creatinine is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Last reviewed on 2026-06-06. Where a claim depends on a specific study, the study is described rather than over-claimed.
In animals, creatine is synthesized mainly in liver, kidney, and pancreas from arginine, glycine, and methionine. The first committed step transfers a guanidino group from arginine to glycine, forming guanidinoacetate. Subsequent methylation by S-adenosylmethionine yields creatine. Dietary sources include meat and fish; endogenous synthesis supplies part of the body pool. Most creatine is stored in skeletal muscle, where it is converted to phosphocreatine and participates in rapid regeneration of adenosine triphosphate during short, intense activity.
Commercial creatine products appear in several forms, including monohydrate, hydrochloride, citrate, nitrate, and ethyl ester. Creatine monohydrate is the most studied form and serves as a reference material in comparative research. Different forms vary in solubility, pH, and water content, but they share creatine as the active moiety after dissolution. Claims that one form is uniformly superior remain debated, and study designs often differ in population, exercise protocol, and outcome measures. Purity and hydration state are central to interpreting product labels.
Creatine monohydrate is the hydrated form of creatine, a nitrogen-containing organic acid involved in cellular energy transfer. Its molecular formula is C4H11N3O3, and it consists of creatine plus one water molecule in the crystal lattice. The anhydrous base, creatine, has the formula C4H9N3O2. The compound appears as a white, odorless, crystalline powder and is classified as a guanidine derivative. It is distinct from creatinine, a breakdown product measured in clinical chemistry.
Regulatory status varies by country. In the United States, creatine monohydrate is sold as a dietary supplement ingredient, while in the European Union it is placed on the market as a food supplement component. Some jurisdictions have established purity monographs or permitted health claims, while others treat it as a novel food or require notification. Product labels may state the amount of creatine monohydrate or the equivalent creatine content, and the two figures can differ. Independent testing programs sometimes check identity, potency, and contaminant limits.
Creatine monohydrate is stable under dry, cool conditions but can degrade when exposed to moisture and heat. In solution, it undergoes hydrolysis to creatinine, a cyclic derivative with little role in phosphagen energy transfer. The rate of conversion increases with temperature, storage time, and acidic or alkaline pH. Solid material kept in a sealed container at room temperature generally retains its composition for extended periods. Moisture uptake is a primary concern because it can accelerate breakdown and caking.
| Property | Value | Notes |
|---|---|---|
| Chemical formula (monohydrate) | C4H11N3O3 | Includes one water molecule per creatine unit. |
| Molecular weight | 149.15 g/mol | Calculated for the monohydrate; anhydrous creatine is 131.13 g/mol. |
| Appearance | White crystalline powder | Odorless; particle size can vary by manufacturing. |
| CAS Registry Number | 6020-87-7 | Identifies creatine monohydrate; creatine base is 57-00-1. |
| Common synonyms | Creatine hydrate; methylguanidoacetic acid monohydrate | Naming varies by registry and supplier. |
Creatine is synthesized endogenously in humans, mainly in the liver, kidney, and pancreas, from the amino acids arginine, glycine, and methionine. Skeletal muscle stores much of the body's creatine, where it participates in the phosphocreatine system that buffers adenosine triphosphate during short, intense contractions. Dietary sources include meat and fish, so omnivorous diets provide additional creatine beyond endogenous production. Supplemental creatine monohydrate supplies the same molecule found in food and tissues, not a distinct drug or hormone. Research interest centers on its role in cellular energy transfer and its effects on muscle and other tissues.
Several creatine forms are sold, including monohydrate, anhydrous, hydrochloride, nitrate, citrate, and blends. Once dissolved, these forms deliver creatine, but they differ in molar mass, solubility, counterions, and water content. Creatine monohydrate has the largest body of published human data among these forms. Questions remain about whether any alternative form offers meaningful advantages in absorption, tolerability, or tissue uptake under practical conditions. The hydrate form's lower creatine content by mass is a compositional fact, not a statement about effectiveness.
=== CBRN equipment === Light Anti-Gas Respirator - Issued until the arrival of the S6 respirator. S6 NBC Respirator - Issued from 1966 S10 NBC Respirator - Issued from 1986 No. 1 Mk 1-4 Protective Suit
=== Russia === Russia re-elected Vladimir Putin as the president in 2012 Russian presidential election. The election was marred by claims of fraud, contributing to the 2011–2013 Russian protests. Under Putin, Russia engaged in a more aggressive foreign policy, with the 2014 Annexation of Crimea and intervention in Ukraine following the 2014 Ukrainian revolution, the 2015 intervention in the Syrian Civil War, and interference in the 2016 United States elections.
== Development and release == Garry's Mod was created by the programmer Garry Newman. He started developing games under the studio name Facepunch Studios after dropping out of college, at the time out of his parents' house. He did this as a hobby, simultaneous to his occupation as a PHP programmer for a dating website. He was later fired when he launched his own dating website. While developing his first game, Facewound, Garry's Mod became a side-project of his as a mod for the Source game engine and, principally, the game Half-Life 2. Newman soon found more enjoyment in developing Garry's Mod than in maintaining Facewound, so development on Facewound was mostly halted (and put on indefinite hiatus in 2004) for him to focus on Garry's Mod. He stated that, at the time, his skills in computer programming were not advanced enough to create a full Source-based game and he resorted to the mod format. The first iteration of the mod, version 1, was released on 24 December 2004. Initial feedback was polarised, with some players criticising the mod for its similarity to an existing mod, JBMod. However, the increasing positive reception led Newman to continue development. Newman did not recognise that the game was gaining in popularity until he set up an online forum for it. Through 2004 and 2005, Newman released several updated versions of Garry's Mod, adding new features and culminating in version 9.0.4 on 27 November 2005. Newman began work on remaking the mod into a standalone game with assistance from community members.
