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O2B 5-HTP High Strength

5.0 (1 review)

$ 19.95$ 39.91

O2B 5HTP is a high-dose 1-a-day capsule to support normal sleep patterns, mood and appetite. O2B 5HTP is made from the Griffonia simplicifolia seed, a naturally occurring amino acid that is the precursor in the biosynthesis of the neurotransmitters serotonin and melatonin.

Out of stock$ 19.95

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$ 39.91

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Each capsule of O2B 5-HTP (5-Hydroxytryptophan) is a high dose of what is the intermediate metabolite between the amino acid L-tryptophan and serotonin. The brain chemical serotonin is important for soothing and calming the nervous system and creates a feeling of well-being. Serotonin supports good mood, emotion and natural sleep patterns. 

Key Benefits:

  • Encourages natural serotonin production
  • Supports normal sleep patterns
  • Supports the feeling of well-being, good mood and emotion
  • Benefits those who have depleted ability to produce serotonin due to stress or over use of recreational drugs

5-Hydroxytryptophan (5-HTP) is an aromatic amino acid naturally produced by the body from the essential amino acid L-Tryptophan. 5-HTP is produced commercially by extraction from the seeds of the African plant, Griffonia simplicifolia. The clinical efficacy of 5-HTP is due to its ability to increase production of serotonin in the brain. 5-HTP is well absorbed from an oral dose, with about 70% ending up in the bloodstream. It easily crosses the blood-brain barrier and effectively increases central nervous system (CNS) synthesis of serotonin. In the CNS, serotonin levels have been implicated in the regulation of sleep, depression, anxiety, aggression, appetite, temperature, sexual behaviour and pain sensation.


Each Capsule Contains:

  • 5-HTP 100mg
  • From Griffonia simplicifolia plant seeds
  • May contain encapsulating aids

Contains No:

Yeast, corn, wheat, artificial flavours or preservatives.


Adults take 1-2 capsules daily (best before bed) or as directed by your health care professional.


If taking prescription medication or have known sensitivities, please consult your health care professional before taking this product.


Do not take if on L-dopa and Parkinson’s disease treatments.

If you are on antidepressants or prescription medication, please consult your health care professional before taking 5-HTP.

1 review for O2B 5-HTP High Strength

  1. Excellent product!

    Review by Gail

    I find O2B 5-HTP superb….April ’19

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