If you have been reading about Creatine hydrate and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Last reviewed on 2026-06-14. Where a claim depends on a specific study, the study is described rather than over-claimed.
Storage recommendations generally emphasize a cool, dry place away from direct sunlight and strong oxidizers. Sealed containers limit humidity exchange, which helps prevent clumping and gradual conversion to creatinine. Long-term stability studies usually monitor appearance, moisture, and purity at intervals under defined temperature and humidity conditions. Accelerated tests at elevated temperature can reveal degradation pathways, but they do not perfectly predict room-temperature shelf life. Questions remain about how much creatinine formation is acceptable in different product categories and how packaging choices affect that rate over time.
Commercial creatine monohydrate is typically manufactured through chemical synthesis, often starting from sarcosine and cyanamide. The resulting material is crystallized, washed, and dried to a specified hydrate content. Finished lots are tested for identity, purity, moisture, and heavy metals before release. Because the compound can cyclize to creatinine under heat or prolonged storage in solution, manufacturers control temperature and humidity during processing. The solid itself is relatively stable when kept dry and sealed, but moisture uptake can cause caking and complicate accurate assay.
Analytical laboratories commonly identify creatine monohydrate by high-performance liquid chromatography with ultraviolet detection, often after dissolving the sample in water or dilute acid. Ion-exchange or reversed-phase columns separate creatine from creatinine and related guanidino compounds. Nitrogen content can be checked by Kjeldahl or combustion methods, while moisture is measured by Karl Fischer titration or loss on drying. These techniques give complementary views: chromatographic purity addresses related substances, whereas moisture and elemental data confirm hydrate stoichiometry. No single test defines quality by itself; a combination is used in specifications.
In aqueous solution, creatine monohydrate exists mainly as a zwitterion, carrying both a positive guanidinium charge and a negative carboxylate charge. This charge separation raises water solubility relative to many neutral organic solids and helps explain its behavior in analytical separations. The monohydrate can lose its water of crystallization under sustained heat or low humidity, converting toward anhydrous creatine. Such transitions matter for mass balance calculations because the hydrate contributes water mass that is not part of the active creatine molecule.
The term creatine monohydrate is often shortened to creatine in casual usage, though other creatine forms exist, including citrate, nitrate, and hydrochloride salts. These alternative forms differ in solubility, pH behavior, and the amount of creatine delivered per unit mass. Regulatory categories vary by country: some jurisdictions treat it as a food ingredient, while others place it under supplement or drug frameworks depending on claims and presentation. Standard reference texts list it as a naturally occurring nitrogenous organic acid rather than a vitamin or mineral.
Creatine monohydrate is a crystalline organic compound formed from creatine and water in a one-to-one ratio. It belongs to the guanidino family and contains a methylated guanidine group attached to an acetate-like chain. The solid is commonly described as a white, odorless powder with a mildly bitter taste. Its molecular formula is C4H11N3O3·H2O, and the hydrated form is the most widely traded grade. The compound occurs naturally in vertebrate muscle and brain tissue, where it participates in rapid energy buffering.
| Property | Value | Notes |
|---|---|---|
| Common analytical method | HPLC-UV | Separation from creatinine and related compounds. |
| Moisture content | Typically 12% theoretical | Monohydrate stoichiometry corresponds to about 12% water by mass. |
| Typical storage temperature | 15–25 °C | Cool, dry, sealed conditions limit moisture uptake. |
| Degradation marker | Creatinine | Formed by cyclization, especially in solution or with heat. |
| Solubility class | Moderately soluble in water | Solubility rises with temperature and varies with pH. |
Solid creatine monohydrate is generally stable when kept dry and protected from extremes of heat and humidity. In the presence of moisture, it can gradually convert to creatinine, a cyclic dehydration product that has little value for phosphocreatine synthesis. Elevated temperatures and acidic conditions accelerate this conversion in solution. Because the reaction is slow in cool, dry storage, typical shelf lives are measured in years rather than weeks. Packaging that limits moisture and oxygen exposure helps maintain purity.
