Huperzine A
by Source Naturals · tablet or pill · 100 mcg
- On the market (NIH)
- UPC 0 21078 02409 5
- DSLD label 639
- Serving 1 tablet
Huperzine A by Source Naturals lists one ingredient: 100 mcg of huperzine A per serving of 1 tablet. Its current label entered the NIH Dietary Supplement Label Database on October 26, 2011.
What is in Huperzine A?
Each row as the label prints it, per serving of 1 tablet. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Huperzine AHuperzine A PlantPart: leaf Genus: Huperzia Species: serrata Note: standardized extract | 100 mcg | 39% of 589 products listing huperzine give more (median 100 mcg). |
Source: NIH ODS Dietary Supplement Label Database, label 639 (entered October 26, 2011), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
6 products list the very same ingredients; the nearest amounts come first.
- Huperzine A 100 mcgSource Naturals same ingredients
- Huperzine A 1%BulkSupplements.com same ingredients
- Huperzine AGNC Herbal Plus Standardized same ingredients
- Advanced Therapeutics Huperzine Rx-BrainNature's Plus same ingredients
- Huperzine A 200 mgSource Naturals same ingredients
- Maximum-Strength Huperzine A 200 mcgSwanson Premium Brand same ingredients
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Suggested Use: 1 tablet daily.
- Warnings
- Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.
- WARNING: Do not use this product if you are pregnant, may become pregnant, or are breastfeeding. Consult with your physician prior to use if you have high blood pressure or heart problems or are currently taking any prescription drugs including anticholinergic drugs, acetylcholinesterase inhibitors, or cholinergic drugs. Discontinue use or reduce dosage and consult your physician if the following symptoms develop: nausea, vomiting, diarrhea, incontinence, or muscle twitches. Do not exceed recommended intake.
- Storage
- STORE IN A COOL, DRY PLACE.
Source: label statements in DSLD label 639.
What else is on the label?
Other ingredients: Microcrystalline Cellulose, Stearic Acid.
How many labels does Huperzine A have?
2 labels are on file under this name since October 26, 2011: other sizes, label designs and reformulations. The current one leads this page.
- Label 295820 Entered August 23, 2023 · off the market July 6, 2022 · 60 tablets · UPC 0 21078 02409 5
- Label 639 (current) Entered October 26, 2011 · on the market · 100 mcg · UPC 0 21078 02409 5
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Source Naturals, Inc. (manufacturer), Santa Cruz, CA. All Source Naturals products.