Men's By Rexall Sundown Naturalist Overview & Drug Interactions

Vitamin D is a fat-soluble vitamin that plays a crucial role in several bodily processes. It helps the body absorb calcium and phosphorus, which are necessary for healthy bones and teeth. It is also important for immune system function and may help to protect against certain diseases. Vitamin D is found in a variety of foods, including fatty fish, egg yolks, and fortified foods such as milk and cereal. It is also produced by the body when the skin is exposed to sunlight. Vitamin D supplements are available in a variety of forms, including tablets, capsules, and liquids. The recommended daily intake of vitamin D varies depending on age, sex, and other factors, and it is important to follow the dosage recommendations provided by a healthcare professional. There are several different forms of vitamin D available, with the two most popular being ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3).

Vitamin E is a fat-soluble vitamin found naturally in a variety of foods, including vegetable oils, nuts, seeds, and leafy green vegetables. Vitamin E is also available as a dietary supplement and is often added to skincare products. Vitamin E has many roles in the body, including protecting cells from oxidative stress and supporting immune function.

Niacin, also known as vitamin B3, is a water-soluble vitamin found in a variety of foods, including meat, poultry, fish, and fortified grains. It plays a variety of roles in the body, including in the metabolism of carbohydrates, fats, and proteins. It is also necessary for the production of energy in the body and in the synthesis of different hormones. Niacin deficiency is rare in developed countries, however, supplementation has been shown to have several positive benefits. For example, it can reduce the risk of diabetic neuropathy (i.e., nerve pain) and has been shown effective for treating some types of high cholesterol (extended-release niacin is used as a prescription drug in the United States for this purpose). There is a multitude of niacin forms available as dietary supplements, including NADH, niacinamide, and nicotinamide riboside, all with different properties.

Vitamin B12, also known as cobalamin, is a water-soluble vitamin crucial for several bodily functions. It plays a pivotal role in the formation of red blood cells, aiding in the prevention of anemia. Vitamin B12 is essential for maintaining a healthy nervous system and proper brain function, as it is involved in the synthesis of myelin, the protective sheath around nerve fibers. This vitamin is primarily found in animal-based foods such as meat, fish, dairy products, and eggs, making it important for vegetarians and vegans to consider supplementation. A deficiency in vitamin B12 can lead to neurological issues, fatigue, and cognitive impairment.

Biotin, also known as vitamin H or vitamin B7, is a water-soluble vitamin that plays a role in various metabolic processes in the body. It is necessary for the growth and maintenance of healthy skin, hair, and nails, and is also involved in the metabolism of carbohydrates, fats, and amino acids. Biotin is considered to be generally safe when consumed in the recommended daily amounts but it is important to note that consuming large amounts of biotin-containing supplements or products can cause falsely high or falsely low test results for certain laboratory tests, such as those for thyroid function, hormone levels, and certain biomarkers for certain diseases.

Calcium is a vital nutrient found in various foods such as dairy products, certain vegetables, and many fortified items. Over 99% of the body's calcium is stored in the bones and teeth, predominantly as hydroxyapatite. The remaining calcium circulates in the blood, extracellular fluid, muscles, and other tissues, where it is essential for processes like nerve signaling, muscle contraction, vascular activities, glandular secretion, and maintaining cell membrane and capillary permeability. It also plays critical roles in enzyme reactions, respiration, kidney function, and blood clotting, and is involved in neurotransmitter and hormone release, amino acid uptake, vitamin B12 absorption, and gastrin secretion. Calcium balance changes with age: it is positive during periods of growth, stable in adulthood, and tends to become negative in older age. Calcium loss occurs through feces, urine, sweat, and shedding skin cells. In women, reduced estrogen levels decrease calcium absorption and retention, increase bone turnover, and lead to lower bone mass. Calcium supplements come in various forms, including citrate and carbonate, which differ mainly in their calcium content and absorption rates. Calcium citrate is easily absorbed and can be taken without food, making it suitable for older adults or those with low stomach acid. In contrast, calcium carbonate, which contains a higher percentage of calcium, is best absorbed when taken with meals.

