Food supplement · Dr. Berg
L-Theanine
Why Dr. Berg l-theanine?
- 0.4 mg zinc per serving
- 4% of the daily value
From the label’s panel and printed marks — not its marketing.
Supplement Facts
Serving size 1 Capsule(s)
Zinc0.4 mg
Copper0.03 mg
Manganese3 mg
L-Theanine200 mg
Proprietary Blend385 mg
Full panel ↓Sold as food, not medicine — no regulator checked that it works
Per serving · 1 Capsule(s)
At a glance
From the label as printed · NIH DSLD
Dietary supplement · Capsule
Per serving0.4 mg zinc
4% of the daily value — our arithmetic on the label’s own numbers
90 servings per container
As a dietary supplement, take 1 capsule, with meals, 3 times per day.
One serving: 1 Capsule(s)
Caution: Do not exceed recommended dose. Do not use if safety seal is damaged or missing.
All warnings ↓No third-party testing mark on the label
Marks like USP Verified mean an independent lab checked that the product contains what the label says.
- Food supplement — claims are the manufacturer’s
- Adult (18 - 50 Years)
Supplement Facts
Supplement Facts
Serving size 1 Capsule(s)
Servings per container 90
| Amount per serving | % DV | |
|---|---|---|
| Zinc (Zinc Amino Acid Chelate) | 0.4 mg | 4% |
| Copper (Copper Amino Acid Chelate) | 0.03 mg | 3% |
| Manganese (Manganese Lactate) | 3 mg | 130% |
| L-Theanine | 200 mg | † |
| Proprietary Blend | 385 mg | † |
| L-Tyrosine | 0 NP | |
| Ashwagandha, Powder | 0 NP | |
| Bovine Adrenal Substance, Desiccated | 0 NP | |
| Nutritional Yeast | 0 NP | |
| Licorice, Powder | 0 NP |
† Daily Value not established.
- Zinc0.4 mg4%
- Copper0.03 mg3%
- Manganese3 mg130%
Other ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate
Transcribed from the label by the NIH Office of Dietary Supplements. What a label says is not independently verified. See the original label
How to take it
- Suggested use: As a dietary supplement, take 1 capsule, with meals, 3 times per day.
The manufacturer’s directions, from the label.
Warnings on the label
- Caution: Do not exceed recommended dose. Do not use if safety seal is damaged or missing.
- Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any dietary supplement.
What no one has checked
Supplements are regulated as food, not as medicine. No regulator has assessed whether this product works, and manufacturing standards vary widely between brands and countries.
Compare with similar products
Details
| Brand | Dr. Berg |
|---|---|
| NIH label ID | 337162 |
| Label recorded | 2025-07-24 |
Source: Dietary Supplement Label Database · NIH Office of Dietary Supplements · retrieved 2026-09-21 · not reviewed by a nutrition professional