Knock-Out
by Schiff · tablet or pill · 50 tablets
- On the market (NIH)
- UPC 0 20525 12782 2
- DSLD label 65627
- Serving 1 tablet
Knock-Out by Schiff lists 9 ingredients, 9 with an amount per serving of 1 tablet, such as 0.5 mg of vitamin B6, 200 mg of calcium, 10 mg of magnesium and 3 mg of melatonin. Its current label entered the NIH Dietary Supplement Label Database on October 22, 2016.
What is in Knock-Out?
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 |
|---|---|---|---|
| Vitamin B6as Pyridoxine HydrochlorideVitamin B6 (Form: as Pyridoxine Hydrochloride) | 0.5 mg | 25% | 95% of 15,277 products listing vitamin B6 give more (median 6 mg). |
| Calciumas Calcium CarbonateCalcium (Form: as Calcium Carbonate) | 200 mg | 20% | Higher than 64% of 17,831 products listing calcium (median 115 mg). |
| Magnesiumas Magnesium HydroxideMagnesium (Form: as Magnesium Hydroxide) | 10 mg | 3% | 91% of 14,003 products listing magnesium give more (median 86 mg). |
| Melatonin | 3 mg | 38% of 1,557 products listing melatonin give more (median 3 mg). | |
| Glycine | 40 mg | 87% of 1,078 products listing glycine give more (median 300 mg). | |
| L-Theanine | 50 mg | 79% of 1,602 products listing theanine give more (median 100 mg). | |
| Valerian extract | 100 mg | 64% of 647 products listing valerian give more (median 200 mg). | |
| Valerenic Acids | 0.8 mg | ||
| Gamma-Aminobutyric Acid | 100 mg | 48% of 744 products listing GABA give more (median 100 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 65627 (entered October 22, 2016), 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?
The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:
- 95% of the 15,277 products that print an amount of vitamin B6 list more than its 0.5 mg of vitamin B6 (median 6 mg).
- 91% of the 14,003 products that print an amount of magnesium list more than its 10 mg of magnesium (median 86 mg).
- 79% of the 1,602 products that print an amount of theanine list more than its 50 mg of L-theanine (filed by NIH under theanine) (median 100 mg).
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?
The products whose ingredient lists overlap most with Knock-Out's, rare ingredients counting for more.
- Deep Sleep ComplexEsmond Natural 6 shared, 52% alike
- Melatonin UltraSchiff 6 shared, 51% alike
- Sweet SlumberSchiff 6 shared, 51% alike
- Melatonin Ultra 3 mgSchiff 6 shared, 51% alike
- Sleep WellTishcon Corp. 4 shared, 49% alike
- Sleep-EzeViva Vitamins 7 shared, 47% alike
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
- Directions: For best results, take one (1) tablet at bedtime or as recommended by a health care professional.
- Warnings
- WARNING: Not intended for use by pregnant or lactating women, individuals with autoimmune conditions, depressive disorders, endocrine disorders, serious illness, or other drug use. Seek advice from your health practitioner prior to use if under medical supervision, taking tranquilizers or sedatives or taking more than 10 mg of melatonin per day.
- Do not use before or while operating a motor vehicle or heavy machinery.
- Not to be taken by individuals under the age of 18.
- Keep out of reach of children.
- Allergens and what it does not contain
- GUARANTEED: No added sugar (sucrose, fructose, lactose), salt (sodium chloride), yeast, wheat, gluten or milk. No preservatives, artificial colors or artificial flavors.
- Knock-Out is also drug free.
- Storage
- Store in a cool, dry place with lid tightly closed.
Source: label statements in DSLD label 65627.
What else is on the label?
Other ingredients: Cellulose, Stearic Acid, Croscarmellose Sodium, Silicon Dioxide, Hydroxypropyl Methylcellulose, Magnesium Stearate, Food Glaze, Maltodextrin, Polyethylene Glycol.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Schiff Quality Guarantee.
How many labels does Knock-Out have?
One label is on file, entered on October 22, 2016.
- Label 65627 (current) Entered October 22, 2016 · on the market · 50 tablets · UPC 0 20525 12782 2
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Schiff Nutrition Group, Inc. (distributor), Salt Lake City, UT. All Schiff products.