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Threshold

Optimum NutritionUpdated April 2026

Product Information

Form
Powder
Servings Per Container
75
Product Type
Other Combinations
DSLD Entry Date
2013-02-25

Target Groups

Adult (18 - 50 Years)

All Ingredients

IngredientAmount% DV
Calories0 {Calories}
Total Carbohydrates0 g0%
Magnesium15 mg4%
Phosphorus70 mg7%
Sodium20 mg1%
Potassium55 mg2%
Beta-Alanine1.6 g
L-Histidine550 mg

† Daily Value not established.

Label Statements

Suggested/Recommended/Usage/Directions

DIRECTIONS: Add 1 scoop of Threshold(TM) to a glass or shaker cup filled with 6-8 oz. of cold water or your favorite beverage. Mix or shake thoroughly for 15-20 seconds or until powder is completely dissolved. SUGGESTED USE: Consume one serving first thing in the morning and a second serving approximately 30 minutes before your workout (or mid-afternoon on non-training days).

Brand IP Statement(s) re: (c), (TM), (SM)

TIPS: The first few times that you use it, Threshold(TM) may cause a tingling sensation on your skin. With continued use, the intensity of the sensation will decrease or disappear. For best results, use Threshold(TM) continuously for at least 8 weeks.

Precautions re: Children

KEEP OUT OF REACH OF CHILDREN.

Formula re: Contains

1.6G BETA ALANINE

General Statements: All Other Content

75 SERVINGS (3 arrows) 1,600 MG MUSCLE FATIGUE FIGHTER†

General: Product/Version Code

07-234-094

Seals/Symbols

CarnoSyn(R) Carnosine Synthesizer

General Statements: All Other Content

Nutritional uses of ß-alanine are licensed from Natural Alternatives International, Inc. under US Patents #5,965,596; 6,172,098 and 6,680,294.

General Statements: All Other Content

THE BIGGER PICTURE OF MUSCLE STAMINA During high-intensity training, glucose and glycogen are broken down for energy. In the process, hydrogen ions (H+) are also produced within the muscles. H+ accumulation causes the muscles to become more acidic and ultimately leads to fatigue.

Formula re: Contains

Packed with Beta-Alanine, Histidine, and Phosphates our Threshold(TM) formula is designed to help boost your intramuscular buffering system so that you can train harder, longer.†

Brand IP Statement(s) re: (c), (TM), (SM)

(C)2007 OPTIMUM NUTRITION, INC.

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.

Seals/Symbols

ON(TM)

General Statements: All Other Content

(2 arrows) UNFLAVORED

Storage

STORE TIGHTLY-CLOSED CONTAINER IN A COOL, DRY PLACE.

Brand IP Statement(s) re: (c), (TM), (SM)

THE BIGGER PICTURE(TM) WWW.OPTIMUMNUTRITION.COM

Precautions re: All Other

CHECK WITH A QUALIFIED HEALTH CARE PROFESSIONAL BEFORE TAKING THIS PRODUCT IF YOU ARE PREGNANT OR NURSING A BABY, UNDER 18 YEARS OF AGE, HAVE ANY KNOWN OR SUSPECTED MEDICAL CONDITIONS, AND/OR IF YOU ARE TAKING ANY PRESCRIPTION OR OTC MEDICATIONS.

Supplement Facts Panel

Supplement Facts
Serving Size 2.7 Gram(s)
Servings Per Container 75
Amount Per Serving% Daily Value*
Calories
0 {Calories}
Total Carbohydrates
0 g0%
Magnesium
15 mg4%
Phosphorus
70 mg7%
Sodium
20 mg1%
Potassium
55 mg2%
Beta-Alanine
1.6 g
L-Histidine
550 mg

* Percent Daily Values are based on a 2,000 calorie diet.

† Daily Value not established.

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