If you have been tossing and turning at night or feeling on edge during the day, you are not alone. Many people turn to amino acid supplements to support a calm mind and restful sleep. In this guide, we review two popular options from Nutricost: the L-Tryptophan 500mg capsules with BioPerine and the L-Theanine 200mg capsules. Whether you struggle with falling asleep or need daytime relaxation, this article will help you decide which supplement fits your lifestyle.

We have evaluated both products based on ingredient quality, dosage, and user feedback. For more insights on natural sleep aids, check out our nutricost valerian root review for another option.

1
Best Seller

Nutricost L-Tryptophan 500mg

Nutricost
9.7 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
Nutricost L-Tryptophan 500mg capsules with BioPerine provide a high-quality, gluten-free supplement designed to support sleep and mood. The added BioPerine enhances absorption, making it a reliable choice for those seeking a clean, non-GMO option.
Pros & Cons

Pros

  • BioPerine boosts absorption for more effective results
  • High potency 500mg per capsule reduces the need for multiple pills
  • Non-GMO and gluten free suitable for dietary restrictions
  • 120 servings per bottle offers great value
  • Made in a regulated facility ensures product safety

Cons

  • No third-party testing certification mentioned on label
  • May cause drowsiness, so best taken before bedtime
  • Not recommended for use with certain antidepressants without medical advice
Detailed Review

Nutricost L-Tryptophan 500mg with BioPerine is a dietary supplement designed to support natural sleep cycles and mood balance. L-Tryptophan is an essential amino acid that the body converts into serotonin and melatonin, making it a popular choice for those struggling with occasional sleeplessness or stress. This product is especially suited for adults seeking a clean, non-GMO supplement without unnecessary additives.

The standout feature is the inclusion of BioPerine, a patented black pepper extract that enhances nutrient absorption. Each capsule provides 500mg of L-Tryptophan paired with 5mg of BioPerine, ensuring your body gets the most out of each dose. With 120 capsules per bottle, you get a generous 120 day supply if taken as directed, offering excellent value for the price.

In terms of design and build, the capsules are standard size and easy to swallow. The red bottle is compact and fits well on a shelf. The product is manufactured in a GMP compliant, FDA registered facility, which adds a layer of trust regarding quality control. It is also gluten free and non-GMO, appealing to health conscious users.

One potential drawback is the lack of third-party testing verification on the label, which some consumers may look for. Additionally, L-Tryptophan can cause drowsiness, so it is best taken before bed. Those on antidepressants or other medications should consult a healthcare professional before use, as interactions are possible.

Overall, Nutricost L-Tryptophan 500mg with BioPerine is a solid supplement for anyone looking to support sleep and mood naturally. The enhanced absorption and clean ingredient profile make it a reliable choice. While it may not be ideal for everyone, its quality and value are commendable for a budget friendly option.

2
Editor's Pick

Nutricost L-Theanine 200mg Capsules, 30 Count

Nutricost
9.6 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
Nutricost L-Theanine 200mg provides a potent dose of the calming amino acid in simple capsules. Third party tested and non-GMO, it's a trustworthy choice for those seeking stress relief and improved focus.
Pros & Cons

Pros

  • Third party tested for quality assurance
  • Non-GMO and GMP compliant for safety
  • Affordable price point for a premium supplement
  • Simple ingredient formula suitable for most adults
  • Convenient capsule form for easy consumption

Cons

  • Limited to 30 servings per bottle, may require frequent repurchase
  • No customer reviews available yet to gauge real-world effectiveness
  • May not be suitable for individuals sensitive to 200mg L-Theanine
Detailed Review

Nutricost L-Theanine 200mg is a dietary supplement designed to promote calmness and mental clarity. Ideal for individuals dealing with daily stress, anxiety, or trouble sleeping, this amino acid supplement is a popular natural alternative to prescription relaxants.

