Dietary Supplement Label Database

RealFast®

Product Overview

Front photo 1 of the Source Naturals RealFast®
View full size
Label photo 2 of the Source Naturals RealFast®
Label photo 3 of the Source Naturals RealFast®

General Information

Product Name
RealFast®
Brand
Source Naturals Products in this brand
Bar Code
0 21078 02945 8
Net Contents
60 Vegan Capsules
Market Status
On Market
Date entered into DSLD
29 October 2026
DSLD ID
s1159

Product Classification

Product Type
Botanical with Nutrients
Supplement Form
Capsule
Dietary Claim(s) or Use(s)
Structure/Function, All Other
Intended Target Group(s)
Adult (18 - 50 Years), Vegan, Gluten Free, Dairy Free, Egg Free, Soy Free, Wheat Free, Yeast Free

Label Information

Supplement Facts

Daily Value (DV) Target Group(s)
Adults and children 4 or more years of age
Serving Size
2 Capsules
Alternate Serving Size
—
Servings per Container
30
Supplement Facts
Serving Size 2 Capsules
Servings Per Container 30
Amount Per Serving% Daily Value
Total Carbohydrate1 g<1%
Niacin (as as niacinamide)150 mg938%
Magnesium (as as magnesium succinate complex)75 mg18%
Green Tea Leaf Extract (as Yielding 70 mg EGCG & 50 mg caffeine)200 mg†
Turmeric Rhizome Extract (as Yielding 150 mg Curcuminoids)158 mg†
Quercetin150 mg†
Bergamot Fruit Extract100 mg†
Natural trans-Resveratrol (as from Polygonum cuspidatum Root Extract)100 mg†
Asian Ginseng Root Extract50 mg†
Ginger Root Extract50 mg†
L-Phenylalanine50 mg†
Cayenne Fruit5 mg†
* Percent Daily Values (%DV) are based on a 2,000 calorie diet. †Daily Value not established.
† Daily Value not established.

Other ingredients: hydroxypropyl methylcellulose (capsule), magnesium stearate, and silica.

% Daily Values for: Adults and children 4 or more years of age.

Label Statements

Suggested/Recommended/Usage/Directions: 2 capsules daily, 2-4 hours before your first meal.

Precautions re: All Other: WARNING: Contains phenylalanine. Not to be used by phenylketonurics, pregnant or breastfeeding women, or with antidepressant drugs such as MAOI's or SSRI's. If you have chronic high blood pressure consult your health care professional before using this product. Contains no yeast, dairy, egg, gluten, soy, or wheat. Contains no preservatives, or artificial color, flavor or fragrance. Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Storage: STORE IN A COOL, DRY PLACE.

FDA Disclaimer Statement: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Other: Upgrade your intermittent fasting program with REALFAST®. It helps you hack your mornings with energizers like ginseng, B3 (niacin), and green tea, and helps curb cravings with cayenne and L-phenylalanine—so it's easier to fast without getting hangry. Ingredients such as resveratrol, bergamot, turmeric, and quercetin are included to help enhance autophagy—one of the main purposes of intermittent fasting. Autophagy is a process where your cells recycle & repair their own components to run cleaner and leaner. The benefits include cellular & metabolic performance, energy, and healthy aging—because when your cells perform at their peak, so do you. Not only that, but when paired with the Optimal Metabolism Diet Plan™, you are supporting healthy GLP-1 levels for superior weight management.*

Other: SN2946 REV D261-A

Brand Information

Manufactured for: © Source Naturals, Inc., P.O. Box 2118, Santa Cruz, CA 95062

Source: Reverse Age Lab, October 2026

More labels from Source Naturals

Every Source Naturals label ›

Other labels with this ingredient

All 14,062 labels with niacin ›

Labels only: each label is shown as printed on the bottle, with no grades, rankings or advice. A label in this database is not an endorsement of the product. Read the label on the bottle you buy: makers change their formulas. Reverse Age Lab is not affiliated with, or endorsed by, the National Institutes of Health or its Office of Dietary Supplements. The original labels come from the NIH’s public-domain data; the labels since are read by us. Search the Dietary Supplement Label Database.