Recommended storage usually involves a sealed container kept at room temperature, away from direct sunlight and moisture. High humidity can cause caking, which changes flow properties and may complicate accurate weighing. Repeated opening of containers exposes the powder to air and moisture, so smaller aliquots can reduce handling effects. Storage temperature ranges are not absolute requirements; they reflect conditions that slow degradation and preserve consistent physical characteristics. Clean, dry tools help prevent contamination during sampling.
In the body, creatine is synthesized from arginine, glycine, and methionine, mainly in the liver and kidneys, and is also obtained from foods such as meat and fish. About 95% of body creatine is stored in skeletal muscle, where a fraction is phosphorylated to phosphocreatine. Phosphocreatine serves as a rapid reserve of high-energy phosphate for short bursts of ATP regeneration. The monohydrate form supplies creatine after dissolution and absorption, but it is not itself the active phosphorylated species.
Creatine was first identified in skeletal muscle extracts in the nineteenth century, and its role in phosphagen energy buffering was clarified in the twentieth century. The monohydrate salt became widely studied after methods for inexpensive synthesis and crystallization were developed. Modern research examines its effects on muscle energetics, recovery, and cognitive performance under specific conditions. Findings vary with population, exercise protocol, baseline creatine status, and measurement method. Studies often compare supplementation with placebo during controlled training or testing schedules.
Creatine monohydrate is a hydrated form of creatine, a nitrogen-containing compound involved in cellular energy metabolism. Its molecular formula is C4H9N3O2·H2O, with a molar mass around 149.15 g/mol. The monohydrate is the most common solid form used in research and commercial settings because it crystallizes readily and remains stable under ordinary conditions. The term monohydrate indicates one water molecule per creatine molecule in the crystal lattice. It appears as a white crystalline powder with low odor.
Handling practices aim to limit moisture uptake and thermal exposure. Containers should stay closed when not in use, and storage areas should avoid direct sunlight, strong heat, and high humidity. Caking can occur when powder absorbs water, even if the creatine itself has not fully degraded. Aqueous stock solutions are best prepared fresh when needed because they are less stable than the solid. Open questions include how different excipients, packaging materials, and climate conditions affect long-term stability across global supply chains.
Solid creatine monohydrate is relatively stable when kept dry and sealed, but heat and moisture accelerate its conversion to creatinine. This degradation involves intramolecular cyclization, a process that removes water and forms a less useful compound for phosphocreatine metabolism. Powder stored under cool, dry conditions can remain within specification for extended periods, though exact shelf life depends on packaging, humidity, and initial purity. Aqueous solutions degrade faster than dry powder, with pH and temperature influencing the rate. Because degradation is gradual, analytical testing is used to confirm potency at manufacture and during stability studies.
Quality control for creatine monohydrate typically combines identity, assay, and impurity tests. High-performance liquid chromatography with ultraviolet detection is common for separating creatine from creatinine and related substances. Nuclear magnetic resonance and infrared spectroscopy can confirm molecular structure, while titration may assess acid-base content. Moisture content, heavy metals, residual solvents, and microbial limits are checked according to applicable standards. These tests help distinguish compliant material from powders that have degraded, been diluted, or contain manufacturing residues.
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.
Monsanto did not take up the challenge but stated that GM food did indeed undergo safety assessments that "are more rigorous and thorough than assessments of any other food crop in history". In 2016, Ayyadurai promised to donate $10 million to Hillary Clinton's presidential campaign if she could disprove his research.
=== The method === It has been shown through experimentation, that increasing the viral count (or level of activity) of a sample by a factor of 104 or 105 of the original will only change the virus removal/inactivation ratios by one order of magnitude . From this knowledge, spiking studies have been created in which the virus number (or level of activation) is increased or "spiked" by a factor of 104 or 105 of the original sample. This new high number or level of activity is then run through the process stream and purified. The number or level of activity is taken at the beginning and at the end of the process stream and used in the calculation of Reduction Factor.
