Free Shipping on Orders $40+

Source Naturals L-Tryptophan w/ Coenzyme B-6 Tablets

$22.93

120 tablets

Ease tension, boost mood, and support restful sleep with Source Naturals L-Tryptophan with Coenzyme B-6. This essential amino acid helps promote serotonin production to naturally relax the mind and encourage healthy sleep patterns.*

  • Features L-tryptophan 500mg per serving*
  • Includes coenzyme B-6 for optimal absorption*
  • Supports healthy mood, relaxation, and sleep quality*
  • Trusted as one of the best amino acid supplements for nighttime wellness
  • Gluten-free and non-GMO

Source Naturals L-Tryptophan with Coenzyme B-6


Looking for a gentle, natural way to wind down and recharge? Source Naturals L-Tryptophan with Coenzyme B-6 delivers 500mg of pure L-tryptophan — an essential amino acid known for its role in serotonin production and melatonin synthesis.*


You may have heard of tryptophan as the “chemical in turkey that makes you sleepy,” and it’s true — this amino acid plays a central role in regulating your mood and sleep-wake cycle. With added coenzyme B-6 to support conversion and absorption, this supplement is ideal for anyone seeking natural support for emotional balance, sleep, or nervous system health.*



  • Encourages serotonin and melatonin production*

  • Supports positive mood and emotional resilience*

  • Enhances relaxation and sleep onset*


  • Gentle and non-habit-forming



Why L-Tryptophan Matters


L-tryptophan is part of the amino group — building blocks of protein that serve key biochemical functions in the body. As a precursor to serotonin (the “feel-good” neurotransmitter) and melatonin (the “sleep hormone”), tryptophan helps regulate sleep, mood, and stress responses. The concentrated form in L-tryptophan 500mg capsules offers targeted, predictable results — no turkey required!*



  • May help manage occasional sleeplessness and restlessness*

  • Supports calm without sedating or drowsy effects during the day*


  • Ideal for daily use to maintain emotional and nervous system balance*



The Power of Coenzyme B-6


Pairing L-tryptophan with coenzyme B-6 helps your body effectively metabolize the amino acid and convert it into serotonin and melatonin. Vitamin B-6 acts as a necessary cofactor in this process, making this supplement more bioavailable and efficient than standalone tryptophan products.*



  • Coenzyme B-6 enhances tryptophan-to-serotonin conversion*


  • Supports neurotransmitter balance for mood regulation*


  • Plays a role in nervous system and adrenal function*



FAQs About Source Naturals L-Tryptophan with Coenzyme B-6


Q: Is it safe to take L-tryptophan every day? A: Yes, L-tryptophan 500mg is generally safe for daily use when taken as directed. It’s a naturally occurring amino acid and is non-habit forming. Always consult your healthcare provider before starting any new supplement.*


Q: Who should not take tryptophan? A: Those taking SSRIs, MAO inhibitors, or other mood-related medications should consult a healthcare professional before taking this supplement. Pregnant, nursing individuals, or those with liver or kidney conditions should also seek medical advice before use.*


Q: What are the benefits of L-tryptophan? A: Benefits may include mood support, improved sleep quality, emotional balance, and relaxation. It’s often recommended as one of the best amino acid supplements for nervous system and sleep support.*


Q: Are there any potential side effects associated with taking L-tryptophan? A: L-tryptophan is well tolerated, but mild side effects may include drowsiness, nausea, or headache in sensitive individuals. Start with the recommended dose and speak with your healthcare provider if you experience discomfort.*


Sleep Better and Feel Balanced


Whether you’re seeking deeper sleep, a steady mood, or calm through the chaos, Source Naturals L-Tryptophan with Coenzyme B-6 is a safe and supportive choice. This clean, well-absorbed supplement gives your body the nutrients it needs to restore balance — day and night.*


Need help finding the right amino acid or sleep supplement? Chat with our Certified Wellness Consultants via LiveChat, phone, or email for expert recommendations.

Suggested Use: 1 tablet three times daily, between meals and preferably with fruit juice. To support restful sleep, take an additional 3 tablets before bed.

Cautions: Keep out of the reach of children. Consult a physician before taking this product if you are pregnant, nursing, taking any medications such as SSRI's or MAOI's, or have a medical condition.

Questions? We’ve got answers! Reach out to our support team for help.
Serving Size: 3 Tablets

Servings Per Container: 40

Ingredients:

  • Vitamin B6 (From 13 mg Of Pyridoxal-5'-Phosphate [Coenzymated™])

  • Calcium (As Dibasic Calcium Phosphate)

  • L-Tryptophan (25 mg Niacin Equivalents)

Other Ingredients: Dibasic Calcium Phosphate, Stearic Acid, Modified Cellulose Gum, Magnesium Stearate, Silica