The Ingredient Library
The primary "energy currency" molecule of every living cell.
The primary "energy currency" molecule of every living cell.
Oral supplementation is intended to increase blood flow and excitability of muscle tissue to improve power output.
You have heart rhythm issues or are taking certain heart medications.
8/10— While incredibly effective when the 400 mg threshold is met, its performance benefits are highly dosedependent and may be negligible at significantly lower amounts.
A perennial herb used in traditional Ayurvedic medicine as a "medhya rasayana" (brain tonic).
A perennial herb used in traditional Ayurvedic medicine as a "medhya rasayana" (brain tonic).
It supports the repair of damaged neurons and improves the speed of visual information processing and memory recall.
You have a sensitive stomach, as it is known to cause nausea or digestive upset if taken on an empty stomach.
9/10— One of the most wellvalidated herbal nootropics for long-term memory, though it typically takes 8–12 weeks of daily use to reach full effect.
A water-soluble vitamin that the body uses to turn food into energy.
A water-soluble vitamin that the body uses to turn food into energy.
It supports the nervous system, digestive system, and skin health. For athletes, it is crucial for converting carbohydrates, fats, and proteins into fuel during intense physical activity.
You have a liver condition, peptic ulcers, or very low blood pressure. It can also cause a "niacin flush" (redness, warmth, and itching) in doses above 35 mg.
8/10— Highly effective for energy metabolism and cardiovascular support, though excess intake beyond daily needs doesn't necessarily improve performance in healthy individuals.
An essential nutrient involved in more than 100 chemical reactions in the body, primarily related to metabolism.
An essential nutrient involved in more than 100 chemical reactions in the body, primarily related to metabolism.
It is vital for brain development, immune function, and the production of neurotransmitters like serotonin and dopamine. For athletes, it helps synthesize hemoglobin to carry oxygen to muscles and aids in muscle repair.
You are taking high doses for a long period; excessive intake (typically over 50 mg daily) can lead to peripheral neuropathy, characterized by tingling or numbness in the hands and feet.
9/10— Extremely wellsupported for metabolic health and neurotransmitter synthesis, though caution is required with high-dose supplements.
A water-soluble B-vitamin that acts as a coenzyme for the metabolism of fats, proteins, and carbohydrates.
A water-soluble B-vitamin that acts as a coenzyme for the metabolism of fats, proteins, and carbohydrates.
Included in the Hydration line to support energy metabolism at a cellular level. It is also well-known for supporting the health of hair, skin, and nails.
The daily Adequate Intake (AI) is 30 mcg for adults.
Generally safe, but high doses can interfere with certain lab tests (like thyroid or heart attack markers). Always inform your doctor if taking Biotin before blood work.
8/10— Critical for basic energy metabolism; essential for those with a deficiency, though "extra" biotin doesn't necessarily provide a performance boost.
A water-soluble vitamin mainly found in animal products that is essential for nerve cell health and DNA synthesis.
A water-soluble vitamin mainly found in animal products that is essential for nerve cell health and DNA synthesis.
It is critical for the formation of healthy red blood cells, which prevents megaloblastic anemia (a condition that causes severe fatigue and weakness).
You have a known sensitivity to cobalt, as it is a component of the B12 molecule.
10/10— Absolutely essential for energy and neurological function; however, there is no proof that extra B12 boosts energy in people who are not already deficient.
A concentrated, dehydrated form of caffeine that acts as a powerful central nervous system stimulant.
A concentrated, dehydrated form of caffeine that acts as a powerful central nervous system stimulant.
It rapidly increases alertness, energy, and fat oxidation while reducing the perception of effort during exercise.
You are sensitive to stimulants, have a heart condition, or suffer from severe anxiety or insomnia.
10/10— One of the most consistently proven ergogenic aids for both mental and physical performance in existence.
An essential nutrient that is a precursor to acetylcholine, a key neurotransmitter for muscle control and memory.
An essential nutrient that is a precursor to acetylcholine, a key neurotransmitter for muscle control and memory.
It supports cognitive "focus," memory, and the mind-muscle connection, helping to prevent the fatigue-related decline in choline levels during long-duration exercise.
You have a history of trimethylaminuria (fish odor syndrome).
8/10— It is a highly reliable cognitive support ingredient, though its effects are often more "subtle" and protective rather than providing a sharp "kick" like caffeine.
A premium, patented form of Citicoline (also known as CDP-Choline), a naturally occurring nutrient found in every cell of the body that provides both choline and cytidine (which converts to uridine).
A premium, patented form of Citicoline (also known as CDP-Choline), a naturally occurring nutrient found in every cell of the body that provides both choline and cytidine (which converts to uridine).
It is a "brain-energy" booster. Clinical research shows it increases brain energy (ATP) by 13.6% and helps repair the structural phospholipids in brain cell membranes. Unlike simple stimulants, it provides steady mental energy, sharpens focus, and improves the mind-muscle connection without jitters or a crash.
