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Train Naked Labs Critical FX Dietary Supplement

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Train Naked Labs Critical FX Dietary Supplement is designed to support energy, focus, and mental clarity. Critical Fx RTD formula contains several ingredients that are known to support cognitive function, such as caffeine, L-theanine, and Alpha GPC. Caffeine is a stimulant that can increase alertness and focus, while L-theanine is an amino acid that is known to promote relaxation without causing drowsiness. Alpha GPC is a compound that is believed to support brain health and improve cognitive function.

Critical FX Pre Workout Drink Benefits

  • Energy & Alertness
  • Focus & Mood
  • Features Multi-Stacked for Hardcore Training and 11,612mg of explosive training power per bottle
  • Gives power, pump, muscle stamina


$42.15 $73.65

20% Off* on first autoship

5% Off* on future orders

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One-time purchase

$52.69 $73.65

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Features of TNL Critical FX Dietary Supplement

  • Energy and Focus: Contains caffeine and L-theanine, which are known to support energy, focus, and mental clarity. This combination can help to improve productivity and reduce fatigue
  • Cognitive Support: Alpha GPC is a compound that is believed to support brain health and improve cognitive function. Critical Fx RTD also contains other nutrients that are important for overall health and wellbeing, such as vitamins B6 and B12, and vitamin C
  • Zero Calories: It is a low-calorie beverage that is sweetened with natural sweeteners, such as stevia and erythritol. This makes it a great alternative to high-calorie energy drinks or sugary sodas

What are the ingredients of Train Naked Labs Critical FX Dietary Supplement?

  • Glycerin – 8000mg (all dosages per bottle): Glycerin serves as a transporter of the active raw ingredient blend, speeding delivery to the body for fast absorption. Glycerin is one of the first energy sources used by the body and is also a fantastic hydrating agent for muscle fiber. A sugar alcohol that does not spike your blood sugar or insulin – Glycerin has a very low GI Rating of 4.
  • Beta Alanine – 4000mg: Possibly the most effective ingredient for sports performance and bodybuilding since Creatine. Beta-Alanine boosts explosive muscular strength and power output, increases muscle mass, boosts muscular anaerobic endurance, increases aerobic endurance, and increases exercise capacity so you can train harder and longer. Truly a great raw material.
  • Betaine (Trimethylglycine) – 1800mg: Betaine is an amino acid that has been shown to have potential benefits for fighting heart disease, improving body composition, and helping promote muscle gain and fat loss because of its abilities to promote protein synthesis in the body.
  • l-Taurine – 1000mg: Increases secretion of nitric oxide, which dilates your blood vessels and improves blood flow and delivery of oxygen to your muscles. Taurine will also enhance mental alertness and mood
  • Caffeine Anhydrous – 380mg: There are many documented studies as to the multitude of benefits of Caffeine to the body. Among them: energy enhancement increasing the body's capability for mental and physical labor, enhanced fat loss, and increased metabolic rate (i.e., thermogenic effect).
  • L-Theanine – 300mg: Able to cross the blood-brain barrier, L-Theanine is known to have psychoactive properties. L-Theanine has been shown to reduce mental and physical stress, and to improve cognitive response and mood in a synergistic manner with caffeine.
  • n-Acetyl-l-Tyrosine – 300mg: 20 times more soluble in the body as L-Tyrosine. Is a precursor to neurotransmitters of dopamine and norepinephrine and has shown to elevate mood, reduce stress, and increase cognitive and physical performance.
  • Beta-Phenylethylamine (Beta PEA) – 200mg: Has the unique ability to increase the activity of the major neurotransmitters and improve your life functions. Is a highly-concentrated neurotransmitter in the limbic system (the brain's emotional center) that increases motivation, physical drive, feelings and social activity.
  • Synephrine HCl – 80mg: Stimulant with similar properties to ephedra. Shown to increase energy expenditure and metabolism, while decreasing appetite. Also assists glucose uptake to the muscle.

Supplement Facts:

Serving Size

6 oz (175 mL)




12 oz (355 mL)
  Amount/Serving %DV Amount Per Bottle (2 Serv)
Calories 16   32
Carbohydrates 4g 1% 8 gr
B3 (Niacin) 50 mg 250% 100 mg
B6 (Pyridoxine) 25 mg 1250% 50 mg
Sodium 10 mg 1% 20 mg
Potassium 50 mg 2% 100 mg
Critical FX Blend 8,030 mg   16,060 mg
Glycerin (99.7% Pure) 4000 mg ** 8000 mg
Beta Alanine 20000 mg ** 4000 mg
Betaine (frimethylglycine) 900 mg ** 1800 mg
I-Taurine 500 mg ** 1000 mg
Caffeine Anhydrous 190 mg ** 380 mg
I-Theanine 150 mg ** 300 mg
N-Acetyl-l-Tyrosine 150 mg ** 300 mg
Beta Phenylethylamine 100 mg ** 200 mg
Synephrine HCI 40 mg ** 80 mg

*Percent of Daily Values based on 2000 calorie diet
**Daily Values not established

Other Ingredients:

  • Filtered Water
  • Phosphoric Acid Citric Acid
  • Natural and Artificial Flavors
  • Sodium Hexa meta phosphate
  • Sodium Benzoate
  • Potassium Sorbate
  • Ma lic Acid
  • Sucra lose
  • Acesutfarrie Potassium no food colors

Frequently Bought Together

How to take CriticalFX - Hardcore Training Formula?

  • Drink up to 1/2 Bottle before and/or during Training and decide your level of tolerance.
  • Do not exceed more than one bottle daily.

Note: Expect a "flushing" of the skin that will dissipate as you train.


  • Not for use by individuals under the age of 18.
  • Do not use it if pregnant or nursing.
  • Do not consume if you have high blood pressure or heart disease.
  • Additionally, consult a physician or licensed qualified health care professional before using the product if you have, or have a family history of thyroid disease, diabetes, depression or other psychiatric conditions, glaucoma, difficulty in urinating, prostate enlargement, or seizure disorder, or if you are using a monomine Oxidase inhibitor (MAOI) or any other dietary supplement, prescription drug, or over the counter drug containing ephedrine, pseudoephedrine, or phenylpropanolamine.
  • Do not exceed recommended serving.
  • Exceeding the recommended serving may cause adverse health effects.
  • Discontinue use and call a physician or licensed qualified health care professional immediately if you experience rapid heartbeat, dizziness, severe headache, shortness of breath, or other similar symptoms.
  • Individuals who are sensitive to the effects of caffeine or other stimulants, or have a medical condition should consult a licensed health care professional before consuming this product.
  • Do not use this product if you are more than 15 pounds overweight.
  • Do not use for weight reduction.
  • The consumer assumes total liability if this product is used in a manner inconsistent with the label guidelines.
  • Keep out of reach of children.

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