Highest effect
Biotin
Vitamin
Impact
Highest effect
Biotin (Vitamin B7) is essential for the function of carboxylase enzymes, which are vital for gluconeogenesis (creating glucose for energy) and the metabolism of both fatty acids and branched-chain amino acids. It is a key piece of the body's core metabolic machinery.
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Magnesium
Mineral
Impact
Highest effect
Typical dose:200–400 mg / day
Magnesium plays a critical role in glucose metabolism and insulin sensitivity. Deficiency is common and can impair the body's ability to use glucose for energy, leading to metabolic dysfunction. Ensuring adequate magnesium levels is foundational for efficient energy production.
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Niacin
Vitamin
Impact
Highest effect
Niacin (Vitamin B3) is critical for cellular energy production. As a precursor to NAD+ and NADP+, it is directly involved in glycolysis, the Krebs cycle, and the electron transport chain—the core pathways for generating ATP from carbohydrates, fats, and proteins. Its role is foundational for a high-functioning metabolism.
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Omega-3
Fatty Acid
Impact
Highest effect
Typical dose:1000–3000 mg / day
Omega-3 fatty acids, particularly EPA and DHA, help reduce the low-grade chronic inflammation often associated with metabolic dysfunction. They also support healthy cell membrane function, which is crucial for efficient insulin signaling.
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Riboflavin
Vitamin
Impact
Highest effect
Typical dose:1.3–10 mg / day
Riboflavin is a non-negotiable component of the electron transport chain, the final stage of cellular energy (ATP) production. It is fundamentally required for deriving energy from all macronutrients, making it a foundational element for a healthy metabolic rate.
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Thiamin
Vitamin
Impact
Highest effect
Typical dose:1.2–100 mg / day
Thiamin is essential for the function of key enzymes in the citric acid cycle, a central hub of cellular energy production. A deficiency directly impairs the body's ability to extract energy from glucose, making it a foundational nutrient for metabolic function.
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Vitamin B12
Vitamin
Impact
Highest effect
Vitamin B12 is a crucial cofactor for enzymes involved in the metabolism of fatty acids and certain amino acids, ensuring these fuels can enter energy-producing pathways. A deficiency can lead to fatigue and impaired metabolism, making adequate levels foundational for optimal energy.
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Vitamin B5
Vitamin
Impact
Highest effect
Typical dose:5–10 mg / day
Pantothenic Acid is central to metabolism because as part of Coenzyme A, it is required for the oxidation of fatty acids and for the entry point into the citric acid cycle (as Acetyl-CoA). Virtually all energy-yielding pathways depend on it, establishing it as a foundational nutrient for metabolism.
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Vitamin B6
Vitamin
Impact
Highest effect
Vitamin B6, in its active P-5-P form, is a critical cofactor for over 100 enzyme reactions, including the breakdown of stored glycogen into glucose for energy (glycogenolysis) and the metabolism of amino acids. Ensuring adequate B6 is foundational for efficient energy conversion from stored fuels and dietary protein.
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Vitamin D
Vitamin
Impact
Highest effect
Typical dose:1000–4000 IU / day
Low Vitamin D levels are associated with impaired insulin secretion and resistance. Correcting a deficiency is a foundational step that can help optimize the function of numerous systems involved in metabolic health, including hormone regulation and inflammation.
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Zinc
Mineral
Impact
Highest effect
Zinc is required for the synthesis of Thyroid Releasing Hormone (TRH) and for the proper function of thyroid receptors. It also plays a key role in insulin synthesis, storage, and secretion. A deficiency in zinc can directly impair both thyroid function and insulin sensitivity, making adequate levels foundational for a healthy metabolism.
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High effect
Acetyl L-Carnitine
Other
Impact
High effect
Typical dose:500–2000 mg / day
Acetyl L-Carnitine (ALCAR) is a highly bioavailable form of carnitine. It acts as a shuttle, moving long-chain fatty acids across the mitochondrial membrane where they can be oxidized ('burned') for ATP production. This is particularly beneficial during periods of calorie restriction or exercise.
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Caffeine
Other
Impact
High effect
Typical dose:100–300 mg / day
Caffeine acts as a potent thermogenic agent, increasing both resting metabolic rate and total daily energy expenditure. It stimulates the release of catecholamines like adrenaline, which mobilize fatty acids from fat tissue to be used as fuel.
