NOW Foods L-Tryptophan is a dietary supplement containing L-Tryptophan, an essential amino acid that the body cannot produce naturally and must obtain through food or dietary supplements.
The body uses L-Tryptophan to produce Serotonin, a neurotransmitter involved in mood regulation. It also contributes to the production of Melatonin, a hormone that helps regulate the sleep-wake cycle.
Each vegetarian capsule contains 500 mg of L-Tryptophan.
Indications
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Supports relaxation and a sense of calm.
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Helps maintain a balanced mood.
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Supports the body’s natural production of serotonin.
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Contributes to regulating the sleep-wake cycle through its role in melatonin production.
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May help support sleep quality in some individuals.
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Provides an additional source of the essential amino acid L-Tryptophan.
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Supports protein synthesis and normal physiological functions.
Important: Clinical evidence supporting the effectiveness of L-Tryptophan supplements for improving sleep and mood remains limited. It is not an approved treatment for insomnia, depression, or anxiety disorders.
Ingredients and Strength
| Ingredient | Amount per Capsule |
|---|---|
| L-Tryptophan | 500 mg |
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Capsule Count: 60 vegetarian capsules.
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Supplement Type: Amino Acid Dietary Supplement.
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Dosage Form: Vegetarian Capsules (Veg Capsules).
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Servings per Container: Depends on the daily dosage.
Dosage and Administration
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Manufacturer’s recommended dosage: 1–2 capsules, taken 2–3 times daily on an empty stomach.
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Preferably take the last dose before bedtime.
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Swallow the capsules with an adequate amount of water or juice.
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Follow the dosage instructions on the product packaging and do not exceed the recommended amount without consulting a healthcare professional.
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Each bottle contains 60 capsules, providing approximately 10–30 days of supplementation when taking 2–6 capsules daily.
Warnings and Precautions
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Intended for adults only.
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Do not combine with medications that increase serotonin levels without medical approval, including SSRI and SNRI antidepressants, MAO inhibitors, and certain migraine medications.
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Combining L-Tryptophan with serotonergic medications may cause serotonin syndrome, a potentially serious condition.
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Consult a healthcare professional before use if taking sedatives or sleeping medications.
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May cause drowsiness. Avoid driving or operating machinery if you experience sleepiness or reduced alertness.
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Not recommended during pregnancy or breastfeeding without medical supervision.
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Consult a physician if you have liver disease, kidney disease, or other chronic medical conditions.
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Avoid use if you are allergic to any of the product’s ingredients.
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Store in a cool, dry place out of reach of children.
Possible Side Effects
Some individuals may experience the following side effects:
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Drowsiness and fatigue.
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Dizziness.
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Nausea.
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Stomach discomfort.
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Bloating or abdominal discomfort.
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Headache.
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Dry mouth.
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Reduced concentration in some individuals.
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Rare allergic reactions to one or more ingredients.
Serious Side Effects Requiring Immediate Medical Attention:
Serotonin syndrome may occur when L-Tryptophan is combined with medications or supplements that increase serotonin activity. Symptoms may include confusion, excessive sweating, high body temperature, rapid heartbeat, tremors, and muscle rigidity.
Note: NOW Foods L-Tryptophan 500 mg is a dietary supplement intended to support relaxation, normal mood balance, and healthy sleep function. It is not a substitute for medical treatment for insomnia, depression, or anxiety disorders. Consulting a healthcare professional before use is recommended, especially for individuals taking antidepressants, sleeping medications, or other medications affecting the nervous system.



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