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This piglix contains articles or sub-piglix about Bodybuilding supplements
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Creatine supplements


Creatine supplements are athletic aids used to increase high-intensity athletic performance. Researchers have known of the use of creatine as an energy source by skeletal muscles since the middle of the 20th century. They were popularized as a performance-enhancing supplement beginning in the 1990s.

In 1912, Harvard University researchers Otto Folin and Willey Glover Denis found evidence that ingesting creatine can dramatically boost the creatine content of the muscle. In the late 1920s, after finding that the intramuscular stores of creatine can be increased by ingesting creatine in larger than normal amounts, scientists discovered creatine phosphate, and determined that creatine is a key player in the metabolism of skeletal muscle. The substance creatine is naturally formed in vertebrates.

While creatine's influence on physical performance has been well documented since the early twentieth century, it came into public view following the 1992 Olympics in Barcelona. An August 7, 1992 article in The Times reported that Linford Christie, the gold medal winner at 100 meters, had used creatine before the Olympics. An article in Bodybuilding Monthly named Sally Gunnell, who was the gold medalist in the 400-meter hurdles, as another creatine user. In addition, The Times also noted that 100 meter hurdler Colin Jackson began taking creatine before the Olympics.

At the time, low-potency creatine supplements were available in Britain, but creatine supplements designed for strength enhancement were not commercially available until 1993 when a company called Experimental and Applied Sciences (EAS) introduced the compound to the sports nutrition market under the name Phosphagen. Research performed thereafter demonstrated that the consumption of high glycemic carbohydrates in conjunction with creatine increases creatine muscle stores. In 1998, MuscleTech Research and Development launched Cell-Tech, the first creatine-carbohydrate-alpha lipoic acid supplement.Alpha lipoic acid has been demonstrated to enhance muscle phosphocreatine levels and total muscle creatine concentrations. This approach to creatine supplementation was supported by a study performed in 2003.



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Beta-Hydroxy beta-methylbutyric acid


imageβ-Hydroxy β-methylbutyric acid

β-Hydroxy β-methylbutyric acid (HMB), also known as β-hydroxy β-methylbutyrate, is a naturally produced substance in humans that is used as dietary supplement and as an ingredient in some medical food products. HMB can reduce the loss of lean body mass in individuals experiencing age-related muscle loss, but more research is needed to determine how it affects muscle strength and function in older adults. In healthy adults, supplementation with HMB has been shown to increase gains in muscle size, muscle strength, lean body mass, reduce skeletal muscle damage, and speed recovery from exercise. HMB produces these effects in part by stimulating the production of proteins and inhibiting the breakdown of proteins in muscle tissue.Medical reviews have found no issues with safety from long-term use as a dietary supplement in adults.

HMB is a metabolite of L-leucine that is produced in the body through oxidation of the ketoacid of L-leucine (α-ketoisocaproic acid). Since only a small fraction of L-leucine is metabolized into HMB, pharmacologically active concentrations of the compound in blood and muscle can only be achieved by supplementing HMB directly. A healthy adult produces approximately 0.3 grams per day, while supplemental HMB is usually taken in doses of 3–6 grams per day. HMB is sold worldwide as a dietary supplement at a cost of about US$30–50 per month when taking 3 grams per day. HMB is also contained in several nutritional products, including certain formulations of Ensure, Juven, and Myoplex. Small amounts of HMB are present in certain foods, such as alfalfa, asparagus, avocados, cauliflower, grapefruit, catfish, and milk.



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ECA stack


The ECA stack is a drug combination used in weight loss and as a stimulant. ECA is an initialism for ephedrine, caffeine, and aspirin, with variants of it including the EC stack, which removes the aspirin for those who can not tolerate it. Dietary supplements based on or including elements of ECA were popular through the 1990s and early 2000s, but the marketing of ephedra- or ephedrine-containing stimulant combinations for weight loss and bodybuilding is now restricted or illegal in the United States, Canada and Netherlands due to reports of heart attack, stroke, and death associated with these supplements.

While it was available as a supplement, ECA was marketed with claims that it would aid weight loss, improve athletic performance and increase "energy".

