well-tolerated – even with long-term use. Many people prioritize purity and quality when taking 5-HTP long-term.
- 120 capsules for up to 4 months of well-being – carefully filled and laboratory-tested in Germany. Ideal for anyone looking to buy 5-HTP and prioritizing tested premium quality.
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Optimal intake time
Mornings, afternoons, or evenings
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Dosage
Take 1 capsule daily with sufficient food and liquid.
| Quality Criteria | Green Naturals® | Other Manufacturers |
|---|---|---|
| Raw Material & Standardization | ✔ standardized, sustainable | ✕ |
| Purity & Safety | ✔ each batch tested | ✕ |
| Appropriate Dosage | ✔ study-based, 200 mg | ✕ |
| Tolerance | ✔ no additives | ✕ |
| Formulation | ✔ single preparation, small capsule | ✕ |
| Transparency & Responsibility | ✔ clear instructions | ✕ |
| Practicability | ✔ 1 capsule daily | ✕ |
| Evidence & Science | ✔ study-oriented | ✕ |
Our vision at Green Label® is to create products based on purity and transparency. Our approach is to source high-quality raw materials directly from leading producers worldwide to offer a product that is uncompromisingly committed to natural ingredients. Every capsule of our products carries the promise of purity, sustainability, and maximum effectiveness:
- Premium active ingredients as pure substances, directly from leading producers.
- Production and bottling under the highest pharmaceutical standards (GMP, ISO 22000:2018, HACCP).
- Maximum avoidance of all additives; only valuable natural substances are used.
- Vegan capsule shells, 100% free of PEG and other undesirable substances.
- Packaging in environmentally friendly, non-toxic materials for optimal aroma protection.
My name is Dr. Hari Sven Krishnan, founder of Heilpflanzenwohl GmbH and chief pharmacist.
Together with an experienced team of specialists, including Stephan Walz (pharmacist), Marie Schröder (nutritional scientist), and Dr. Christiane Gras (immunologist), we developed Green Naturals.
The result of intensive research with a clear goal: to offer you natural, highly effective products. At Heilpflanzenwohl, quality and purity come first, because we are convinced: "The best medicine comes from nature – we just need to learn how to use it correctly."
Purity is one of our top priorities. That's why we have our raw materials and finished products regularly tested for purity and active ingredient content by independent laboratories. To offer you full transparency, we provide you with an excerpt of important lab tests here.
Lab analysis 5-HTP Capsules • 200 mg • Griffonia Simplicifolia
Laboranalyse 5-HTP Charge 095254901G
| Ingredients | 1 capsule / day | *NRV % |
|---|---|---|
| Griffonia extract | 667 mg | ** |
| • of which 5-HTP | 200 mg | ** |
** no reference available
What is 5-HTP?
What does the abbreviation 5-HTP mean exactly?
What is 5-HTP used for?
What is the 5-HTP dosage?
When should you take 5-HTP?
Taking 5-HTP in the morning or evening - what is better?
How long does it take for 5-HTP to work?
Is 5-HTP dangerous or are there side effects?
Is there a 5-HTP worsening at the beginning?
Can 5-HTP be taken long-term?
L-Tryptophan or 5-HTP - what is the difference?
What is Griffonia?
Are the 5-HTP capsules vegan and free of additives?
Where can you buy 5-HTP?
Is Green Naturals® 5-HTP also available in pharmacies?
Can the 5-HTP capsules be opened?
What experiences are there with 5-HTP?
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Sources
- Birdsall TC. 5-Hydroxytryptophan: a clinically-effective serotonin precursor. Altern Med Rev. 1998 Aug;3(4):271-80. PMID: 9727088.
Remarks
- HACCP (Hazard Analysis and Critical Control Points) is a preventive system for ensuring food safety that identifies and assesses potential hazards in production and minimizes them through targeted control measures. The seal refers to the manufacturing process.
- This is how the grade is calculated: Grade calculation based on star ratings: 5.00 - 4.50 Very good, 4.49 - 3.50 Good, 3.49 - 2.50 Satisfactory, 2.49 - 1.50 Sufficient, 1.49 - 1.00 Poor. For the verification of ratings, no authenticity check of customer reviews is carried out. The ratings are combined from different sources, such as mail-order pharmacies and online marketplaces. Last updated: 13.10.26