Other ingredients
Hypromellose (Cellulose); Rice Flour; Ascorbyl Palmitate; Stearic Acid
Image: NIH Office of Dietary Supplements, Dietary Supplement Label Database — No separate image reuse license stated
Protocol For Life Balance
L-Tryptophan 500 mg
Capsule
Serving size1 Veg Capsule(s)
Servings per containerNot listed
Package120 Veg Capsule(s)
Data retrievedJul 28, 2026
Supplement Facts
Serving size 1 Veg Capsule(s)
L-Tryptophan1 gDV not established
Label directions
Suggested usage: Take 1-2 capsules twice daily on an empty stomach; with final dose at bedtime; or as directed by your healthcare practitioner.
Label warnings
Cautions/interactions: Tryptophan supplements may interact with CNS depressants antidepressants (SSRIs MAOIs) and other serotonergic agents such as St. John's Wort and 5-HTP Consult your healthcare practitioner if you are taking medications or herbs are pregnant/nursing or if you have liver impairment. May cause drowsiness. Do not use with alcoholic beverages or while operating heavy machinery. Not manufactured with wheat gluten soy milk egg fish. shellfish tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Identity and label version
NIH label record337792
Entered into NIH DSLDAug 22, 2025
UPC / GTIN00707359101678
Manufacturer / distributor on labelProtocol For Life Balance
Market statusOn market in the source data
“Entered into NIH DSLD” is the database entry date for this label record. It is not a manufacturer launch date or a label effective date.
NIH label history (2)
Current labelNIH record 337792Entered Aug 22, 2025
L-Tryptophan1 g
Label warning: Cautions/interactions: Tryptophan supplements may interact with CNS depressants antidepressants (SSRIs MAOIs) and other serotonergic agents such as St. John's Wort and 5-HTP Consult your healthcare practitioner if you are taking medications or herbs are pregnant/nursing or if you have liver impairment. May cause drowsiness. Do not use with alcoholic beverages or while operating heavy machinery. Not manufactured with wheat gluten soy milk egg fish. shellfish tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Earlier labelNIH record 77359Entered Dec 22, 2017
L-Tryptophan1 g
Label warning: Cautions/Interactions: Tryptophan supplements may interact with CNS depressants antidepressants (SSRIs MAOIs) and other serotonergic agents such as St. John's Wort and 5-HTP. Consult your healthcare practitioner if you are taking medications or herbs are pregnant/nursing or if you have liver impairment. May cause drowsiness. Do not use with alcoholic beverages or while operating heavy machinery. Not manufactured with wheat gluten soy milk egg fish shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Sources and traceability
- NIH Dietary Supplement Label DatabaseData retrieved Jul 28, 2026Open source ↗
More from Protocol For Life Balance
Data comes from product labels or official public sources. It does not mean Safmira, NIH, or FDA approves, certifies, or recommends this product. Label amounts are not laboratory measurements.