=== Use in drug-induced neutropenia === Neutropenia can be a severe side effect of clozapine, an antipsychotic medication in the treatment of schizophrenia. G-CSF can restore neutrophil count. Following a return to baseline after stopping the drug, it may sometimes be safely rechallenged with the added use of G-CSF.
Like other large white European flock guardian dogs such as the Kuvasz, the Pastore Maremmano and the Pyrenean Mountain Dog, the Tatra Shepherd Dog is believed to derive from dogs brought from Asia by nomadic pastoralists. The first show for these dogs was held in 1937. Because they were in isolated areas of the mountains, a small number of them survived the events of the Second World War. By 1954, when the first post-War show was organised, about 120 examples had been located; once the Związek Kynologiczny w Polsce, the Polish kennel club, was reconstituted after the War, shows were held in Kraków. The breed was fully recognised by the Fédération Cynologique Internationale in 1963 or 1967. It is no longer found only its area of origin, but is distributed through much of Poland; some are in other countries. The stud-book is open – unregistered dogs judged to be typical of the breed may be added to it. Approximately 300 puppies are born per year, in about 50 litters. Total annual new registrations with the kennel club were 473 in 2011 and 383 in 2012. Not all dogs of this type are registered in the stud-book. Currently, the AKC does not recognise the breed.
Sources: en.wikipedia.org
=== Alternative remedies === Examples include: Ackee fruit, Bajiaolian, Camphor, Copaltra, Cycasin, Garcinia, Kava leaves, pyrrolizidine alkaloids, Horse chestnut leaves, Valerian, Comfrey. Chinese herbal remedies: Jin Bu Huan, Ephedra, Shou Wu Pian, Bai Xian Pi.
Physically, thinking of landscapes in terms of visualizable potential or total energy surfaces simply with maxima, saddle points, minima, and funnels, rather like geographic landscapes, is perhaps a little misleading. The relevant description is really a high-dimensional phase space in which manifolds might take a variety of more complicated topological forms. The unfolded polypeptide chain begins at the top of the funnel where it may assume the largest number of unfolded variations and is in its highest energy state. Energy landscapes such as these indicate that there are a large number of initial possibilities, but only a single native state is possible; however, it does not reveal the numerous folding pathways that are possible. A different molecule of the same exact protein may be able to follow marginally different folding pathways, seeking different lower energy intermediates, as long as the same native structure is reached. Different pathways may have different frequencies of utilization depending on the thermodynamic favorability of each pathway. This means that if one pathway is found to be more thermodynamically favorable than another, it is likely to be used more frequently in the pursuit of the native structure. As the protein begins to fold and assume its various conformations, it always seeks a more thermodynamically favorable structure than before and thus continues through the energy funnel.
In Mexico, the first 7-Eleven store opened in 1976 in Monterrey in association with Grupo Chapa (now Iconn) and 7-Eleven, Inc. under the name Super 7. In 1995, Super 7 was renamed to 7-Eleven, which now has 1,835 stores in several areas of the country, making it the second-largest convenience store chain in the country, between Oxxo and Circle K. When stores are located within classically designed buildings (such as in Centro Histórico buildings) or important landmarks, the storefront logo is displayed in monochrome with gold or silver lettering.
Great Britain, Ireland, Germany, the Netherlands, Sweden, and Denmark have produced a number of bog bodies, mummies of people deposited in sphagnum bogs, apparently as a result of murder or ritual sacrifices. In such cases, the acidity of the water, low temperature and lack of oxygen combined to tan the body's skin and soft tissues. The skeleton typically disintegrates over time. Such mummies are remarkably well preserved on emerging from the bog, with skin and internal organs intact; it is even possible to determine the decedent's last meal by examining stomach contents. The Haraldskær Woman was discovered by labourers in a bog in Jutland in 1835. She was erroneously identified as an early medieval Danish queen, and for that reason was placed in a royal sarcophagus at the Saint Nicolai Church, Vejle, where she currently remains. Another bog body, also from Denmark, known as the Tollund Man was discovered in 1950. The corpse was noted for its excellent preservation of the face and feet, which appeared as if the man had recently died. Only the head of Tollund Man remains, due to the decomposition of the rest of his body, which was not preserved along with the head.
Sources: en.wikipedia.org
Creatine is the base compound, while creatine monohydrate includes one water molecule per creatine molecule in its crystal structure. The monohydrate form is common in supplements and analytical standards. The body uses creatine itself after the water is removed or dissociated.
Yes. Meat, fish, and other animal tissues contain creatine. Cooking can convert some creatine to creatinine, which has no role in phosphocreatine energy buffering. Plant foods contain little or no creatine.
Creatinine is a cyclic breakdown product formed from creatine and phosphocreatine. It is filtered by the kidneys and commonly measured in blood and urine as a marker of renal function. Creatine monohydrate is a supplement ingredient and research chemical, not the same molecule.
A sealed container at room temperature, away from moisture and direct heat, is suitable for most solid material. Keeping the lid closed limits water uptake and caking. Long-term storage in a refrigerator is not necessary if the powder remains dry.