Skip to product information
1 of 12

Source Naturals L-Tryptophan, for Mood, Relaxation, and S...

Source Naturals L-Tryptophan, for Mood, Relaxation, and S...

Regular price £36.94 GBP
Sale price £36.94 GBP Regular price
Save % Sold out

Carefully selected from trusted wellness brands

Free UK delivery

Secure checkout

Source Naturals L-Tryptophan, for Mood, Relaxation, and Sleep*, 500mg - 120 Capsules

Regular price £36.94
Sale price £36.94 Regular price
Save % Sold out
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Tracked UK delivery. Estimated arrival between - and -.

Product Overview

L-Tryptophan is an essential amino acid that serves as a precursor to serotonin, a neurotransmitter that regulates mood, appetite, and sleep. Source Naturals L-Tryptophan provides 500 mg of pure L-Tryptophan per capsule to help support a balanced mood, relaxation, and restful sleep.* Whether you're looking to improve your sleep quality or maintain a positive outlook, this supplement can be a valuable addition to your daily routine.

Key Features and Benefits

  • Mood Support: L-Tryptophan is converted to serotonin, which helps promote a sense of well-being and emotional balance.*
  • Relaxation: By supporting serotonin levels, L-Tryptophan can help ease occasional stress and promote relaxation.*
  • Sleep Aid: Serotonin is a precursor to melatonin, the sleep hormone. Taking L-Tryptophan before bed may help you fall asleep faster and enjoy deeper sleep.*
  • High Potency: Each capsule delivers 500 mg of L-Tryptophan, providing effective support in a convenient dose.
  • Pure Ingredients: Free from common allergens and unnecessary additives, this supplement is suitable for many dietary needs.

How to Use

As a dietary supplement, take 1 to 3 capsules daily, preferably on an empty stomach at bedtime, or as recommended by your healthcare professional. For best results, take with a small amount of fruit juice or carbohydrate to enhance absorption. Do not exceed recommended dosage.

Who It Is For

This product is ideal for adults seeking natural support for mood, relaxation, and sleep. It is particularly beneficial for those who experience occasional sleeplessness, stress, or mood fluctuations. Always consult with a healthcare provider before starting any new supplement, especially if you are pregnant, nursing, taking medication, or have a medical condition.

Why Choose Source Naturals L-Tryptophan?

Source Naturals is a trusted brand known for high-quality nutritional supplements. Their L-Tryptophan is manufactured under strict quality controls to ensure purity and potency. Unlike some sleep aids that cause drowsiness or dependence, L-Tryptophan works with your body's natural processes to promote restful sleep and a calm mind. With 120 capsules per bottle, this product offers a generous supply for long-term use.

Technical Details

  • Form: Capsule
  • Strength: 500 mg per capsule
  • Count: 120 capsules per bottle
  • Dimensions: 2.51 x 2.51 x 4.6 inches
  • Weight: 0.1 pounds
  • No Artificial Colors, Flavors, or Preservatives

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Delivery in the United Kingdom

Orders are prepared with clear UK delivery expectations from the product page through dispatch. Delivery estimates are shown before checkout where available, and tracking details are sent after the order leaves fulfilment so customers can follow the parcel and plan around the expected arrival window.

Returns and support

NutriSentra offers straightforward post-purchase support with a clear returns process. Please check the store returns policy before sending an item back, as final eligibility may depend on product condition, packaging integrity and whether the return request is started within the stated return window.

How to choose

Use the product description, ingredient list, serving information and available variants to compare supplement options. Always check the full ingredient list, directions for use and any allergen information on the product packaging before taking any food supplement.

Ingredients and important information

Ingredient lists and formulations may vary by batch or supplier. Always check the product packaging for the most up-to-date information. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Do not exceed the recommended daily intake. If you are pregnant, nursing, taking medication or have a medical condition, consult your healthcare professional before use.

View full details
  • Tracked UK delivery

    Clear delivery messaging for United Kingdom shoppers.

  • Secure checkout

    Secure checkout.

  • Clear returns

    Returns information is written plainly before purchase.

  • Trusted brands

    Carefully selected supplements from established wellness brands.

Supplement guide

Source Naturals L-Tryptophan, for Mood, Relaxation, and Sleep*, 500mg - 120 Capsules at NutriSentra

Product OverviewL-Tryptophan is an essential amino acid that serves as a precursor to serotonin, a neurotransmitter that regulates mood, appetite, and sleep. Source Naturals L-Tryptophan provides 500 mg of pure L-Tryp...

Category Food Supplement
Delivery area United Kingdom
Checkout Secure checkout
120 capsules500mgamino acidl-tryptophanmood supportrelaxationsleep supplementssource naturals

How to choose if this supplement fits your routine

Read the ingredient list, check the serving size and directions for use. Consider the supplement form (tablet, capsule, liquid) and whether it suits your dietary requirements. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

What NutriSentra shows before checkout

Every product page displays price, availability, variant choices, ingredient information, directions for use, allergen details, UK delivery expectations and secure checkout — so you can make an informed decision quickly.

Questions about Source Naturals L-Tryptophan, for Mood, Relaxation, and Sleep*, 500mg - 120 Capsules

Is Source Naturals L-Tryptophan, for Mood, Relaxation, and Sleep*, 500mg - 120 Capsules available for UK customers?

Yes. This product is currently available on NutriSentra with UK delivery.

How should I compare this with similar supplements?

Compare the active ingredients, serving size, number of servings per container, supplement form, brand reputation and price per serving. Check allergen information if relevant to your dietary needs.

Where can I find delivery and returns information?

Delivery information is shown near the add to basket area. Returns guidance is available on the product page and full terms are covered in the store returns policy.

Supplement shopping with clarity

NutriSentra product pages display ingredients, directions, allergen details and delivery information clearly — so you can compare supplements and make informed choices quickly.