This is a working overview of Creatine hydrate, written for readers who want more than a one-paragraph summary but less than a textbook.
Reviewed 2025-07-31. Anything still debated is marked as such rather than presented as settled.
In chemical terms, creatine monohydrate is often described as N-(aminoiminomethyl)-N-methylglycine monohydrate, though nomenclature varies. Its solid state consists of zwitterionic creatine molecules linked with water through hydrogen bonding. The compound dissolves in water, but dissolution rate depends on particle size, temperature, and agitation. Once dissolved, the hydrate water becomes part of the solvent, leaving free creatine in solution. The monohydrate is not the same as creatine anhydrous, which lacks the water of crystallization and has a higher creatine fraction by mass.
Commercial creatine monohydrate is typically a white to off-white powder with low odor. It is commonly sold as a fine powder, micronized powder, or larger crystals, but these are physical forms of the same chemical. Purity grades vary, and products may contain small amounts of related substances such as creatinine, dicyandiamide, or moisture. The monohydrate is often selected for supplements and research because its production is well established and its behavior in water is predictable. Analytical certificates usually report assay, loss on drying, and heavy metals.
Creatine monohydrate is a crystalline compound formed from creatine and one water molecule in its solid lattice. Creatine itself is a nitrogen-containing organic acid involved in energy transfer in muscle and other tissues. The monohydrate form is the most common solid form used in research and commercial products because it is stable and easy to handle. The term "monohydrate" refers to the fixed one-to-one ratio of water to creatine in the crystal, not to moisture content. This distinction matters when comparing labels or calculating creatine content.
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.
Analytical laboratories commonly use high-performance liquid chromatography to separate creatine from creatinine and related impurities. Ion chromatography, nuclear magnetic resonance, and titration assays can also quantify the compound. Water content is measured by Karl Fischer titration or loss on drying, because the monohydrate has a defined theoretical water fraction. Particle size, bulk density, and flowability are physical properties that affect blending and capsule filling. These measurements support quality control and help verify that a lot matches its specification.
| Property | Value | Notes |
|---|---|---|
| Chemical name | N-(aminoiminomethyl)-N-methylglycine monohydrate | Nomenclature varies across sources. |
| Common synonyms | Creatine hydrate; creatine monohydrate | “Monohydrate” specifies one water per creatine. |
| Appearance | White to off-white crystalline powder | Particle size and flowability vary by grade. |
| Solubility class | Soluble in water; slightly soluble in ethanol | Dissolution increases with temperature and stirring. |
| Typical storage | Tightly closed container at 15–25 °C | Protect from moisture and excessive heat. |
Identity and purity are commonly assessed by high-performance liquid chromatography, often with ultraviolet detection, and by spectroscopic techniques such as infrared or nuclear magnetic resonance. These methods can distinguish creatine from creatinine and detect related impurities. Moisture content may be measured by Karl Fischer titration or loss on drying. Particle size, bulk density, and heavy metal limits are additional quality parameters. Not every product is tested by every method, so specifications depend on the intended use and regulatory framework.
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.
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.
Creatine monohydrate is a crystalline compound formed when one molecule of creatine associates with one molecule of water in the solid lattice. Its molecular formula is C4H11N3O3, and its molar mass is about 149.15 grams per mole. The material appears as a white, odorless powder that dissolves sparingly in water at room temperature. The monohydrate designation distinguishes it from anhydrous creatine, which lacks the bound water and has a lower molar mass. This hydrate is the most common commercial form of creatine used in nutritional and research settings.
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.
Creatine monohydrate is sold as a dietary ingredient in some countries and as a food supplement in others. Regulatory frameworks vary, so purity limits, labeling rules, and permitted claims are not globally uniform. In the United States, it falls under dietary supplement rules, whereas the European Union treats it as a food supplement ingredient. Pharmacopeial monographs, where they exist, can provide public quality standards, but not every product is required to meet them. Questions about long-term effects and patterns of use remain areas of active study rather than settled regulatory findings.
Solid creatine monohydrate is generally stable when kept cool and dry, but it can hydrolyze to creatinine over time. Moisture, heat, and acidic conditions accelerate this conversion, which reduces assay values and changes the material's properties. Creatinine is a cyclic dehydration product that is also a normal human metabolite, so its presence in a sample is not necessarily a health concern by itself. In quality testing, creatinine is monitored as a marker of degradation and purity.