=== Other South African wins (39) === 1955 East Rand Open 1956 East Rand Open, South African Open 1957 Western Province Open 1958 Natal Open 1959 East Rand Open, Natal Open, South African Professional Match Play Championship, Transvaal Open 1960 Natal Open, South African Masters, Transvaal Open, Western Province Open, South African Open 1961 Transvaal Open (Dec.) 1962 Transvaal Open 1963 Liquid Air Tournament, Richelieu Grand Prix (Cape Town), Richelieu Grand Prix (Johannesburg), Sponsored 5000 1964 South African Masters 1965 South African Open 1966 Natal Open, Transvaal Open, South African Open 1967 South African Masters, South African Open 1968 Natal Open, Western Province Open, South African Open 1969 South African PGA Championship, South African Open 1971 General Motors Open, South African Masters, Western Province Open 1974 Rand International Open 1986 Nissan Skins Game 1988 Nissan Skins Game 1991 Nissan Skins Game
== Activity == Given its half-life, the radioactive activity of a gram of 60Co is close to 42 TBq (1,100 Ci). The absorbed dose constant, used in calculations of gamma-ray exposure, is related to the decay energy and time. For 60Co it is equal to 0.35 mSv/(GBq h) at one meter from the source. This allows calculation of the equivalent dose, which depends on distance and activity - for example, 2.8 GBq or 60 μg of 60Co, generates a dose of 1 mSv at 1 meter away, within an hour. Test sources, such as those used for school experiments, have an activity of <100 kBq. Devices for nondestructive material testing use sources with activities of 1 TBq and more. The decay energy of cobalt-60 amounts to about 26 watts per gram, about 40 times larger (by mass) than that of e.g. 238Pu but still not very significant for practical sources.
Sources: en.wikipedia.org
Taha Othman Ishaq (or Osman), a lawyer and member of the FFC negotiating committee, declined his nomination by the FFC to the Sovereignty Council on the grounds that the FFC alliance had earlier agreed that members of the negotiating committee should not become members of the Sovereignty Council. Raja Nicola was the civilian member of the Sovereignty Council mutually chosen by the FFC and TMC. The choice of Nicola, as a member of the Sudanese Copt community, is seen as a symbol of respect for diversity, in particular to Sudanese Christians. On 4 February 2021, al-Burhan issued a decree to add three new members to the Council. The new members are Sudanese Revolutionary Front leader El Hadi Idris Yahya, Sudan People's Liberation Movement-North leader Malik Agar, and Sudan Liberation Movement for Justice-Karbino leader El Tahrir Abubakr Hajar.
=== Industrial sources === Mass production of EGT can be achieved by microbial fermentation, i.e. culturing of microbes. The highest productivities are derived from microbes that have undergone genetically engineering to overexpress the biosynthetic pathway, either a native version (if the microbe natively makes ergothioneine) or foreign (transgenic) version. Escherichia coli and Saccharomyces cerevisiae (baker's yeast), two species commonly used in bio-engineering but unable to natively produce EGT, can reach EGT concentrations of 5400 mg/L and 2390 mg/L respectively for their culture media: around a hundred times of what non-modified microbes can achieve. In 2025, an even higher concentration of 7200 mg/L was achieved with E. coli without requiring the feeding of expensive methionine (methyl source) or cysteine by adding genes to have the bacteria make its own.
On June 11, 2026, and in preparation for the 2026 FIFA World Cup, NASA conducted experiments aboard the International Space Station using soccer balls to study how mass distribution and embedded sensor technology affect ball motion and stability in microgravity. According to NASA, the research contributed to the development and evaluation of technologies used in the 2026 FIFA World Cup official match ball. The Trionda Final was announced by Adidas on July 6, 2026, as the official match ball to be used for the semifinals, match for third place, and final. It features a gold, black, and red color scheme, with the host cities' names printed on it.
