The short version of monohydrate fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2025-10-18 and is reviewed periodically as new material appears.
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.
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.
| 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. |
In the United States, all fifty states, along with the District of Columbia, Puerto Rico, and the U.S. Virgin Islands, have laws that allow a mother to breastfeed a baby in any public or private location. In that country, the Friendly Airports for Mothers (FAM) Act was signed into law in 2019, and the requirements went into effect in 2021. This law requires that all large and medium hub airports in the U.S. provide a private, non-bathroom lactation space in each terminal building. Some commercial establishments in the U.S. provide breastfeeding rooms, although laws generally specify that mothers may breastfeed anywhere without requiring a special area. Despite these laws, many women in the United States continue to be publicly shamed or asked to refrain from breastfeeding in public. In the United Kingdom, the Equality Act 2010 makes the prevention of breastfeeding in any public place discrimination under the law. In Scotland, it is a criminal offense for one to attempt to prevent another from feeding a child under 24 months in public. While laws in the U.S. were passed in 2010 which required that nursing mothers who had returned to work be given a non-bathroom space to express milk and a reasonable break time to do so, as of 2016 the majority of American women still did not have access to both accommodations. In 2014, newly elected Pope Francis drew worldwide commentary when he encouraged mothers to breastfeed babies in church. During a papal baptism, he said that mothers "should not stand on ceremony" if their children were hungry.
=== Physical symptoms === A low body mass index (BMI) for one's age and height (except in cases of atypical anorexia) Rapid, continuous weight loss Dry hair and skin, hair thinning, as well as hair loss Low body temperature (hypothermia) Raynaud Phenomenon Hypotension or orthostatic hypotension Bradycardia or tachycardia Chronic fatigue Insomnia Severe muscle tension, aches and pains Irregular or absent menstrual periods in women Infertility Gastrointestinal disease Halitosis (from vomiting or starvation-induced ketosis) Abdominal distension Russell's Sign; can be a tell-tale sign of self-induced vomiting with scratches on the back of the hand Tooth erosion Lanugo: soft, fine hair growing over the face and body Orange discoloration of the skin, particularly the feet (carotenosis)
The new 13th district encompasses most of the Texas Panhandle and the western part of the Texoma region, containing the cities of Amarillo and Wichita Falls, as well as the college town of Denton in Denton County. The incumbent is Republican Ronny Jackson, who was re-elected unopposed in 2024. Donald Trump won 72.5% of the vote and Ted Cruz 70.3% in this district.
=== Islam === Consumption of food containing blood is forbidden by Islamic dietary laws. This is derived from the statement in the Qur'an, sura Al-Ma'ida (5:3): "Forbidden to you (for food) are: dead meat, blood, the flesh of swine, and that on which has been invoked the name of other than Allah." Blood is considered unclean, hence there are specific methods to obtain physical and ritual status of cleanliness once bleeding has occurred. Specific rules and prohibitions apply to menstruation, postnatal bleeding and irregular vaginal bleeding. When an animal has been slaughtered, the animal's neck is cut in a way to ensure that the spine is not severed, hence the brain may send commands to the heart to pump blood to it for oxygen. In this way, blood is removed from the body, and the meat is generally now safe to cook and eat. In modern times, blood transfusions are generally not considered against the rules.
=== Lethality === The mean lethal dose in rats (i.p.) for ATR is 143 mg/kg and for CATR is 2.9 mg/kg. This lethal dose of ATR takes approximately 150–180 minutes after injection until acute tubular necrosis occurred. This lethal dose varies across species and method of exposure. For example, the mean lethal dose of ATR in rats (s.c.) is 155 mg/kg. Published mean lethal doses of ATR in other species includes 250 mg/kg (s.c.) for rabbit, 200 mg/kg (i.p.) for guinea pig, and 15 mg/kg (i.v.) for dog.
Sources: en.wikipedia.org
=== Controlled-release formulations === Controlled or modified-release formulations are designed to deliver medications at a steady rate over time, helping maintain consistent drug levels in the bloodstream. This steady release reduced how often patients need to take their medication and minimizes the ups and downs in drug concentration that can cause side effects or lower effectiveness. These systems often take the form of matrix tablets, osmotic pumps, and reservoir-type devices, all of which use physical or chemical barriers to regulate how the drug is released. This approach is especially useful for chronic conditions such as high blood pressure, diabetes, or chronic pain, where maintaining stable therapeutic levels is key to keeping symptoms under control. The concept of controlled-release medication dates back to the 1950s, when Dexedrine became the first such formulation on the market. This era saw the introduction of transdermal patches, which deliver drugs slowly through the skin. As technology progressed, new formulations were developed to match the specific properties of different drugs. Examples include long-acting depot injections for medication like antipsychotics and hormone therapies, which remain effective for weeks or even months after a single dose. Since the late 1990s, research has increasingly turned to nanotechnology as a way to improve controlled-released drug delivery.