Iodine is a mineral that is crucial for our body's ability to produce thyroid hormone, which helps control our growth, metabolism, and energy levels. A lack of iodine in the diet is a common problem around the world and can lead to intellectual development issues. Adding iodine to salt (i.e., iodized salt) has helped reduce this problem. Iodine is commonly utilized as a dietary supplement, both in multivitamin preparations and as a standalone ingredient as it is purported to have overall health and wellness benefits, not just in those who are deficient. One such standalone iodine product is 'Iodoral'. Studies have shown iodine supplementation may help improve cognitive function and boost energy levels but more research is needed. It is recommended that you should be under medical supervision if you plan on taking iodine as there may be a risk of certain side effects with high dosages.

Magnesium is a mineral that is essential for the proper functioning of the body. It plays a role in many important physiological processes, including the contraction and relaxation of muscles, the transmission of nerve impulses, and the regulation of blood pressure. Magnesium is found in a variety of foods, including leafy green vegetables, nuts, and grains, and it is also available as a dietary supplement. There are several different forms of magnesium that are available as supplements, all of which can be used to prevent deficiency. Additionally, magnesium is purported to have several different health benefits, such as improving sleep, reducing muscle cramps, reducing anxiety, and preventing or treating migraines. Although magnesium is essential for health, magnesium-containing foods and supplements can interact with some prescription medications if used at the same time.

Zinc is a mineral that is essential for the proper functioning of the human body. It is involved in many important physiological processes, including immune system function, wound healing, taste, and smell. Zinc is found in a variety of foods, including meat, seafood, and whole grains, and it is also available as a dietary supplement. Zinc supplements may be used to treat or prevent zinc deficiency, which can occur due to certain medical conditions, such as gastrointestinal disorders, alcohol abuse, and certain medications. Zinc supplements may also be used for other purposes, such as to boost the immune system, improve acne, and reduce the severity and duration of colds. There are several different forms of zinc supplements available, including zinc gluconate, zinc acetate, and zinc sulfate. The most common form of zinc supplements is zinc gluconate, which is well absorbed and is less likely to cause stomach-related side effects than other forms of zinc.

Selenium is an essential trace element that plays a crucial role in various physiological functions in the human body. It is often included in dietary supplements due to its antioxidant properties and its contribution to maintaining a healthy immune system. Selenium is important for thyroid function and may also have a role in protecting against certain chronic diseases. However, it's essential to note that excessive selenium intake can be harmful, so it's crucial to adhere to recommended daily allowances and consult with a healthcare professional before taking selenium supplements.

Manganese is an essential trace mineral that plays a vital role in various physiological processes within the human body. It is required for proper brain function, bone formation, enzyme activation, and wound healing. Manganese also contributes to metabolism, antioxidant defense, and the formation of connective tissues.

Chromium is a trace mineral that is found in small amounts in the human body. It is believed to play a role in the metabolism of carbohydrates, fats, and proteins. It is used as a dietary supplement for its purported ability to help with weight loss and blood sugar control. There is some evidence to suggest that chromium supplements may help to improve blood sugar control in people with type 2 diabetes, although the results of studies on this topic have been mixed. Some studies have found that chromium supplements can improve insulin sensitivity and reduce blood sugar levels in those with poorly controlled diabetes, while others have found no significant effects.

Saw palmetto (Serenoa repens) is a plant native to the southeastern United States and a member of the Arecaceae family. It is a small, palm-like tree with fan-shaped leaves that produces small, white flowers. The fruit of the plant is a small, dark purple berry, which is what is used in dietary supplements. In traditional medicine, saw palmetto has been used to treat a variety of health conditions, including prostate problems (such as BPH [benign prostatic hyperplasia]) and urinary tract disorders. It is also claimed to have anti-inflammatory and antioxidant properties and to improve hair growth.

Eleuthero (Eleutherococcus senticosus) is a plant native to Asia and a member of the Araliaceae family. It is also commonly known as 'Siberian ginseng' or 'eleuthero root'. The root of the plant is used in traditional medicine for its purported ability to improve physical and mental performance, boost the immune system, and reduce fatigue. It is also claimed to have anti-inflammatory and antioxidant properties. Eleuthero is often referred to as an 'adaptogen'. Adaptogens are believed to help the body resist stress. It is important to note that although eleuthero is known as 'Siberian ginseng', it is not related to Panax ginseng.