Sources: en.wikipedia.org
=== Anti-inflammatory effects === The role of inflammation and the immune system in depression has been extensively studied. The evidence supporting this link has been shown in numerous studies over the past decade. Nationwide studies and meta-analyses of smaller cohort studies have uncovered a correlation between pre-existing inflammatory conditions such as type 1 diabetes, rheumatoid arthritis (RA), or hepatitis, and an increased risk of depression. Data also shows that using pro-inflammatory agents in the treatment of diseases like melanoma can lead to depression. Several meta-analytical studies have found increased levels of proinflammatory cytokines and chemokines in depressed patients. This link has led scientists to investigate the effects of antidepressants on the immune system. SSRIs were originally invented to increase levels of available serotonin in the extracellular spaces. However, the delayed response between when patients first begin SSRI treatment to when they see effects has led scientists to believe that other molecules are involved in the efficacy of these drugs. To investigate the apparent anti-inflammatory effects of SSRIs, both Kohler et al. and Więdłocha et al. conducted meta-analyses which have shown that after antidepressant treatment the levels of cytokines associated with inflammation are decreased. A large cohort study conducted by researchers in the Netherlands investigated the association between depressive disorders, symptoms, and antidepressants with inflammation.
At a hearing at the Old Bailey, Nathan Gill, the former leader of Reform UK in Wales, pleads guilty to eight counts of bribery relating to a pro-Russian influence campaign in the European Parliament during 2018 and 2019. 21 November – At the Old Bailey, Nathan Gill, former UKIP and later Reform UK leader in Wales, is sentenced to 10 and a half years in prison for accepting Russian bribes while in the European Parliament during 2018 and 2019. Former cabinet minister Michael Gove apologises on behalf of the UK government and Conservative Party for "mistakes made" during the COVID-19 pandemic. Iqbal Mohamed becomes the second MP to announce they are leaving the new left-wing party provisionally known as Your Party. 24 November – Richard Dannatt and David Evans are scheduled to be suspended from the House of Lords for breaching parliamentary rules, including providing parliamentary services in return for "payment or reward". Addressing allegations made about him from his schooldays, Farage says he has "never directly racially abused anybody". Addressing his party's potential links to Russia, Farage says that Reform does not have the resources to investigate the matter. 26 November – The Chancellor of the Exchequer, Rachel Reeves delivers the 2025 United Kingdom budget. 27 November – Former Brexit Party MEP David Coburn, who is named in a series of WhatsApp messages, rejects allegations he participated in a pro-Russian influence campaign in the European Parliament.
A mendelian randomization trial in humans found that a 1-standard deviation increase in genetically proxied LDL-C levels was associated with 1.2 years lower lifespan. This presents with an interesting candidate for increasing life span in select populations with such potentially deleterious mutations, since atherosclerosis is one of the leading causes of mortality through causing potentially fatal atherosclerotic cardiovascular disease. Considering many LDL-C lowering drugs are already approved to reduce mortality in select populations, there is certainly not a paucity of research.
E0: normal ear E1: Minor hypoplasia and cupping with all structures present E2: Absence of external auditory canal with variable hypoplasia of the auricle E3: Malposition of the lobule with absent auricle, lobular remnant usually inferior anteriorly displaced Facial nerve
Sources: en.wikipedia.org
Laboratories typically combine chromatographic separation with moisture and elemental analysis. High-performance liquid chromatography can quantify creatine and related substances such as creatinine. Moisture methods confirm the hydrate form and help detect excess water.
The dry crystalline solid is relatively stable when protected from moisture and heat. In solution, it can convert to creatinine over time, especially at higher temperatures. Storage conditions and product form influence the rate of change.
Moisture uptake can cause particles to stick together, particularly in humid conditions or after opening a container. Clumping does not necessarily mean the creatine has degraded. It can make accurate measuring more difficult, so dry storage and sealed packaging are used.
In common usage, yes, but technically creatine monohydrate is one specific hydrated salt form. Other creatine forms exist and differ in composition and properties. The monohydrate is the most studied and most widely available grade.