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NOW Foods NOW L-Tryptophan 500mg
SPECIMEN #NOW-L-TR
AMINO_ACIDNOW Foods

NOW L-Tryptophan 500mg

Sleep support, mood enhancement, relaxation.. The product provides 1000mg of free-form L-Tryptophan. This is an adequate dose for sleep and mild mood support. It's a simple, single-ingredient product.

8.0/10
EXCELLENT

This is a simple, adequately dosed L-Tryptophan product for general use.

1 ingredientCapsules30 servings
We'd recommend this
Evidence
8.0
Dosing
7.0
SynergyN/A (single ingredient)
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Whenevening

L-Tryptophan converts to serotonin and then melatonin, promoting relaxation and sleep.

Foodempty stomach

Taking L-Tryptophan on an empty stomach improves absorption and reduces competition with other amino acids.

SafetySome cautions

Consult a doctor if you take antidepressants, sedatives, or have underlying medical conditions.

ResearchStrong evidence

Extensive research supports L-Tryptophan's role in sleep and mood.

What We Like

  • Adequate dose of L-Tryptophan
  • Free-form for good absorption
  • Simple and straightforward product

Watch Out For

  • Only one active ingredient
  • Dose might be low for some mood support needs

What We Analyzed

NOW L-Tryptophan 500mg Supplement Facts

Verified Supplement Facts

Every dose checked against clinical research

We analyzed the actual supplement facts panel for this product. Every ingredient dose below was cross-referenced with published clinical trials to determine if it matches what studies actually use.

4 ingredients analyzed

Source: Official product page

Ingredient Breakdown

Clinical Adequate Underdosed Overdosed|Bar = % of clinical dose
IngredientDoseStatusvs. Clinical
L-Tryptophan8.0

Free-Form

1000 mgOVERDOSED
667%
1000 mg

of 150mg

OVERDOSED
667%
In our database (click to learn more) Not yet reviewed
Other Ingredients(inactive)

Cellulose (capsule), Cellulose Powder, Stearic Acid (vegetable source)

Our Analysis

Best For

Individuals seeking sleep supportPeople looking for mild mood enhancementThose wanting to support serotonin production

Skip This If

Pregnant or nursing womenIndividuals on SSRIs or other psychiatric medications without doctor's approvalPeople with liver or kidney disease

Time to Feel

1-2 weeks

Value

GOOD

How to take: Can be used consistently, but take breaks if effects diminish or for long-term use.

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