Research in healthy adults suggests an effective range of 250 mg to 500 mg daily for measurable improvements in focus, memory, and attention.
You are taking medications for Parkinson's disease (like Levodopa) or Alzheimer's (like Meclofenoxate), as it may interfere with their effectiveness. Safety during pregnancy or breastfeeding is not yet established, so it should be avoided in those cases.
9/10— It is the most extensively researched form of Citicoline. It is backed by numerous human clinical trials showing it effectively supports cognitive performance, longterm brain health, and even visual function.
The most bioavailable form of Vitamin D, which the body naturally produces when skin is exposed to sunlight.
The most bioavailable form of Vitamin D, which the body naturally produces when skin is exposed to sunlight.
It is essential for bone density, immune function, and muscle protein synthesis. For athletes, optimal Vitamin D levels are linked to improved power output and reduced risk of stress fractures.
You have hypercalcemia (too much calcium in your blood) or kidney stones. Excessive long-term intake (over 10,000 IU daily) can lead to toxicity.
10/10— Crucial for overall health and athletic longevity. It is one of the few vitamins where supplementation is almost universally beneficial for those living in northern climates.
A naturally occurring metabolite formed in the liver from the metabolism of glucose.
A naturally occurring metabolite formed in the liver from the metabolism of glucose.
It is used in performance supplements to potentially improve mental alertness, reaction time, and aerobic endurance.
You have kidney issues, though it is generally considered safe at standard supplemental levels.
5/10— While it is a staple in the energy category, there is limited independent research proving it significantly boosts performance outside of its combination with caffeine.
The smallest and simplest amino acid, serving as a building block for proteins and a neurotransmitter.
The smallest and simplest amino acid, serving as a building block for proteins and a neurotransmitter.
A key addition to Energy 2.0. It helps protect against muscle wasting, supports the production of glutathione (a master antioxidant), and has been shown to improve sleep quality and cognitive recovery.
Doses of 3g to 5g before bed are used for sleep; smaller doses are used in energy formulas to support cellular health.
Generally very safe; however, those on clozapine (an antipsychotic) should consult a doctor as it may reduce the drug's effectiveness.
7/10— Strong evidence for metabolic and neurological health, though its acute "energy" benefits are more supportive than direct.
A natural compound extracted from toothed clubmoss (Huperzia serrata)
A natural compound extracted from toothed clubmoss (Huperzia serrata)
It is a potent acetylcholinesterase inhibitor, meaning it stops the breakdown of acetylcholine (the "learning" neurotransmitter), leading to sharper focus and better memory retention.
You have a slow heart rate (bradycardia), epilepsy, asthma, or are taking "drying" (anticholinergic) medications.
8/10— Very strong evidence for acute cognitive enhancement, though it has a long halflife and may require "cycling" (taking breaks) to maintain effectiveness.
The most abundant amino acid in the human body, primarily found in muscle tissue.
The most abundant amino acid in the human body, primarily found in muscle tissue.
It plays a key role in gut health and immune support. While often marketed for muscle growth, its primary benefit for athletes is helping the body recover from the stress of overtraining.
Clinical doses for gut health and recovery range from 5g to 20g (5,000 mg–20,000 mg) daily.
You have liver or kidney disease or are sensitive to MSG (monosodium glutamate).
6/10— Excellent for "internal" health (gut and immunity), but research shows it has little to no direct effect on muscle mass or strength in healthy, wellfed individuals.
A non-protein amino acid primarily found in green and black tea leaves.
A non-protein amino acid primarily found in green and black tea leaves.
It promotes relaxation without drowsiness and is frequently paired with caffeine to "smooth out" the stimulant's effects, reducing jitters and the "crash" while enhancing focus.
You are taking medication for high blood pressure or stimulants, as it may interact with their effectiveness.
10/10— Extensively studied and universally recognized as one of the most effective compounds for smoothing out the effects of stimulants and improving focus.
A non-essential amino acid that serves as a precursor to key neurotransmitters like dopamine and adrenaline.
A non-essential amino acid that serves as a precursor to key neurotransmitters like dopamine and adrenaline.
It helps maintain cognitive performance, focus, and alertness, particularly during stressful or physically demanding situations.
You have hyperthyroidism (Graves' disease) or are taking MAO inhibitors.
8/10— Very effective for cognitive preservation under stress, though it does not necessarily "boost" brainpower in a relaxed state.
A combination of the amino acid L-Citrulline and malic acid.
A combination of the amino acid L-Citrulline and malic acid.
It increases nitric oxide production, which improves blood flow to muscles, reduces fatigue, and enhances endurance.
You have low blood pressure or are taking nitrates for heart conditions.
9/10— It is one of the most wellresearched and reliable ingredients for improving "muscle pump," reducing soreness, and increasing training volume, provided it is consumed at the proper clinical threshold.
A tropical legume that contains high concentrations of L-Dopa, a direct precursor to the neurotransmitter dopamine.
