One A Day manufactures a variety of daily multivitamins targeting a wide range of the population. Multivitamins are a combination of vitamins that are normally found in foods and other natural sources. They can also provide vitamins that are not normally ingested through the diet. One A Day's vitamin antioxidant supplement, called One A Day Maximum, includes additional ingredients to serve as an antioxidant formula designed to maintain your natural immunity.
Function
Antioxidants are substances that protect your cells against the effects of free radicals. Free radicals are produced when your body breaks down food or may result from exposure to environmental factors like tobacco smoke or radiation. According to MedlinePlus, free radicals can damage cells and may play a role in diseases of the heart or cancer. They are found in several vitamins and many foods, including fruits, vegetables, nuts, grains, meats, poultry and fish.
Types
One A Day offers a variety of multivitamins for men, women, teens and people with cholesterol and blood pressure problems. One A Day created Maximum as an antioxidant supplement; the Energy vitamin as an energy supplement; the Essential vitamin to give 100 percent of 10 important vitamins in a smaller tablet; and prenatal vitamins. Both the Maximum and the Energy vitamins contain vitamins A, C, E and selenium, which the One A Day website claims to make up their "special antioxidant formula."
Ingredients
Some of the most common antioxidants include vitamins A, C and E, beta-carotene, lutein, lycopene and selenium. One A Day Maximum includes vitamins A, C and E as well as selenium, and the company's website states these ingredients are used to replace key nutrients that may be depleted through intense physical activity. Vitamins A and C also help support a healthy immune system, and vitamin C maintains heart, joint and bone health. The body cannot manufacture the micronutrient antioxidants vitamins E, C and selenium, so it is important they are supplied in the diet to interact with free radicals and keep vital molecules from being damaged.
Effects
One A Day's website purports the One A Day Maximum multivitamin is designed to help maintain your natural defense and immunity with its antioxidant formula, to help you use B vitamins to convert food to physical and mental energy, to help you maintain an active and healthy lifestyle, and to replace nutrients that may be depleted through physical activity. One A Day Maximum is designed to use chromium and B-vitamins to support physical energy, use vitamins C, D and calcium to maintain joint and bone health, support mental energy with B-vitamins and a use vitamin C and zinc to support a healthy immune system.
Warning
Don't take more than the recommended dose of the One A Day multivitamin. Large doses of minerals can cause side effects like teeth stains, increased urination, stomach bleeding, confusion, muscle weakness or heart palpitations. Overdose of vitamins A, D, E or K can cause life-threatening side effects, according to Drugs.com. Overdose symptoms may include stomach pain, diarrhea, vomiting, loss of appetite, hair loss, weight loss, severe headache, muscle or joint pain, back pain, blood in your urine or many other symptoms. Avoid dairy products and calcium supplements when taking multivitamins. Calcium can make it harder for your body to absorb some of the multivitamins' ingredients.
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