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Douglas Laboratories · Other Combinations supplement

5-HTP Plus Formula

7 ingredients on file in the NIH Dietary Supplement Label Database. Off-market, label data preserved for reference.

7
Ingredients
5
Nutrient categories
Top 58%
By ingredient count

5-HTP Plus Formula is a other combinations supplement by Douglas Laboratories in capsule form, listing 7 ingredients in the NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. Currently listed as off-market (no longer available for purchase, but label data is preserved). Daily Value percentages shown below are based on FDA reference daily intake amounts for adults.

Product Details

Form
Capsule
Database Entry Date
2011-12-23
Ingredients
7

Supplement Facts (7 Ingredients)

Ingredient Group Amount % DV
L-5-Hydroxytryptophan 5-HTP Not disclosed on label No DV
Pyridoxal 5-Phosphate Vitamin B6 Not disclosed on label No DV
Proprietary Blend Proprietary Blend (Amino Acid/Protein) Not disclosed on label No DV
L-Tyrosine Tyrosine Not disclosed on label No DV
L-Glutamine Glutamine Not disclosed on label No DV
Cellulose Cellulose Not disclosed on label No DV
Silica Silicon Not disclosed on label No DV

How does 5-HTP Plus Formula compare?

Ingredients listed on each label, against the other combinations category average of 21.8. Data from the NIH DSLD.

5-HTP Plus Formula7
1,000 mg Vitamin C Acai Berry34
Other Combinations average21.8

5-HTP Plus Formula lists 27 ingredients fewer than 1,000 mg Vitamin C Acai Berry. That is 15 below the other combinations average.

What the Label Data Shows

5-HTP Plus Formula is cataloged in the NIH Dietary Supplement Label Database (DSLD) as a other combinations supplement built from 7 ingredients from Douglas Laboratories, sold in capsule form. These ingredients span 5 nutrient categories, amino acid, vitamin, blend, fiber, and 1 more, reflecting a multi-component formula rather than a single-nutrient product.

Across a broader 7-ingredient formula, 7 of 7 carry no FDA reference-intake value, typical for a formula this size: larger blends tend to pull in botanicals, amino acids, and specialty compounds without an assigned Daily Value. Breadth like this isn't a red flag by itself.

Market status matters for supplement research. This product is currently listed as off-market in the DSLD, with its label first entered into the database on 2011-12-23. An off-market listing means production and distribution under this label have stopped, but the DSLD does not delete the entry, it stays on file for historical reference and formulation-history tracking.

About the DSLD database

The DSLD is a label database, not an FDA approval list, under the 1994 DSHEA framework, dietary supplements do not require pre-market approval, and label information reflects what manufacturers self-declare rather than independent laboratory verification. This page presents factual label data for reference only and is not medical advice; consult a licensed healthcare provider before making decisions about any supplement.

Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD) Supplement label data for 5-HTP Plus Formula: ingredients, % Daily Value, market status, brand · 2026 DSLD captures manufacturer-self-declared label information; the NIH does not verify accuracy or evaluate safety/efficacy. Dietary supplements are regulated under DSHEA 1994, no pre-market FDA approval is required.

Ingredient Breakdown by Category

amino acid
3
L-5-Hydroxytryptophan, L-Tyrosine, L-Glutamine
vitamin
1
Pyridoxal 5-Phosphate
blend
1
Proprietary Blend
fiber
1
Cellulose
mineral
1
Silica

Daily Value Coverage

0
Above 100% DV
0
Below 100% DV
7
No DV Established

Frequently Asked Questions

What ingredients are in 5-HTP Plus Formula?
5-HTP Plus Formula contains 7 ingredients. Ingredients span 5 categories: amino acid, vitamin, blend, fiber, mineral.
Who manufactures 5-HTP Plus Formula?
5-HTP Plus Formula is was manufactured by Douglas Laboratories. It is classified as a Other Combinations supplement in capsule form.
Is 5-HTP Plus Formula still available for purchase?
According to the NIH DSLD database, 5-HTP Plus Formula is listed as off-market and may no longer be available for purchase.
What is the serving size of 5-HTP Plus Formula?
The serving size is not specified.
What type of supplement is 5-HTP Plus Formula?
5-HTP Plus Formula is classified as a "Other Combinations" supplement in the NIH database. This category includes products primarily composed of other combinations ingredients. The NIH DSLD tracks 9 supplement categories: Vitamin, Mineral, Botanical, Amino Acid & Protein, Non-Nutrient, Fat & Fatty Acid, Multi-Vitamin & Mineral, Botanical with Nutrients, and Other Combinations.
Data Sources & Methodology

Data as of 2025. Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD).

Supplement label data sourced from the Source: NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. The DSLD contains label information from dietary supplement products marketed in the United States.

Daily Value (DV) percentages are based on Source: FDA 21 CFR 101.9 Reference Daily Intake (RDI) values for adults. Products marked "Off Market" may no longer be available for purchase but their label data remains in the database for reference.

Disclaimer, Not Medical Advice

Label data from the Source: NIH Dietary Supplement Label Database (DSLD). This information is for educational and reference purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting, stopping, or combining any dietary supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.

Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. This page draws directly on the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.