Vitamins are organic molecules that are essential to an organism in small quantities for proper metabolic function. Essential nutrients cannot be synthesized in the organism in sufficient quantities for survival, and therefore must be obtained through the diet. For example, vitamin C can be synthesized by some species but not by others; it is not considered a vitamin in the first instance but is in the second. Most vitamins are not single molecules, but groups of related molecules called vitamers. For example, there are eight vitamers of vitamin E: four tocopherols and four tocotrienols.
A nutrient is a substance used by an organism to survive, grow and reproduce. The requirement for dietary nutrient intake applies to animals, plants, fungi and protists. Nutrients can be incorporated into cells for metabolic purposes or excreted by cells to create non-cellular structures such as hair, scales, feathers, or exoskeletons. Some nutrients can be metabolically converted into smaller molecules in the process of releasing energy such as for carbohydrates, lipids, proteins and fermentation products leading to end-products of water and carbon dioxide. All organisms require water. Essential nutrients for animals are the energy sources, some of the amino acids that are combined to create proteins, a subset of fatty acids, vitamins and certain minerals. Plants require more diverse minerals absorbed through roots, plus carbon dioxide and oxygen absorbed through leaves. Fungi live on dead or living organic matter and meet nutrient needs from their host.
A dietary supplement is a manufactured product intended to supplement a person's diet by taking a pill, capsule, tablet, powder, or liquid. A supplement can provide nutrients either extracted from food sources, or that are synthetic. The classes of nutrient compounds in supplements include vitamins, minerals, fiber, fatty acids, and amino acids. Dietary supplements can also contain substances that have not been confirmed as being essential to life, and so are not nutrients per se, but are marketed as having a beneficial biological effect, such as plant pigments or polyphenols. Animals can also be a source of supplement ingredients, such as collagen from chickens or fish for example. These are also sold individually and in combination, and may be combined with nutrient ingredients. The European Commission has also established harmonized rules to help insure that food supplements are safe and appropriately labeled.
Over-the-counter (OTC) drugs are medicines sold directly to a consumer without a requirement for a prescription from a healthcare professional, as opposed to prescription drugs, which may be supplied only to consumers possessing a valid prescription. In many countries, OTC drugs are selected by a regulatory agency to ensure that they contain ingredients that are safe and effective when used without a physician's care. OTC drugs are usually regulated according to their active pharmaceutical ingredient (API) and strengths of final products.
Fenugreek is an annual plant in the family Fabaceae, with leaves consisting of three small obovate to oblong leaflets. It is cultivated worldwide as a semiarid crop. Its leaves and seeds are common ingredients in dishes from the Indian subcontinent, and have been used as a culinary ingredient since ancient times. Its use as a food ingredient in small quantities is safe.
An energy drink is a type of functional beverage containing stimulant compounds, usually caffeine, which is marketed as providing mental and physical stimulation. They may or may not be carbonated and may also contain sugar, other sweeteners, or herbal extracts, among numerous other possible ingredients.
Herbal medicine is the study of pharmacognosy and the use of medicinal plants, which are a basis of traditional medicine. With worldwide research into pharmacology, some herbal medicines have been translated into modern remedies, such as the anti-malarial group of drugs called artemisinin isolated from Artemisia annua, a herb that was known in Chinese medicine to treat fever. There is limited scientific evidence for the safety and efficacy of many plants used in 21st-century herbalism, which generally does not provide standards for purity or dosage. The scope of herbal medicine sometimes includes fungal and bee products, as well as minerals, shells and certain animal parts.
Nutraceutical is a marketing term used to imply a pharmaceutical effect from a compound or food product that has not been scientifically confirmed or approved to have clinical benefits. In the United States, nutraceuticals are considered and regulated as a subset of foods by the Food and Drug Administration (FDA).
The United States Federal Food, Drug, and Cosmetic Act is a set of laws passed by the United States Congress in 1938 giving authority to the U.S. Food and Drug Administration (FDA) to oversee the safety of food, drugs, medical devices, and cosmetics. The FDA's principal representative with members of congress during its drafting was Charles W. Crawford. A principal author of this law was Royal S. Copeland, a three-term U.S. senator from New York. In 1968, the Electronic Product Radiation Control provisions were added to the FD&C. Also in that year the FDA formed the Drug Efficacy Study Implementation (DESI) to incorporate into FD&C regulations the recommendations from a National Academy of Sciences investigation of effectiveness of previously marketed drugs. The act has been amended many times, most recently to add requirements about bioterrorism preparations.