Identity and purity are assessed with several complementary methods. High-performance liquid chromatography can separate creatine from creatinine and related impurities, often with ultraviolet detection. Nuclear magnetic resonance and infrared spectroscopy provide structural confirmation, while Karl Fischer titration measures water content. Elemental analysis and mass spectrometry may be used for additional confirmation, especially in research or forensic settings. No single method captures every quality attribute, so laboratories typically combine results and compare them against a specification.
=== Jonathan: The Rollerblade Bully === First aired 12 April 2009 Mayhem Miller helps Sergio and Thomas with Jonathan, a self-proclaimed "aggressive in-line skater," who thinks he has the right to pick on weaker people in the neighborhood, by putting him in the ring with MMA champion Jake Shields to teach him a lesson he won't soon forget.
=== Thiazole-Orange-Based DNA Dyes === Thiazole Orange derivatives, such as SYBR Safe, SYBR Green, SYBR Gold, Pico Green, SYTO-16, SYTO-9 and TOPhBu are special cyanine dyes commonly used as fluorescent DNA sensors. The ability of the dyes to detect DNA at low concentrations was evaluated using two metrics: absolute fluorescence enhancement (AFE) and relative fluorescence enhancement (RFE).
== History == The earliest written descriptions of thiamine deficiency are from ancient China in the context of Chinese medicine. One of the earliest is by Ge Hong in his book Zhou hou bei ji fang (Emergency Formulas to Keep up Your Sleeve) written sometime during the third century. Hong called the illness by the name jiao qi, which can be interpreted as "foot qi". He described the symptoms to include swelling, weakness, and numbness of the feet. He also acknowledged that the illness could be deadly, and claimed that it could be cured by eating certain foods, such as fermented soybeans in wine. Better known examples of early descriptions of "foot qi" are by Chao Yuanfang (who lived during 550–630) in his book Zhu bing yuan hou lun (Sources and Symptoms of All Diseases) and by Sun Simiao (581–682) in his book Bei ji qian jin yao fang (Essential Emergency Formulas Worth a Thousand in Gold). In the mid-19th century, interest in beriberi steadily rose as the disease became more noticeable with changes in diet in East and Southeast Asia. A steady uptick occurred in medical publications, reaching 181 publications from 1880 and 1889, and hundreds more in the following decades. The link to white rice was clear to Western doctors, but a confounding factor was that some other foods such as meat failed to prevent beriberi, so it could not be easily explained as a lack of known chemicals like carbon or nitrogen. With no knowledge of vitamins, the etiology of beriberi was among the most hotly debated subjects in Victorian medicine.
Jonathan Lavine (1988), business executive, co-managing partner of Bain Capital and chief investment officer of Bain Capital Credit Anita Lo (1988), celebrity chef and restaurateur Danielle Maged (1989), Fox Networks Group executive Joanne Ooi (1989), former creative director of Shanghai Tang; CEO of Clean Air Network and Plukka Paul Greenberg (1990), former CEO of CollegeHumor and current CEO of Nylon Prem Parameswaran (1990), CFO of Eros International Plc and member of the President's Advisory Commission on Asian Americans and Pacific Islanders William von Mueffling (1990), hedge fund manager, president of Cantillon Capital Management Christoph Westphal (1990), biomedical entrepreneur, founder of Alnylam Pharmaceuticals, Acceleron Pharma, and OvaScience Marko Ahtisaari (1991), Finnish entrepreneur; founding CEO of Dopplr; son of Martti Ahtisaari, tenth President of Finland and Nobel Peace Prize laureate Claude Arpels (1991), investor, entrepreneur, grandson of Julien Arpels and heir to the Van Cleef & Arpels fortune Tewodros Ashenafi (1991), founder and CEO of Ethiopian company SouthWest Energy Jack Hidary (1991), financier and entrepreneur, co-founder of the Automotive X Prize and EarthWeb/Dice Inc. E. Javier Loya (1991), CEO of OTC Global Holdings and minority owner in Houston Texans Zia Chishti (1992), entrepreneur and founder of Afiniti and Align Technology Erik Feig (1992), Lionsgate co-president and former president of Summit Entertainment; producer of Step Up series, Escape Plan, Mr. & Mrs.