Placebo-controlled studies have consistently found ephedrine in combination with caffeine to be effective in promoting moderate fat loss in the already-obese. Herbal supplements containing Ephedra aka Ma Huang - with or without caffeine - have similarly been demonstrated to be effective without significantly increased risk of adverse effects in studies ranging from 8 weeks to 6 months in length. A meta-analysis combining results from all available studies estimated average weight loss of 1 kg/month more than placebo.

There is insufficient evidence to support use of ephedra for athletic performance.

Natural supplements that contain ephedra (aka Ma Huang) as an ephedrine substitute have been linked to cases of heart attack, stroke, and death in healthy young adults even when taken at the labeled dosage. Evidence of serious harm is based only on self-reports of uncontrolled use by supplement users; when EC has been used as medically prescribed or in controlled studies, evidence of cardiovascular risk has not been proven.

A 2003 meta-analysis of all available studies and case reports concluded that:

ephedrine- and ephedra-containing dietary supplements [...] have harms in terms of a 2- to 3-fold increase in psychiatric symptoms, autonomic symptoms, upper gastrointestinal symptoms, and heart palpitations. More serious adverse effects from ephedra use cannot be excluded at a rate less than 1.0 per thousand, and case reports raise the possibility that a causal relationship with serious adverse events may exist.



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Creatine-alpha ketoglutarate


Creatine-alpha-ketoglutarate is a salt formed from alpha-ketoglutaric acid (AKG) and creatine. It is sold as a fitness supplement; however, its effects are experimentally unproven.




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Met-Rx


MET-Rx is an American brand of nutritional supplements originally produced by Met-Rx, Inc., a California company started by Scott Connelly, and sold several times since.

The brand is best known as the product to pioneer a new category of bodybuilding supplements known as meal replacement powders or MRPs. It was also involved in the androstenedione controversy in the late 1990s.

Created by Scott Connelly, an anesthesiologist, the original MET-Rx product was intended to help prevent critically ill patients from losing muscle mass. Connelly's product was marketed in cooperation with Bill Phillips and the two began marketing to the bodybuilding and athletic communities, launching sales from the low hundreds of thousands to over $100 million annually. Connelly sold all interest in the company to Rexall Sundown for $108 million in 2000. MET-Rx is currently owned by NBTY.

The original MET-Rx meal replacement product came in two canisters—one labeled MET-Rx "base" and the other MET-Rx "plus". The instructions were to take two scoops of the base and one scoop of the plus and mix them in milk or water. As the product grew more popular, it was released as one formula combining the "base" and "plus" while removing the micellar casein component. As a result, the original METAMYOSYN blend is no longer used in MET-Rx products, as the current ingredients does not contain micellar casein.

MET-Rx's meal replacements and protein powders contain a proprietary blend (known as METAMYOSYN) which consists of ingredients such as whey protein, calcium caseinate, egg albumen and milk protein isolate, combined with maltodextrin, vitamins, minerals and added amino acids.



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5-Methyl-7-methoxyisoflavone


image5-Methyl-7-methoxyisoflavone

5-Methyl-7-methoxyisoflavone, commonly referred to simply as methoxyisoflavone, is a chemical compound marketed as a bodybuilding supplement. However, there is no meaningful clinical evidence to support its usefulness. A study published in 2006 examined the effect of methoxyflavone on training adaptations and markers of muscle anabolism and catabolism. No measurable effects were observed in athletic performance or in levels of testosterone and cortisol.

Consumption of 5-methyl-7-methoxyisoflavone can produce false positive results in urinary tests for cannabinoid use.



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Methylhexanamine


imageMethylhexanamine

Methylhexanamine (trade names Forthane, Geranamine) or methylhexamine, commonly known as 1,3-dimethylamylamine (1,3-DMAA) or simply dimethylamylamine (DMAA), is an indirect sympathomimetic drug invented and developed by Eli Lilly and Company and marketed as an inhaled nasal decongestant from 1944 until it was voluntarily withdrawn from the market in 1983.

Since 2006 methylhexanamine has been sold extensively under many names as a stimulant or energy-boosting dietary supplement under the claim that it is similar to certain compounds found in geraniums, but its safety has been questioned as a number of adverse events and at least five deaths have been associated with methylhexanamine-containing supplements. It is banned by many sports authorities and governmental agencies.

