Supplement guides
Plain-English guides to 31 popular supplements: forms, cautions, and how to find a clean version.


Ashwagandha
Ashwagandha is an herb from the Ayurvedic tradition, classed as an adaptogen. It supports a healthy response to everyday stress and restful sleep.
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B-Complex
B-Complex is the eight B vitamins in one formula. It supports normal energy metabolism and nervous system health.
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Beet root
Beet root is a powder or extract from beets that's naturally rich in dietary nitrates. It supports healthy blood flow and exercise performance.
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Biotin
Biotin is vitamin B7. It supports healthy hair, skin, and nails.
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Calcium
Calcium is an essential mineral. It supports strong bones and teeth.
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CoQ10
CoQ10 is coenzyme Q10, a compound your cells use to make energy. It supports heart health and cellular energy.
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Collagen
Collagen is protein peptides from animal connective tissue. It supports healthy skin, hair, nails, and joints.
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Creatine
Creatine is a compound your muscles use for quick energy, and one of the most studied sports supplements. It supports strength and power during…
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Elderberry
Elderberry is an extract of black elderberry, a traditional folk remedy. It supports normal immune function.
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Electrolytes / hydration
Electrolytes is blends of sodium, potassium, and magnesium. It supports hydration during exercise, heat, and fasting.
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Fiber (psyllium & other)
Fiber is psyllium husk and other soluble fibers. It supports regularity and digestive health.
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Fish oil / Omega-3
Fish oil is EPA and DHA omega-3 fatty acids from fish, krill, or algae. It supports heart, brain, and joint health.
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Glucosamine / joint
Glucosamine is glucosamine, often paired with chondroitin and MSM. It supports joint comfort and cartilage health.
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Green tea
Green tea is green tea extract, rich in the antioxidant EGCG. It supplies antioxidants and supports healthy metabolism.
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Iron
Iron is an essential mineral. It supports healthy red blood cell production and energy.
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L-theanine
L-theanine is an amino acid found in tea leaves. It supports calm, focused relaxation without drowsiness.
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Magnesium
Magnesium is an essential mineral involved in hundreds of processes in the body. It supports muscle function, relaxation, and sleep quality.
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Melatonin
Melatonin is a hormone that helps regulate your sleep-wake cycle. It supports falling asleep and adjusting to jet lag.
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Multivitamin
Multivitamin is a daily blend of essential vitamins and minerals. It helps fill nutritional gaps.
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NAC
NAC is N-acetyl cysteine, a form of the amino acid cysteine. It supports your body's production of glutathione, a key antioxidant.
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Nattokinase
Nattokinase is an enzyme from natto, a fermented soybean dish. It supports healthy circulation.
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Prebiotic
Prebiotic is fibers like inulin and partially hydrolyzed guar gum (PHGG). It feeds beneficial gut bacteria and support digestive health.
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Prenatal multivitamin
Prenatal multivitamin is a multivitamin designed for before and during pregnancy. It supports nutritional needs before and during pregnancy.
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Probiotic
Probiotic is live beneficial bacteria. It supports digestive and gut health.
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Protein powder
Protein powder is concentrated protein from whey, casein, egg, or plants. It supports muscle recovery and daily protein intake.
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Turmeric / Curcumin
Turmeric is curcumin, the active compound in turmeric. It supports joint comfort and a healthy inflammatory response.
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Vitamin B12
Vitamin B12 is cobalamin, an essential B vitamin. It supports energy and nervous system health.
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Vitamin C
Vitamin C is ascorbic acid, an essential antioxidant vitamin. It supports normal immune function and collagen formation.
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Vitamin D
Vitamin D is the sunshine vitamin. It supports bone health and immune function.
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Vitamin K / K2
Vitamin K is vitamin K, including K2 forms like MK-7. It supports bone health and helps direct calcium where it belongs.
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Zinc
Zinc is an essential mineral. It supports immune function and healthy skin.
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