== Further reading == Bachner, Paul (2021). In further pursuit of excellence: the college of American pathologists 1946-2020 (PDF) (1st ed.). Northfield: College of American Pathologists. ISBN 978-1-941096-61-1.
Sources: en.wikipedia.org
Opioid prescriptions in the US increased from 76 million in 1991 to 207 million in 2013. In the 1990s, opioid prescribing increased significantly. Once used almost exclusively for the treatment of acute pain or pain due to cancer, opioids are now prescribed liberally for people experiencing chronic pain. This has been accompanied by rising rates of accidental addiction and accidental overdoses leading to death. According to the International Narcotics Control Board, the United States and Canada lead the per capita consumption of prescription opioids. The number of opioid prescriptions per capita in the United States and Canada is double the consumption in the European Union, Australia, and New Zealand. Certain populations have been affected by the opioid addiction crisis more than others, including First World communities and low-income populations. Public health specialists say that this may result from the unavailability or high cost of alternative methods for addressing chronic pain. Opioids have been described as a cost-effective treatment for chronic pain, but the impact of the opioid epidemic and deaths caused by opioid overdoses should be considered in assessing their cost-effectiveness. Data from 2017 suggest that in the U.S. about 3.4 percent of the U.S. population are prescribed opioids for daily pain management. Calls for opioid deprescribing have led to broad scale opioid tapering practices with little scientific evidence to support the safety or benefit for patients with chronic pain.
== Redistribution == Highly lipid-soluble drugs given by intravenous or inhalation methods are initially distributed to organs with high blood flow. Later, less vascular but more bulky tissues (such as muscle and fat) take up the drug—plasma concentration falls and the drug is withdrawn from these sites. If the site of action of the drug was in one of the highly perfused organs, redistribution results in termination of the drug action. The greater the lipid solubility of the drug, the faster its redistribution will be. For example, the anaesthetic action of thiopentone is terminated in a few minutes due to redistribution. However, when the same drug is given repeatedly or continuously over long periods, the low-perfusion and high-capacity sites are progressively filled up and the drug becomes longer-acting.
Amaurosis fugax (painless, temporary loss of vision) One-sided facial droop One-sided motor weakness Diplopia (double vision) Problems with balance and spatial orientation or dizziness Visual field deficits, such as homonymous hemianopsia or monocular blindness Sensory deficits in one or more limbs and of the face Loss of ability to understand or express speech (aphasia) Difficulty with articulation of speech (dysarthria) Unsteady gait Difficulties with swallowing (dysphagia) Numbness or weakness generally occurs on the opposite side of the body from the affected hemisphere of the brain. A detailed neurologic exam, including a thorough cranial nerve exam, is important to identify these findings and to differentiate them from mimickers of TIA. Symptoms such as unilateral weakness, amaurosis fugax, and double vision have higher odds of representing TIA compared to memory loss, headache, and blurred vision. Below is a table of symptoms at presentation, and what percentage of the time they are seen in TIAs versus conditions that mimic TIA. In general, focal deficits make TIA more likely, but the absence of focal findings do not exclude the diagnosis, and further evaluation may be warranted if clinical suspicion for TIA is high (see "Diagnosis" section below).
==== Menstrual bleeding ==== Menstrual bleeding is a common cause of iron deficiency anemia in women of childbearing age. Women with menorrhagia (heavy menstrual periods) are at risk of iron deficiency anemia because they are at a higher than normal risk of losing more iron during menstruation than is replaced in their diet. Most women lose about 40 mL of blood per cycle. Some birth control methods, such as pills and IUDs, may decrease the amount of blood and therefore iron lost during a menstrual cycle. Intermittent iron supplementation may be as effective a treatment in these cases as daily supplements and reduce some of the adverse effects of long-term daily supplements.
A fatality was narrowly avoided when Leonov's spacesuit expanded in the vacuum of space, preventing him from re-entering the airlock. To overcome this, he had to partially depressurize his spacesuit to a potentially dangerous level. He succeeded in safely re-entering the spacecraft, but he and Belyayev faced further challenges when the spacecraft's atmospheric controls flooded the cabin with 45% pure oxygen, which had to be lowered to acceptable levels before re-entry. The reentry involved two more challenges: an improperly timed retrorocket firing caused the Voskhod 2 to land 386 kilometers (240 mi) off its designated target area, the city of Perm; and the instrument compartment's failure to detach from the descent apparatus caused the spacecraft to become unstable during reentry. By October 16, 1964, Leonid Brezhnev and a small cadre of high-ranking Communist Party officials deposed Khrushchev as Soviet government leader a day after Voskhod 1 landed, in what was called the "Wednesday conspiracy". The new political leaders, along with Korolev, ended the technologically troublesome Voskhod program, canceling Voskhod 3 and 4, which were in the planning stages, and started concentrating on reaching the Moon. Voskhod 2 ended up being Korolev's final achievement before his death on January 14, 1966, as it became the last of the space firsts that the USSR achieved during the early 1960s.