A tropical legume that contains high concentrations of L-Dopa, a direct precursor to the neurotransmitter dopamine.
It is used to support mood, motivation, and mental clarity by increasing dopamine levels in the brain.
You are taking MAOIs, antidepressants, or medications for Parkinson’s. It should be avoided by those with a history of melanoma or mental health conditions like schizophrenia.
7/10— Highly effective at raising dopamine, but because it bypasses the body's natural "ratelimiting" steps for dopamine production, it should be used with caution compared to simpler amino acids.
An acetylated form of L-carnitine that can cross the blood-brain barrier
An acetylated form of L-carnitine that can cross the blood-brain barrier
It supports mitochondrial energy production and is primarily used to combat mental fatigue and support long-term brain health.
You have a history of seizures or an underactive thyroid.
6/10— Strong evidence for agerelated cognitive support, but less evidence for acute performance in healthy young adults at lower doses.
A ready-to-use ketone body that provides an alternative fuel source for the brain and muscles.
A ready-to-use ketone body that provides an alternative fuel source for the brain and muscles.
Found primarily in G Fuel Cans. It provides an immediate, non-sugar energy source that helps maintain mental clarity and physical stamina, especially during periods of high exertion or low-carb dieting.
Supplemental doses vary, but 1,000 mg to 3,000 mg are common for supporting ketosis or energy.
You have kidney disease or are sensitive to mineral salts (as ketones are often bound to potassium or sodium).
7/10— Excellent for cognitive "fuel" and bridging energy gaps, though it is most effective when the body is already in a fatburning state.
A concentrated extract from the whole pomegranate fruit, standardized for high levels of polyphenols like punicalagins.
A concentrated extract from the whole pomegranate fruit, standardized for high levels of polyphenols like punicalagins.
It is a powerful antioxidant and anti-inflammatory agent. In a sports context, it supports nitric oxide production, which can enhance blood flow (vasodilation) and delay fatigue during intense exercise.
You are taking blood thinners (like Warfarin) or statins for cholesterol, as pomegranate can interfere with how the liver metabolizes these drugs.
8/10— Very wellsupported as a "super-antioxidant" for heart health and blood flow, though its direct impact on muscle building is secondary to its recovery benefits.
A naturally occurring amino acid-like compound found in high concentrations in the brain, heart, and muscles.
A naturally occurring amino acid-like compound found in high concentrations in the brain, heart, and muscles.
It supports electrolyte balance, cardiovascular health, and healthy muscle contraction by regulating calcium levels.
You are pregnant, breastfeeding, or taking blood pressure medications, as it may enhance their effects.
9/10— Extensively researched and proven to be one of the safest and most effective amino acids for cellular hydration and metabolic support.
A high-quality, complete protein derived from milk (the watery portion that separates during cheese production).
A high-quality, complete protein derived from milk (the watery portion that separates during cheese production).
It contains all nine essential amino acids and is particularly rich in Leucine, which triggers Muscle Protein Synthesis (MPS). It helps repair muscle tissue after exercise, supports lean mass growth, and increases satiety (the feeling of fullness), which can help with weight management.
A standard effective dose for muscle repair is 15g to 30g per serving. G Fuel’s specific formula provides 15g per serving.
You have a severe milk allergy or significant lactose intolerance (though Isolate forms are lower in lactose, G Fuel uses a standard whey blend). It should also be used with caution if you have pre-existing kidney or liver disease.
10/10— It is the gold standard for supplemental protein due to its rapid digestion rate and superior amino acid profile for muscle recovery.
An essential trace mineral involved in DNA synthesis, immune cell function, and protein metabolism.
An essential trace mineral involved in DNA synthesis, immune cell function, and protein metabolism.
Zinc is lost through sweat, and a deficiency can lead to lowered testosterone levels and weakened immunity. It is vital for cellular repair and maintaining energy levels during training.
The daily requirement is 8 mg to 11 mg, but athletes often supplement with 15 mg to 30 mg to account for losses through exercise.
You are taking certain antibiotics (tetracyclines), as zinc can block their absorption. Do not exceed 40 mg daily long-term, as it can cause a copper deficiency.
9/10— Essential for hormonal health and recovery. It is highly effective at preventing performance dips caused by mineral deficiency.
A proprietary plant-based blend including green coffee bean, green tea, turmeric, tart cherry, blueberry, broccoli, and kale.
A proprietary plant-based blend including green coffee bean, green tea, turmeric, tart cherry, blueberry, broccoli, and kale.
Unlike many pump ingredients that provide the "building blocks" of nitric oxide, S7 triggers the body's internal production to increase N.O. levels by up to 230%.
You have known allergies to any of the specific plant extracts (like broccoli or tart cherry) in the blend.
7/10— Emerging research is very promising and shows high efficacy at low doses, but more independent (nonmanufacturer funded) studies would solidify its "Master" status.