The standout feature is its third party testing and GMP compliance, ensuring consistent quality. Each capsule delivers 200mg of pure L-Theanine, a dose widely studied for its ability to increase alpha brain waves, leading to relaxed focus without sedation.

The supplement comes in a simple white bottle with 30 capsules. Capsules are standard size and easy to swallow. Nutricost is a reputable brand known for affordable, high-quality supplements. The packaging is minimal but functional.

Potential drawbacks include the small bottle size (only 30 servings) which may require ordering regularly. Additionally, there are no customer reviews yet, making it difficult to assess user satisfaction. Those new to L-Theanine might prefer a lower starting dose.

Overall, Nutricost L-Theanine 200mg offers a reliable and affordable option for those seeking a natural calm aid. With its third party verification and clean ingredients, it is a solid choice for anyone wanting to support relaxation and focus.

Specifications

Servings per Bottle: 30

Dose per Capsule: 200mg L-Theanine

Bottle Dimensions: 1.7 x 1.7 x 3.2 inches

Third Party Tested: Yes

Non-GMO: Yes

GMP Compliant: Yes

3
Limited Time

Nutricost L-Tryptophan 500mg Supplement

Nutricost
9.8 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
Nutricost L-Tryptophan 500mg provides a high-quality amino acid supplement in a convenient 2-bottle pack. With 240 capsules total, it's ideal for those seeking natural sleep and mood support from a trusted, GMP-compliant manufacturer.
Pros & Cons

Pros

  • High purity and quality from a reputable manufacturer
  • Excellent value with two bottles included in one purchase
  • Free from common allergens like gluten, soy, and GMOs
  • Manufactured under strict quality control standards
  • No artificial additives or unnecessary fillers

Cons

  • May cause mild digestive upset in some individuals when taken on an empty stomach
  • Not recommended for use with certain medications without consulting a healthcare provider
  • Results can vary based on individual biochemistry and lifestyle factors
Detailed Review

Nutricost L-Tryptophan 500mg is a high-potency amino acid supplement designed to support sleep, mood, and overall relaxation. Each capsule delivers 500mg of pure L-Tryptophan, a precursor to serotonin and melatonin, making it a popular choice for those struggling with occasional sleeplessness or stress. This pack includes two bottles with 120 capsules each, providing a generous 240-capsule supply for extended use.

The standout quality of this supplement is its commitment to purity and safety. Nutricost ensures the product is non-GMO, gluten free, and soy free, catering to individuals with dietary restrictions or sensitivities. Additionally, the manufacturing process takes place in a GMP compliant, FDA registered facility, which adds a layer of trust and consistency to each batch. Users can expect a reliable product free from unnecessary additives.

In terms of design, the capsules are standard size and easy to swallow. The two-bottle packaging is practical for storage and travel, and the simple label clearly lists dosage and ingredients. While the product lacks a serving scoop or dropper, capsules are straightforward for daily use. The 500mg dose is a common effective amount, though some may prefer to start with a lower dose to assess tolerance.

A potential drawback is that L-Tryptophan can cause mild digestive discomfort, especially when taken without food. It is also important to consult a healthcare professional before use if you are on antidepressants or other medications that affect serotonin levels. As with any supplement, individual results may vary, and consistency is key for noticeable benefits.

Overall, Nutricost L-Tryptophan 500mg offers excellent value and quality for anyone seeking natural sleep and mood support. The combination of high purity, allergen-free formulation, and trusted manufacturing makes it a solid choice. For the price, this two-bottle pack is a cost-effective way to try a well-regarded amino acid supplement.