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Coenzyme Q-10
Other
Impact
High effect
Typical dose:100–300 mg / day
CoQ10 is essential for cellular energy production. A higher metabolic rate demands more energy, and CoQ10 ensures the mitochondria can meet this demand efficiently. Supplementation can support energy levels, as natural production tends to decline with age.
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Creatine
Other
Impact
High effect
Typical dose:3000–5000 mg / day
While not a direct thermogenic, Creatine boosts performance in high-intensity exercise, promoting the growth of metabolically active muscle tissue. More muscle requires more energy to maintain, even at rest, thus elevating your baseline metabolism over time.
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Curcumin
Botanical
Impact
High effect
Chronic inflammation impairs insulin signaling and contributes to metabolic syndrome. Curcumin's powerful anti-inflammatory properties help restore proper cellular function. Furthermore, by activating the master metabolic switch AMPK, it promotes the burning of glucose and fats for energy rather than storage.
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Green Tea
Botanical
Impact
High effect
Typical dose:400–800 mg / day
The primary catechin in green tea, epigallocatechin gallate (EGCG), works with caffeine to inhibit an enzyme that breaks down norepinephrine. This results in prolonged stimulation of the nervous system, leading to a sustained increase in calorie burning and fat utilization.
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Resveratrol
Botanical
Impact
High effect
Resveratrol has been shown to increase the number and efficiency of mitochondria, the cellular powerhouses where fuel is burned. By activating the SIRT1 gene, it can improve glucose homeostasis and increase fatty acid oxidation, effectively making cellular energy production more robust and efficient.
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Moderate effect
Ginger
Botanical
Impact
Moderate effect
Compounds in ginger, such as gingerols, can enhance the thermic effect of food, meaning the body burns slightly more calories during digestion. It has also been shown to improve markers of blood sugar control and can help reduce feelings of hunger, contributing to better overall energy balance.
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Taurine
Amino Acid
Impact
Moderate effect
Taurine plays multiple roles in metabolism. It's a component of bile acids needed to absorb fats and fat-soluble vitamins, it enhances insulin's ability to dispose of glucose, and it functions as an antioxidant within mitochondria, supporting efficient energy production.
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Situational effect
Ashwagandha
Botanical
Impact
Situational effect
As an adaptogen, Ashwagandha helps the body regulate its stress response, primarily by helping to lower chronically elevated cortisol. High cortisol can promote insulin resistance and abdominal fat storage, so managing it is an important, though indirect, strategy for supporting metabolic health.
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Chromium
Mineral
Impact
Situational effect
Typical dose:200–1000 mcg / day
Chromium is a component of a molecule called chromodulin, which helps insulin bind to its receptors on cells. This improves glucose uptake and utilization, which can help manage cravings and prevent the metabolic slowdown associated with poor blood sugar control.
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Iodine
Mineral
Impact
Situational effect
Typical dose:150–300 mcg / day
The thyroid gland cannot produce its hormones without adequate iodine. In cases of insufficiency, thyroid function slows, directly reducing metabolic rate. For individuals with low iodine intake, this supplement is crucial for restoring normal metabolic function.
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Selenium
Mineral
Impact
Situational effect
Typical dose:55–200 mcg / day
Even with sufficient thyroid hormone production, a selenium deficiency can prevent its activation, leading to symptoms of a slow metabolism. Adequate selenium ensures the thyroid hormones produced can effectively carry out their function of regulating energy expenditure.
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Limited evidence
Conjugated Linoleic Acid
Fatty Acid
Impact
Limited evidence
Typical dose:3.2–6.4 grams / day
Human clinical trials on CLA have produced mixed results, with any observed effects on fat mass or metabolic rate being very modest and not reliably reproducible. Its classification should reflect the low probability of a meaningful outcome for the average user.
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Vanadium
Mineral
Impact
Limited evidence
Typical dose:0.5–2 mg / day
While Vanadium can mimic insulin's effects, the dosages needed to achieve this often approach toxic levels, creating an unfavorable risk-benefit profile. Its use is not recommended for general metabolic support due to potential adverse effects.
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