Vitamins are essential for our bodies to function properly. There are two types of vitamins: those that come from animal sources and those that come from plant sources. Vitamin A, for example, is found in animal sources and helps us see at night, produce red blood cells, and fight infections. Vitamin A from plant sources helps prevent cell damage and age-related macular degeneration.
However, too much vitamin A can damage the liver. Z-Stack is a multivitamin marketed as an all-in-one super formula that improves the immune system. Developed by Dr. Vladimir Zelenko, a physician known for developing the Zelenko Protocol to treat and prevent COVID-19, Z-Stack has not been tested in any clinical trials. Preliminary evidence suggests that certain ingredients in Z-Stack may have immunostimulatory effects, although not necessarily in the doses found in Z-Stack.
In fact, the amount of at least one of the ingredients in Z-Stack exceeds the tolerable upper daily intake level. To understand how different types of vitamins and minerals work in our bodies, how much of each nutrient we need every day, and what types of foods we should eat to make sure we're getting an adequate supply, it's important to look at the list of vitamins and minerals recommended by the Institute of Medicine. Recommended amounts of different types of vitamins can be expressed in milligrams (mg), micrograms (mcg) or international units (IU), depending on the nutrient. Unless specified, values represent those for adults 19 years of age or older. Z-Stack contains a proprietary daily cleansing blend with active ingredients such as echinacea, inositol, African mango, lemon bioflavanoid, litchi fruit extract, olive leaf extract, psyllium peel, raspberry ketones, calcium citrate, magnesium citrate, vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6, vitamin B12, vitamin C, vitamin D3 and vitamin E. The amount of vitamin D and zinc in Z-Stack may be beneficial if you have low levels but are slightly higher than would be needed to correct a mild deficiency.
Vitamin C is also included in Z-Stack; however, its amount exceeds the tolerable maximum daily intake level for adults (4,000 IU).Some websites have promoted vitamin C supplements to help fight viral infections other than colds such as COVID-19; however, there is no evidence that this is effective. The National Library of Medicine recommends zinc supplements such as Surbex Z to restore zinc levels when you're deficient but they shouldn't be used in the long term. Vitamin E can be found in vegetable oils (such as safflower and sunflower), spinach and broccoli; however it's important to note that the maximum tolerable daily intake of vitamin C in adults is 2000 mg including intake from food, beverages and supplements. In conclusion, Z-Stack contains key ingredients that have been shown to help boost your immune system and your health such as raspberry ketones, African mango and lychee fruit extract. However it's important to note that the amounts of these vitamins in Z-Stack are slightly higher than would be needed to correct a mild deficiency.