Airborne is an American brand of dietary supplement containing herbal extracts, amino acids, antioxidants, electrolytes, vitamins, and other ingredients originally marketed as preventing the common cold and improving immune function.
Food fortification or enrichment is the process of adding micronutrients to food. It can be carried out by food manufacturers, or by governments as a public health policy which aims to reduce the number of people with dietary deficiencies within a population. The predominant diet within a region can lack particular nutrients due to the local soil or from inherent deficiencies within the staple foods; the addition of micronutrients to staples and condiments can prevent large-scale deficiency diseases in these cases.
The health freedom movement is a libertarian coalition that opposes regulation of health practices and advocates for increased access to "non-traditional" health care.
The NHS treatments blacklist is an informal name for a list of medicines and procedures which will not be funded by public money except in exceptional cases. These include but are not limited to procedures which the National Institute for Health and Care Excellence (NICE) has ruled of limited effectiveness and particular brand name medicines. In 2017 there was a proposal for 3,200 over-the-counter (OTC) drugs to be restricted and 18 procedures to be added to the list. This generated some controversy amongst doctors with some arguing that OTC should be blacklisted instead, and others believing the move did not take into account individual patient needs.
The Alliance for Natural Health (ANH) is an advocacy group founded in 2002 by Robert Verkerk and based in the United Kingdom. ANH was founded to raise funds to finance a legal challenge of the EU Food Supplement Directive. ANH lobbies against regulation of dietary supplements, in favour of pseudo-scientific alternative medicine, and advocates dietary and other lifestyle approaches to health. It also criticises established science showing that Megavitamin therapy lack any health benefit.
In herbal medicine, a herbal tonic is used to help restore, tone and invigorate systems in the body or to promote general health and well-being. A herbal tonic is a solution or other preparation made from a specially selected assortment of plants known as herbs. They are steeped in water and drunk either hot or cool. Herbal tonics are believed to have healing properties ranging from relieving muscle and joint pain and extend as far as inhibiting some cancers.
Because of the uncertain nature of various alternative therapies and the wide variety of claims different practitioners make, alternative medicine has been a source of vigorous debate, even over the definition of "alternative medicine". Dietary supplements, their ingredients, safety, and claims, are a continual source of controversy. In some cases, political issues, mainstream medicine and alternative medicine all collide, such as in cases where synthetic drugs are legal but the herbal sources of the same active chemical are banned.
The Dietary Supplement Health and Education Act of 1994 ("DSHEA"), is a 1994 statute of United States Federal legislation which defines and regulates dietary supplements. Under the act, supplements are regulated by the FDA for Good Manufacturing Practices under 21 CFR Part 111. The act was intended to exempt the dietary and herbal supplement industry from most FDA drug regulations, allowing them to be sold and marketed without scientific backing for their health and medical claims.
Calcium supplements are salts of calcium used in a number of conditions. Supplementation is generally only required when there is not enough calcium in the diet. By mouth they are used to treat and prevent low blood calcium, osteoporosis, and rickets. By injection into a vein they are used for low blood calcium that is resulting in muscle spasms and for high blood potassium or magnesium toxicity.
Vitamin B3, colloquially referred to as niacin, is a vitamin family that includes three forms, or vitamers: niacin (nicotinic acid), nicotinamide (niacinamide), and nicotinamide riboside. All three forms of vitamin B3 are converted within the body to nicotinamide adenine dinucleotide (NAD). NAD is required for human life and people are unable to make it within their bodies without either vitamin B3 or tryptophan. Nicotinamide riboside was identified as a form of vitamin B3 in 2004.
The Proxmire Amendments were a series of legislation that prohibited the Food and Drug Administration from monitoring and limiting the potency of vitamins and minerals found in dietary supplements. The Proxmire Amendment also made it so that food supplements could not be classified as drugs, making their sale possible without a prescription from a doctor. According to a study done, "dietary supplements fall into the following categories: vitamins, minerals, herbs or other botanicals, amino acids, animal-derived products, hormones and hormone analogues, enzymes, and concentrates, metabolites, constituents, or extracts of these." They can be used by anyone wishing to purchase them as much or as little as they desire. Dietary supplements can be used to increase productivity, treat illness, help mental health such as depression and anxiety, enhancing mental abilities, building muscle, or losing weight, among many other uses. William Proxmire, a Senator for Wisconsin, was instrumental in influencing the passing the Proxmire Amendment. The Proxmire Amendment is also known as The Rogers-Proxmire Amendment of 1976, and The Vitamins and Minerals Amendments. This amendment became section 411 of the Federal Food, Drug, and Cosmetic Act.
