Tryptophan — Mood & Sleep
58 products · 45 in stock · €9.35–€41.90 · from €0.09/serving · Estonia 1–3 business days, free from €50.00
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All products in Tryptophan — Mood & Sleep (58)
- BIOTECHUSA Beta Alanine 90 Capsules€16.70
- ICONFIT Good Sleep - 90 Capsules€13.55
- ICONFIT L-Arginine - 90 Capsules€13.55
- MST Amino Pump L-Citrulline + L-Arginine 60caps€17.75
- MST Arginine HCL 300g Unflavored€21.95
- MST Beta-Alanine 1200mg 60caps€15.65
- MST Citrulline 500g Unflavored€31.40
- MST Citrulline RAW 300g Unflavoured€24.05
- MST L-Arginine 120caps€18.80
- MST L-Citrulline 1100mg 120caps€18.80
- MST L-Glutamine RAW 500g Unflavored€31.40
- MST L-Glycine vegan 1000mg 120caps€20.90
- MST L-Tryptophan 500mg 60caps€14.60
- MST Taurine 120caps€16.70
- NOW Arginine & Ornithine 100 Veg. Caps€21.95
- NOW Beta Alanine 750mg 120 Caps€29.30
- NOW L-Arginine 500mg 100 veg. caps.€13.55
- NOW L-Tryptophan 500mg 60 veg caps€23.00
- NOW Taurine 500mg 100 veg caps€13.55
- Olimp Beta-Alanine Carno Rush Mega 80 Tabs€15.65
- Optimum Nutrition Glutamine 630g€41.90
- OstroVit AOL 3000 120 Capsules€17.75
- OstroVit Arginine 210g Orange€11.45
- OstroVit Arginine 3000mg 150 caps€14.60
- OstroVit BCAA + Glutamine 200g Lemon€12.50
- OstroVit BCAA + Glutamine 5500mg 300caps€27.20
- OstroVit Beta-Alanine 200g€11.45
- OstroVit Beta-Alanine 2400mg 150 caps€10.40
- OstroVit Citrulline 4400 - 150 Capsules€16.70
- OstroVit GH Booster Extreme 90caps€13.55
- OstroVit Glutamine 300g Natural€11.45
- OstroVit Glutamine 5000mg 150caps€14.60
- OstroVit HMB 210g Naturaalne€19.85
- OstroVit HMB 2250 150 Caps€15.65
- OstroVit L-Theanine + L-Tyrosine VEGE 90 capsules€12.50
- OstroVit L-Theanine 90 caps€9.35
- OstroVit Leucine 200g€11.45
- OstroVit Lysine 200g€10.40
- OstroVit Ornithine 200g€16.28
- OstroVit Taurine 300g€9.35
- OstroVit Taurine 1500mg 120caps€10.40
- OstroVit Tryptophan 200g€13.55
- OstroVit Tryptophan VEGE 90 caps€9.35
- OstroVit Tyrosine 210g Natural€16.70
- VitalHarmony Arginine 90 Capsules€11.45
- BIOTECHUSA Men's Arginine - 90 TabletsOut of stock
- DY HIT BCAA 4:1:1 + Glutamine 450g PeachOut of stock
- DY The Glutamine Recovery 300gOut of stock
- L-Tyrosine 1000 90 VcapsOut of stock
- MST Beta-Alanine 300gOut of stock
- MST L-Citrulline 240capsOut of stock
- MST L-Glutamine 300g UnflavoredOut of stock
- Mutant L-Glutamine 300gOut of stock
- NOW Foods Arginine 500mg & Citrulline 120capsOut of stock
- NOW L-Lysine 1000mg 100tabsOut of stock
- Olimp Citrulline Malate 200g Cool LemonadeOut of stock
- OstroVit Citrulline 210g NaturalOut of stock
- OstroVit Glycine 200g NaturalOut of stock
Useful Articles
What is tryptophan and how does it affect mood and sleep?
Tryptophan is an essential amino acid the body cannot produce on its own and must obtain from food or supplements. It is the direct precursor of serotonin — the "happiness hormone" — and serotonin is in turn used to synthesize melatonin, which regulates the sleep-wake cycle. Tryptophan supplements are used to improve mood, enhance sleep quality, and relieve anxiety naturally.
Frequently asked questions about tryptophan
Yes, tryptophan is a precursor of serotonin and melatonin, so it supports the body's natural sleep regulation. Studies show that 1-3 g of L-tryptophan before bedtime shortens time to fall asleep and improves sleep quality. Unlike synthetic sleep aids, tryptophan does not cause dependency or morning grogginess. Effects typically appear within 1-2 weeks.
Tryptophan is first converted to 5-HTP in the body and then to serotonin. 5-HTP is one step closer to serotonin, so its effects are faster and doses smaller (50-200 mg vs. 500-2,000 mg). However, tryptophan also participates in other metabolic pathways (niacin production), providing broader benefits. Both should not be taken simultaneously due to serotonin syndrome risk.
For mood support, 500-1,000 mg of L-tryptophan per day is recommended, divided into 2-3 doses. For sleep support, 1,000-2,000 mg 30-60 minutes before bedtime is recommended. Take separately from protein-rich food, as other amino acids compete with tryptophan for absorption. A light carbohydrate-rich snack with tryptophan improves brain uptake.
Tryptophan is generally safe at recommended doses. Some people may experience mild nausea, headache, or drowsiness. Important warning: do not combine tryptophan with SSRI antidepressants, MAO inhibitors, or 5-HTP — this can cause dangerous serotonin syndrome. Consult a doctor if you take mood-affecting medications.