PlainVitamins

Day Starter

by Source Naturals · tablet or pill · 120 tablets

  • On the market (NIH)
  • UPC 0 21078 02764 5
  • DSLD label 75641
  • Serving 1 tablet

Day Starter by Source Naturals lists 3 ingredients, 3 with an amount per serving of 1 tablet, such as 21 mg of calcium, 200 mg of green tea leaf extract and 200 mg of L-theanine. Its current label entered the NIH Dietary Supplement Label Database on August 22, 2017.

What is in Day Starter?

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).

Day Starter: Supplement Facts rows against the market (DSLD label 75641, January 2026 release)
IngredientAmount% DVAmong products listing it
Calcium21 mg2%Calcium in Day Starter against 17,831 products21 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg21 mg

90% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 42 mg.

Green Tea leaf extractas CaffeineGreen Tea leaf extract (Form: 50% Caffeine) PlantPart: leaf200 mgGreen Tea in Day Starter against 2,595 products200 mg per serving; the middle half of products list 50 mg to 250 mg, the median 100 mg.200 mg

Higher than 63% of 2,595 products listing green tea (median 100 mg). Per day at the most servings: 400 mg.

L-Theanine200 mgTheanine in Day Starter against 1,602 products200 mg per serving; the middle half of products list 90 mg to 200 mg, the median 100 mg.200 mg

Higher than 61% of 1,602 products listing theanine (median 100 mg). Per day at the most servings: 400 mg.

Source: NIH ODS Dietary Supplement Label Database, label 75641 (entered August 22, 2017), 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:

  • 90% of the 17,831 products that print an amount of calcium list more than its 21 mg of calcium (median 115 mg).

The NIH database records 1 to 2 servings 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 Day Starter's, rare ingredients counting for more.

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 1 to 2 times daily with a meal. Do not take before bedtime.
We suggest you start with one tablet but increase to two if the desired effect is not achieved.
Warnings
Caution: For adult use only. Each tablet contains 100 mg of naturally occurring caffeine, which is approximately the amount contained in one cup of coffee. Caffeine can cause nervousness, irritability, sleeplessness or rapid heartbeat.
If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Allergens and what it does not contain
Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 75641.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Dibasic Calcium Phosphate, Hydroxypropyl Cellulose, Magnesium Stearate, modified Cellulose Gum, Silica.

How many labels does Day Starter have?

3 labels are on file under this name since June 23, 2017: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 75641 (current) Entered August 22, 2017 · on the market · 120 tablets · UPC 0 21078 02764 5
  2. Label 75644 Entered June 23, 2017 · on the market · 240 tablets · UPC 0 21078 02765 2
  3. Label 75636 Entered June 23, 2017 · on the market · 60 tablets · UPC 0 21078 02763 8

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. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?