CalciumThe foundation

More key ingredients

Clinically studied beta-glucan

Beta-glucan is a natural fiber from baker’s yeast. Your innate immune cells recognize its shape, which is why scientists have been studying it for decades. It's byMae's flagship "immunity training" ingredient: a beta-glucan the innate immune system recognizes and uses to support the body's natural defenses.* Rather than a reactive boost, it's built for steady, everyday immune support.*

Zinc

Zinc is an essential trace mineral your body can't store or make, so it needs a steady daily supply. It's a cofactor for hundreds of enzymes and supports the normal growth and function of immune cells — which is why it's a cornerstone of everyday immune support.*

Selenium

Selenium is an essential trace mineral that acts as an antioxidant, helping protect cells from oxidative stress. It supports normal immune function and normal thyroid function, and the body needs only a small, steady daily amount.*

Vitamin D3

Vitamin D3 (cholecalciferol) is the form of vitamin D your skin makes from sunlight and the most bioavailable form to take by mouth. It supports normal immune function and helps your body absorb calcium for bone support — and because sun exposure varies, a daily dietary supply helps keep levels steady.*

Vitamin K2

Vitamin K2 is a fat-soluble vitamin best known for its role in calcium metabolism. byMae uses the MK-7 form, a long-acting, well-studied form of K2.*

Vitamin C

Vitamin C (ascorbic acid) is a water-soluble antioxidant and one of the best-known everyday immune-support nutrients. Because it's water-soluble, your body uses what it needs and passes the rest, so a steady daily supply — rather than an occasional megadose — is what keeps levels consistent.*

Vitamin A

Vitamin A is a fat-soluble nutrient essential for normal immune function, healthy vision, and the mucosal surfaces — like the lining of your airways and gut — that form the body's first physical barrier.* byMae supplies it as beta-carotene, a plant-derived provitamin A that the body converts to active vitamin A as it's needed.*

Vitamin E

Vitamin E is a fat-soluble antioxidant that helps protect cells — including immune cells — from oxidative stress, and it supports normal immune function.* byMae uses the natural D-alpha tocopheryl form, which the body recognizes and uses more readily than the synthetic version.*

Lutein

Lutein is a carotenoid — a yellow plant pigment and antioxidant — that the body concentrates in the macula of the eye, where it helps support normal vision and eye health.* It isn't classed as an essential nutrient, so it has no established Daily Value, but it plays a recognized antioxidant and eye-support role.*

Vitamin B1 (Thiamine)

Vitamin B1 (thiamine) is a water-soluble B vitamin your body can't store in large amounts, so it needs a steady daily supply. It acts as an essential cofactor that helps turn the carbohydrates in food into usable energy, which is why it supports normal energy-yielding metabolism.*

Vitamin B2 (Riboflavin)

Vitamin B2 (riboflavin) is a water-soluble B vitamin that forms the coenzymes FAD and FMN. It supports normal energy-yielding metabolism and helps the body maintain its antioxidant defenses by recycling other protective molecules.*

Vitamin B3 (Niacin)

Vitamin B3 is a water-soluble B vitamin and the building block of NAD and NADP — coenzymes central to how nearly every cell produces energy. It supports normal energy-yielding metabolism, and byMae uses niacinamide, the flush-free form.*

Vitamin B5 (Pantothenic Acid)

Vitamin B5 (pantothenic acid) is a water-soluble B vitamin and the core of Coenzyme A, a molecule your cells use in a huge range of energy reactions. It supports normal energy-yielding metabolism and the normal synthesis of certain hormones, including those made by the adrenal glands.*

Biotin (Vitamin B7)

Biotin (vitamin B7) is a water-soluble B vitamin that acts as a coenzyme in the metabolism of fats, carbohydrates and protein. Your body needs only a small, steady daily amount, and it supports normal energy-yielding metabolism from all three of those macronutrients.*

Vitamin B6

Vitamin B6 is a water-soluble B vitamin that works as a coenzyme in more than a hundred enzyme reactions, especially the metabolism of amino acids — the building blocks of proteins. It supports normal immune function and helps the body turn food into the proteins and signaling molecules it uses every day.*

Vitamin B9 (Folate)

Folate is the essential B vitamin (vitamin B9) that the body needs for normal cell division and the formation of new cells. byMae uses L-5-MTHF, the active methylfolate form the body can use directly, rather than synthetic folic acid that has to be converted first.*

Vitamin B12

Vitamin B12 is an essential water-soluble B vitamin the body needs for normal energy-yielding metabolism, normal nervous system function, and the formation of red blood cells. byMae uses methylcobalamin, the active, body-ready form of B12, rather than cheaper synthetic cyanocobalamin.*

Choline

Choline is an essential nutrient that many people simply don't get enough of from food. The body uses it for normal liver function, for the structure of every cell membrane, and to make acetylcholine, a signaling molecule the brain and nervous system rely on.*

Iron

Iron is a mineral, and food has two kinds of it, heme and nonheme. Plants have the nonheme kind.

Magnesium

Magnesium is a mineral. An adult body holds about 25 grams of it.

Manganese

Manganese is a trace mineral, and a different one from magnesium. An adult body holds about 10 to 20 milligrams of manganese, next to about 25 grams of magnesium.

Chromium

Chromium is an essential trace mineral needed in tiny amounts. It plays a role in normal macronutrient metabolism and supports the normal action of insulin, helping the body handle carbohydrates, fats, and proteins from the diet.*

Curious how it all works together? Read the science of immunity training.