Nutrex Research OutLift Pre-Workout

Label Accuracy

Sugar content was measured at 5.76 g/serving.

Caffeine content was measured at 376.6 mg/serving, 7.6% over its 350 mg label claim.

Creatine content was measured at 3034.65 mg/serving, 1.16% over its 3000 mg label claim.

Acetyl-Tyrosine content was measured at 260.62 mg/serving, 73.75% over its 150 mg label claim.

Beta-Alanine content was measured at 3219.2 mg/serving, 0.6% over its 3200 mg label claim.

Taurine content was measured at 2145.15 mg/serving, 7.26% over its 2000 mg label claim.

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Product Purity

One serving of this product recorded less than 0.1 mcg of total arsenic. Using the assumption that inorganic arsenic comprises 80% of total arsenic, one serving of this product falls below inorganic arsenic’s daily intake limit of 0.1 mcg.

This product recorded less than 0.02 mcg of cadmium, falling below cadmium's 4.1 mcg daily intake limit.

This product recorded 0.017 mcg of lead, falling below lead's 0.5 mcg daily intake limit.

This product recorded 0.049 mcg of mercury, falling below mercury's 0.3 mcg daily intake limit.

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Nutritional Value

In our analysis, this product recorded 5.76 g of added sugar per serving. New World Health Organization (WHO) guidelines propose limiting daily added sugar intake to no more than 10% of total energy intake, with a further reduction to 5% (~25g based on a 2000 calorie daily diet) providing additional benefit.

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Ingredient Safety

The Food and Drug Administration (FDA) has cited that caffeine intake up to 400 mg/day is generally recognized as safe for healthy adults. Two servings of this product would exceed this limit.

This product contains Acesulfame Potassium (Ace K), which is a controversial artificial sweetener linked to a negative influence on taste preference. Pending research is testing hypotheses regarding Ace K's negative effects on cognitive function, prenatal development, and carcinogenicity.

This product contains Sucralose (Splenda), considered a safer artificial sweetener. Sucralose has been suggested to be a trigger of migraines in those who have previously suffered from migraines, but has shown no conclusive carcinogenic, reproductive, or neurological adverse effects in existing clinical research.

Red No. 40 has been been linked to increased incidence of allergy and hypersensitivity. According to the Center for Science in the Public Interest (CSPI), Red No. 40 led to DNA damage and a subsequent increase in the incidence of tumors in animal studies; human toxicity studies, however, are currently lacking.

This product was also tested for 1,3-dimethylamylamine (DMAA), an illegal ingredient touted as a "natural" stimulant. No DMAA content was detected in this product.

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Projected Efficacy

This product contains 376.6 mg of caffeine per serving. Caffeine is a popular stimulant shown to increase energy, decrease fatigue and, according to limited evidence, improve cognitive function. It has been shown to enhance endurance during physical activity in a dose-dependent manner, with significant effects apparent at doses of 2.5 mg/kg of bodyweight (~170 mg for a 150 lb. individual; ~227 mg for a 200 lb. individual).

This product contains 3034.65 mg of creatine (as creatine monohydrate) per serving. Some evidence suggests that creatine shows greater efficacy when taken as a “loading” dose (20 g/day as 4-5 separate doses) for 5 days, followed by a “maintenance dose” of 2 g/day. Evidence of benefit is strongest in younger populations and in those who are not highly trained, particularly for short-term, high-intensity exercise.

This product contains 260.62 mg of acetyl-tyrosine per serving. L-tyrosine supplementation is typically used to maintain neurological performance during activities requiring moderate to long-term mental exertion. Doses of 100 mg/kg of bodyweight (~7 g for a 150 lb. individual; ~9 g for a 200 lb. individual) taken 60 minutes prior to physical activity have shown efficacy in human studies. N-Acetyl-L-Tyrosine (NALT) is a more soluble form of the amino acid; limited evidence indicates that it may be a viable alternative to L-tyrosine.

This product contains 3219.2 mg of beta-alanine per serving. Beta-Alanine supplementation has been shown to enhance endurance via carnosine (its active metabolite) by buffering acid accumulation in metabolically active muscle cells. Doses of 4 g/daily (taken as 2 g doses twice daily) have shown efficacy in human clinical study. Large, acute doses of beta-alanine have resulted in parasthesia; studies have shown that extended-release formulations or smaller individual doses (~1 g) circumvent this issue.

This product contains 2145.15 mg of taurine per serving. Taurine is a non-essential amino acid that plays an essential metabolic role, primarily in stabilizing electrically-active tissues, such as the brain and heart. It is suggested to have an excitatory neurological effect and has been shown to reduce blood pressure when taken in combination with caffeine and glucuronolactone; however, the effect of taurine alone is inconclusive and warrants further research. Doses showing efficacy in clinical trials have ranged from 500 - 2000 mg/daily.

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