Coenzyme Q10, also known as CoQ10, is a naturally occurring substance that is found in every cell of the body and plays an essential role in energy production within the mitochondria, which are the powerhouse of the cells. CoQ10 also acts as an antioxidant, protecting cells from damage caused by harmful free radicals. While CoQ10 is endogenous, meaning our body can produce it on its own, levels can decrease with age, with certain medications (e.g., statins) or due to certain medical conditions. In such cases, supplementation with CoQ10 may be beneficial. Additionally, CoQ10 supplements have been studied for a variety of health benefits, including improving heart health, reducing inflammation, and potentially even aiding in the treatment of neurological disorders such as Parkinson's disease. However, it's important to note that while some studies have shown potential benefits, the research on CoQ10 supplementation is still ongoing, and more studies are needed to fully understand its effects on the body.

Pumpkin is a type of squash native to North America. Pumpkin is a good source of nutrients, including vitamin A, vitamin C, potassium, and fiber. It is also a rich source of antioxidants, particularly beta-carotene, which is converted to vitamin A in the body. Pumpkin has been used historically as a dietary supplement for supporting eye health, boosting the immune system, reducing the symptoms of benign prostatic hyperplasia, and helping to reduce the risk of certain types of cancer. Pumpkin is also a good source of fiber, which can help improve digestion and lower cholesterol levels. Both pumpkin and pumpkin seed extracts have been utilized for dietary supplement purposes.

Stinging nettle (Urtica dioica) is a perennial flowering plant that belongs to the Urticaceae family. It is native to Europe, Asia, and North America, and is characterized by its green leaves and small, greenish-white flowers. Stinging nettle has small, stinging hairs on its leaves and stems, which can cause a painful rash when touched. The leaves and the roots of stinging nettle have been used in traditional medicine to treat a variety of conditions such as joint pain, diabetes, enlarged prostate, anemia, and urinary tract infections. It is also used as a diuretic and to help with allergies as it contains the compound quercetin. The leaves and stems of the plant are edible and can be consumed as a vegetable, usually after boiling or steaming to remove the stinging hairs, as the plant is rich in vitamins, minerals, and antioxidants.

Ginkgo (Ginkgo biloba) is a tree native to Asia and is known for its distinctive fan-shaped leaves. The extract of the ginkgo leaf is commonly used in traditional medicine and is one of the most popular dietary supplements consumed worldwide. Its most common use is to help improve memory and cognitive function.

Damiana (Turnera diffusa) is a small, aromatic shrub native to Central and South America, known for its historical use in traditional medicine and as an aphrodisiac. The plant produces small, yellow flowers and has a long history of traditional use among indigenous peoples. Damiana leaves are commonly dried and brewed as an herbal tea, believed to have mild stimulant and relaxant properties.

Silicon, atomic number 14, is the second most abundant element on Earth, after oxygen. It is present in the human body in small amounts (such as in the skin, hair, and nails) and is considered a trace mineral in that regard. Dietary sources of silicon include oats, barley, rice, and some fruits/vegetables. Silicon is a popular dietary supplement, often consumed in the form of silica, which is a chemical compound made up of silicon and oxygen, or as silicic acid (also known as orthosilicic acid). Another common form of silicon utilized is Choline-stabilized orthosilicic acid (ch-OSA), which is the active ingredient in the popular product Biosil. Silicon is used for its purported effects to improve the health and appearance of the skin, hair, and nails. It has also historically been used for other health conditions, such as osteoporosis, cardiovascular disease, and cognitive decline.

Yohimbe is an evergreen tree native to western Africa. The bark of the tree contains a chemical called yohimbine in concentrations ranging from 0.6-1.38%, which has been used in traditional medicine as a natural aphrodisiac and sexual performance enhancer. While widely available as a dietary supplement, yohimbe should be used with caution, as it can have side effects, such as dizziness, increased blood pressure and rapid heart rate.

Alfalfa, also known as Lucerne, is a perennial flowering plant in the pea family Fabaceae. It is native to southwestern Asia and the Mediterranean region, but it is now grown in many parts of the world, mainly as a forage crop for livestock. Alfalfa is a rich source of vitamins and minerals, such as vitamins A, C, E, and K, and manganese. It also contains coumestrol, a phytoestrogen. It has been used as a natural remedy for a variety of conditions, such as arthritis and high cholesterol. It may also help treat gastrointestinal disorders, rheumatoid arthritis (RA), asthma, menstrual irregularities, as well as bladder, kidney, and prostate issues.