Sources: en.wikipedia.org
Pakistan was among the first nations to establish formal diplomatic ties with China, forging a strong relationship since China's 1962 conflict with India, culminating in a special bond. During the 1970s, Pakistan acted as an intermediary in U.S.-China rapprochement, facilitating US President Richard Nixon's historic visit to China. Despite changes in Pakistani governance and regional/global dynamics, China's influence in Pakistan remains paramount. In reciprocation, China stands as Pakistan's largest trading partner, with substantial investment in Pakistani infrastructure, notably the Gwadar port. In 2015 alone, they inked 51 agreements and Memorandums of Understanding (MoUs) for cooperative efforts. Both nations signed a Free Trade Agreement in 2006, with China making its largest investment in Pakistan's history through CPEC. Pakistan acts as China's liaison to the Muslim world, and both nations support each other on sensitive issues like Kashmir, Taiwan, Xinjiang, and more.
=== Names === Flunitrazepam is marketed under many brand names in the countries where it is legal. It also has many street names, including "roofie" and "ruffie". It is also known as Circles, Forget Me Pill, La Rocha, Lunch Money Drug, Mexican Valium, Pingus, R2, and Roach 2.
=== UK 1947–1991 === Shortly after being named in testimony before the House Un-American Activities Committee, the Eltentons returned to England. He first took a senior position at the Shell physics research laboratory, but after investigation by MI5 was moved to an area solely concerned with refinery operations.
On March 19, 2012, UPS announced that it intended to acquire TNT Express for $6.8 billion, in a move to help expand its presence in European and Asian markets. However, the deal fell through in January 2013, after it was announced that UPS had failed to obtain permission from the European Commission and as such had been blocked on competition grounds. In February 2012, UPS acquired Brussels-based company Kiala that provides e-commerce retailers the option to have goods delivered to a conventional retail location. In 2018, The Wall Street Journal reported that UPS's operations were hampered by its outdated 20th-century technology, lagging behind its competitors. In May 2019, UPS launched a partnership with autonomous trucking startup TuSimple to carry cargo across Phoenix, Arizona, and Tucson, Arizona. In October 2019, UPS won the approval of the Federal Aviation Administration to fly drones. The certification will allow UPS to deliver health care supplies using a fleet of drones. On January 29, 2020, UPS announced it was investing in UK start-up Arrival and ordering 10,000 Generation 2 electric vehicles as a step towards a cleaner, more high-tech fleet. The deal ran from 2020 until 2024 and was reported to be worth more than $400 million. In March 2020, the company appointed Carol Tomé to succeed David Abney as its chief executive officer. It was viewed as a move to steer the parcel delivery company through the turbulence of trade wars, technological disruption and the risk of a pandemic-induced recession.
Although the agreement was rejected in the subsequent October plebiscite, the same month, then-president of Colombia Juan Manuel Santos was awarded the Nobel Peace Prize for his efforts to bring the country's more than 50-year-long civil war to an end. A revised peace deal was signed the following month and submitted to Congress for approval. The House of Representatives unanimously approved the plan on November 30, a day after the Senate gave its backing.
Sources: en.wikipedia.org
It is a solid form of creatine that contains one water molecule per creatine molecule in the crystal lattice. The hydrate water is part of the crystal structure rather than loose moisture. The term is often used for the common crystalline powder grade.
Creatine anhydrous lacks the water of crystallization and therefore contains a higher creatine fraction by mass. The monohydrate is more common in commerce and research because it is stable and easy to handle. The two forms are not identical in solid state, though both yield creatine when dissolved.
Creatine is the base molecule, while creatine monohydrate is a hydrate of that molecule. Once dissolved, the hydrate water becomes part of the solvent and free creatine is present. In casual usage the names are often shortened to creatine, but the solid forms differ.
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.