In April 1944, Eli Lilly and Company introduced methylhexanamine under the brand name Forthane as an inhaled nasal decongestant; Lilly voluntarily withdrew methylhexanamine from the market in 1983. The compound is an aliphatic amine; the pharmaceutical industry had a strong interest in compounds in this class as nasal decongestants in the early 20th century, which led to methylhexanamine and four other similar compounds being brought to market for that use: tuaminoheptane, octin, oenethyl, and propylhexedrine; octin and oenethyl were eventually approved for use in keeping blood pressure sufficiently high for patients under anesthesia.

Patrick Arnold reintroduced methylhexanamine in 2006 as a dietary supplement, after the final ban of ephedrine in the United States in 2005. Arnold introduced it under the trademarked name Geranamine, a name held by his company, Proviant Technologies. A large number of supplements focusing on fat loss and workout energy (thermogenic or general-purpose stimulants) used the ingredient in concert with other substances such as caffeine, a combination similar to the combination of ephedrine and caffeine.



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Modjo (Energy supplement)


Modjo is an American brand of functional energy supplements and beverages, manufactured by Cellutions LLC. Modjolife is the term of a lifestyle Cellutions represents through Modjo. In 2007, Modjo was launched first in Puerto Rico and in 2008 it was introduced in the US.

Modjo Synergy aims to boost mental and physical performance and is also a hangover prevention product that contains antioxidants and vitamins, representing a lifestyle; "Living the Modjolife", according to the motto of the brand.

Modjo is available in pouches (two caplets / one serving), tins (four caplets / two servings) a functional beverage in different tastes and a shot.



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Phenibut


imagePhenibut

Phenibut (fenibut, phenybut; brand names Noofen and Citrocard), contracted from β-phenyl-γ-aminobutyric acid (β-phenyl-GABA), is a central depressant and analog of the inhibitory neurotransmitter γ-aminobutyric acid (GABA), or a GABA analogue. The addition of a phenyl ring allows phenibut to cross the blood–brain barrier. Phenibut was developed in the Soviet Union in the 1960s, and has since been used there as a pharmaceutical drug to treat a wide range of ailments, including posttraumatic stress disorder, anxiety, depression, asthenia, insomnia, alcoholism, stuttering, and vestibular disorders, among other conditions. In some other parts of the world, phenibut is not approved for clinical use, and is instead sold as a nutritional supplement. It has been reported by some researchers to possess nootropic actions for its ability to improve neurological functions, but others have not observed these effects. It is generally accepted that phenibut has anxiolytic effects in both animal models and in humans.

Phenibut is a close structural analogue of GABA, as well as of baclofen (β-(4-chlorophenyl)-GABA), pregabalin (β-isobutyl-GABA), and GABOB (β-hydroxy-GABA). Phenibut is believed to act as a selective GABAB receptor agonist; studies are conflicting as to whether phenibut also acts as a GABAA receptor agonist. More recently, phenibut has been found to act preferentially as a blocker of α2δ subunit-containing voltage-gated calcium channels, similarly to gabapentin and pregabalin. As such, by definition, phenibut is a gabapentinoid.



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Protein bar


imageProtein bars

Protein bars are food bars that contain a high proportion of protein.

Protein bars are targeted to people who primarily want a source of protein that doesn't need preparation (unless homemade). There are different kinds of food bars to fill different purposes. Energy bars provide the majority of their food energy (calories) in carbohydrate form. Meal replacement bars are intended to replace the variety of nutrients in a meal. Protein bars are usually lower in carbs than energy bars, lower in vitamins and dietary minerals than meal replacement bars, and significantly higher in protein than either.

Protein bars are mainly used by athletes or exercise enthusiasts for muscle building.

In addition to other nutrients, the human body needs protein to build muscles. In the fitness and medical fields it is generally accepted that protein after exercise helps build the muscles used. Whey is one of the most often used proteins for protein bars for sports reasons. Other protein sources include egg albumen protein and casein. Vegan protein bars contain only plant proteins from sources like peas, brown rice, hemp, and soybeans.

Protein bars may contain high levels of sugar. Sugar from natural sources such as fruit are thought to be healthier after workouts than other sugars, and many health experts argue that sugar from fruit improves athletic performance.

In order to keep calories and carbohydrate content relatively low, many protein bars contain sugar alcohol as sweetener. In larger quantities, like many other incompletely digestible substances, sugar alcohols can cause bloating, diarrhea and flatulence.

In France special regulation is present for hyperprotéiné bars.



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