4
Top Rated

NatureHya GABA 600mg & L-Tryptophan 180mg Sleep

NatureHya
9.9 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
A clean, plant-based sleep support that combines GABA and L-Tryptophan to gently ease you into restful sleep without melatonin or habit-forming ingredients. Ideal for anyone seeking a natural, non-drowsy daytime alternative that supports relaxation and wake-up refreshment.
Pros & Cons

Pros

  • Non-habit forming and melatonin-free, ideal for long-term use without grogginess or dependency.
  • Clean, plant-based formula free from common allergens and synthetic additives.
  • Includes additional wellness ingredients like CoQ10 and hyaluronic acid for added health benefits.
  • High customer rating indicates strong user satisfaction and effectiveness.
  • Easy-to-swallow vegan capsules that fit seamlessly into any evening routine.

Cons

  • May not be potent enough for those with severe sleep disorders who require stronger, fast-acting sleep aids.
  • No added melatonin might be a drawback for individuals who need a more direct sleep-inducing effect.
  • Limited to a 90-count bottle, which may require frequent repurchasing for nightly users.
Detailed Review

NatureHya's GABA 600mg & L-Tryptophan 180mg Sleep Aid Supplement is a thoughtfully crafted, plant-based solution for anyone seeking a gentle, non-habit-forming way to improve sleep quality. Unlike traditional sleep medications that can leave you feeling groggy or dependent, this formula works with your body's natural rhythms to promote relaxation and ease you into a restful night's sleep. It's particularly suited for individuals who prefer a clean, holistic approach to nighttime wellness.

The standout feature of this supplement is its unique blend of GABA and L-Tryptophan, two amino acids known for their calming and sleep-regulating properties. GABA helps quiet the mind, while L-Tryptophan supports the production of serotonin and melatonin, enhancing your natural sleep cycle. What sets this product apart is the addition of hyaluronic acid, glutathione, and CoQ10, which provide antioxidant support and cellular health benefits, making it more than just a basic sleep aid.

In terms of real-world performance, users report falling asleep faster and waking up feeling refreshed without the 'hangover' effect often associated with sleep medications. The formula is non-habit forming and free from melatonin, making it a safe choice for long-term use. The capsules are easy to take and the plant-based ingredients align with a clean-eating lifestyle.

While the product excels in many areas, it's important to note that it may not be potent enough for those with severe sleep disorders or for individuals who require a stronger, more immediate sedative effect. Additionally, the 90-count bottle might not be the most economical option for daily users, as it lasts about three months if taken as directed.

Overall, NatureHya's sleep supplement is a reliable, high-quality choice for anyone looking to enhance their nightly routine naturally. Its gentle yet effective formula, combined with its clean ingredient profile, makes it a top contender in the market. If you value a non-habit-forming, holistic approach to better sleep, this product is definitely worth considering.

5

Superior Labs L-Tryptophan 500mg Supplement

Superior Labs
9.9 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
Superior Labs L-Tryptophan 500mg is a pure, non-GMO supplement designed to support serotonin levels for better sleep and mood. Ideal for those seeking a clean, additive-free amino acid for relaxation and restful sleep.
Pros & Cons

Pros

  • Pure formulation with zero synthetic additives or fillers.
  • High-quality manufacturing with third-party testing.
  • Supports both sleep and mood through serotonin conversion.
  • Non-GMO and vegetarian capsules.
  • Money-back guarantee provides peace of mind.

Cons

  • May take several weeks of consistent use to notice significant changes in sleep or mood.
  • Large capsule size might be difficult for some to swallow.
  • Not recommended for individuals with certain medical conditions or those taking antidepressants without consulting a doctor.
Detailed Review

The Superior Labs L-Tryptophan 500mg supplement is a high-purity amino acid formula designed to support serotonin production. It is ideal for individuals seeking natural sleep support and mood balance without synthetic additives.

What sets this product apart is its absolute purity. Superior Labs guarantees zero synthetic additives, fillers, or heavy metals. This commitment to quality ensures that each capsule delivers only the active ingredient for maximum effectiveness.

The supplement comes in easy-to-swallow vegetarian capsules, packaged in a 120-count bottle. The manufacturing process undergoes rigorous third-party audits to meet the highest industry standards, reflecting the brand's dedication to quality.

