Caffeine & L-Theanine

by Puritan's Pride · capsule · 30 rapid release capsules

On the market (NIH)
UPC 0 25077 00125 5
DSLD label 286366
Serving 1 capsule
30 servings

Caffeine & L-Theanine by Puritan's Pride lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 100 mg of L-theanine and 50 mg of caffeine. Its current label entered the NIH Dietary Supplement Label Database on June 22, 2023.

What is in Caffeine & L-Theanine?

Each row as the label prints it, per serving of 1 capsule. 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).

Caffeine & L-Theanine: Supplement Facts rows against the market (DSLD label 286366, January 2026 release)
Ingredient	Amount	% DV	Among products listing it
L-Theanine	100 mg		47% of 1,602 products listing theanine give more (median 100 mg).
Caffeineas Caffeine Anhydrous	50 mg		91% of 3,358 products listing caffeine give more (median 200 mg).

Source: NIH ODS Dietary Supplement Label Database, label 286366 (entered June 22, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). 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:

91% of the 3,358 products that print an amount of caffeine list more than its 50 mg of caffeine (median 200 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?

6 products list the very same ingredients; the nearest amounts come first.

Caffeine & L-TheanineVali same ingredients
Caffeine + L-TheanineTransform HQ same ingredients
Caffeine 100 mg with L-Theanine 100 mgNutricost same ingredients
Caffeine 100 mg + Theanine 100 mgPrimaForce same ingredients
Caffeine L-Theanine 100/200 mgHard Rhino same ingredients
Caffeine + L-Theanine Capsules 100/200 mgNootropics Depot 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: Directions: For adults, take one (1) capsule daily, preferably with a meal.
Warnings: Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.; Discontinue use and consult your doctor if any adverse reactions occur.; Keep out of reach of children.; Do not use if seal under cap is broken or missing.
Allergens and what it does not contain: No artificial color, flavor or sweetener, no sugar, no starch, no milk, no lactose, no soy, no gluten, no wheat, no yeast, no fish. Sodium free.
Storage: Store at room temperature.

Source: label statements in DSLD label 286366.

What else is on the label?

Other ingredients: Cellulose, Magnesium Stearate, Silica.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): QA Quality Assured.

How many labels does Caffeine & L-Theanine have?

One label is on file, entered on June 22, 2023.

Label 286366 (current) Entered June 22, 2023 · on the market · 30 rapid release capsules · UPC 0 25077 00125 5

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Puritan's Pride, Inc. (distributor), Ronkonkoma, NY, U.S.A.. All Puritan's Pride products.