While the product is well-formulated, some users may find the 500mg dosage too high for initial use. Additionally, results can vary and may require consistent use over several weeks. As with any supplement, it is advisable to consult a healthcare professional before starting.

Overall, Superior Labs L-Tryptophan is an excellent choice for those looking for a clean, effective sleep and mood support supplement. Its purity and quality assurance make it a trustworthy option in a crowded market.

Buying Guide

Dosage and Potency

When choosing a sleep or relaxation supplement, the amount of active ingredient per serving matters. Nutricost L-Tryptophan delivers 500mg per capsule plus 5mg of BioPerine, a black pepper extract that may enhance absorption. This is a solid dose for supporting serotonin and melatonin production. The L-Theanine 200mg capsule provides a moderate amount of this calming amino acid, often used to reduce stress without drowsiness.

Consider your specific needs: if you want a higher dose for sleep onset, the L-Tryptophan is more potent. For gentle daytime calm, the L-Theanine is a good choice. For more on similar supplements, see our double wood magnesium glycinate review for another sleep-support option.

Purity and Quality Standards

Both Nutricost products are made in a GMP compliant, FDA registered facility. The L-Tryptophan is non-GMO and gluten free, while the L-Theanine is also non-GMO and third-party verified. These certifications give you confidence that you are getting a clean supplement without unnecessary fillers. We always recommend looking for such quality marks when buying amino acids.

For more on purity standards, read our nutricost 5 HTP review which also covers third-party verification.

Servings and Value

The L-Tryptophan bottle contains 120 capsules, providing a 120-day supply if you take one per day. That is excellent long-term value. The L-Theanine comes with 30 capsules, a smaller quantity suitable for trying it out or for occasional use. Think about how often you plan to take the supplement. A larger bottle like the L-Tryptophan is more economical for daily use.

For another high-serving option, consider Double Wood Apigenin, which also offers a generous bottle size.

Intended Use and Timing

L-Tryptophan is best taken on an empty stomach about 30 to 60 minutes before bed to support sleep. L-Theanine can be taken during the day for stress relief or at night to promote relaxation without sedation. Choose based on your schedule. If you want a single product for both purposes, you might combine them, but consult a healthcare professional first.

For more on timing and benefits, see our ashwagandha and magnesium for sleep.

Final Thoughts

Both Nutricost supplements deliver quality ingredients at reasonable prices. If your main goal is improving sleep onset and duration, the Nutricost L-Tryptophan 500mg, 120 Capsules is our top pick with its high dose and added BioPerine for absorption. For daytime calm or a gentle evening unwind without drowsiness, the Nutricost L-Theanine 200mg, 30 Capsules is a convenient option. Whichever you choose, you are getting a reliable, clean supplement from a trusted brand.

Frequently Asked Questions

Can I take Nutricost L-Tryptophan and L-Theanine together?

Yes, many people combine them for enhanced relaxation. L-Tryptophan works on serotonin and melatonin pathways, while L-Theanine promotes alpha brain waves. Start with low doses and monitor how you feel. Always consult your doctor before stacking supplements.

How long does it take for Nutricost L-Tryptophan to work for sleep?

Most users notice improved sleep quality within a few days to a week of consistent use. For best results, take it 30 to 60 minutes before bedtime on an empty stomach. Individual responses vary, so give it at least two weeks to assess.

Is Nutricost L-Tryptophan safe for long-term use?

L-Tryptophan is generally safe when taken as directed. Nutricost’s product is made in a GMP compliant facility and is third-party verified. However, long-term use should be discussed with a healthcare provider, especially if you take antidepressants or have medical conditions.

What is the difference between L-Tryptophan and 5-HTP?

L-Tryptophan is a precursor to 5-HTP, which then converts to serotonin. Some people prefer L-Tryptophan because it is a natural amino acid found in food, while 5-HTP is a more direct step. For more details, see our nutricost 5 HTP review.