== External links == Omnibus Budget Reconciliation Act of 1989 (P.L. 101-239) Omnibus Budget Reconciliation Act of 1993 (P.L. 103-66) Social Security Act Amendments of 1994 (P.L. 103-432) Why it takes 60 minutes or less to find a stark law violation
=== Changing medical practices === Atenolol has been given as an example of how slow healthcare providers are to change their prescribing practices in the face of medical evidence that indicates that a drug is not as effective as others in treating some conditions. In 2012, 33.8 million prescriptions were written to American patients for this drug. In 2014, it was in the top (most common) 1% of drugs prescribed to Medicare patients. Although the number of prescriptions has been declining steadily since limited evidence articles contesting its efficacy was published, it has been estimated that it would take 20 years for doctors to stop prescribing it for hypertension. Despite its diminished efficacy when compared to newer antihypertensive drugs, atenolol and other beta blockers are still a relevant clinical choice for treating some conditions, since beta blockers are a diverse group of medicines with different properties that still requires further research. As a consequence, reasons for the continued popularity of beta blockers cannot be fully attributed to a slow healthcare system – patient compliance factors, such as treatment cost and duration, also affect adherence and popularity of therapy.
Aseptic processing works by placing sterilized food (typically by heat, see ultra-high temperature processing) into sterilized packaging material under sterile conditions. The result is a sealed, sterile food product similar to canned food, but depending on the technique used, damage to food quality is typically reduced compared to canned food. A greater variety of packaging materials can be used as well. Besides UHT, aseptic processing may be used in conjunction with any of the microbe-reduction technologies listed below. With pasteurization and "high pressure pasteurization", the food may not be completely sterilized (instead achieving a specified log reduction), but the use of sterile packaging and environments is retained.
Sources: en.wikipedia.org
=== Later career === During World War II, Mester worked as a surgeon at Saint John's Hospital and in the "Rock Hospital", located in the tunnels underneath Castle Hill in Budapest. Mester chaired the Surgery Department of the Bajcsy Zsilinszky Teaching Hospital in Budapest from 1947 until 1963. He publicly welcomed the 1956 Hungarian uprising against Communism yet, when it failed, he was not persecuted because of his important medical work. In 1963, he became Professor and Department Chair at the Semmelweis Medical University in Budapest, and worked there until his retirement in 1973. In 1971, he received the "Doctor of Sciences" title from the Hungarian Academy of Sciences.
Military logistics is the science of planning and carrying out the movement and maintenance of armed forces. In its most comprehensive sense, those aspects of military operations that deal with: a. design and development, acquisition, storage, movement, distribution, maintenance, evacuation, and disposition of materiel; b. movement, evacuation, and hospitalization of personnel; c. acquisition or construction, maintenance, operation and disposition of facilities; and d. acquisition or furnishing of services. The main difference between the concept of logistic management and supply-chain management is the level of information gathered, processes, analysed and used for decision making. An SCM-based organization not only having concerns with its immediate clients but also handles and forecasts the factors affecting directly or indirectly their supplier or suppliers or on their client or clients. If we exclude this information part out of supply chain model then we can see the logistic management part of the business.
=== Exercise === Weight loss in those who are overweight or obese and exercise provide long-term benefit and are recommended in all people with osteoarthritis. Weight loss and exercise are the most safe and effective long-term treatments, in contrast to short-term treatments which usually have risk of long-term harm. Therapeutic exercise programs, such as aerobics and walking, may reduce pain and improve physical functioning for up to 6 months after the end of the program. High-impact exercise can increase the risk of joint injury, whereas low or moderate-impact exercise, such as walking or swimming, is safer for people with osteoarthritis. Moderate exercise may be beneficial with respect to pain and function in those with osteoarthritis of the knee and hip. These exercises should occur at least three times per week, under supervision, and focused on specific forms of exercise found to be most beneficial for this form of osteoarthritis. While some evidence supports certain physical therapies, evidence for a combined program is limited. Providing clear advice, making exercises enjoyable, and reassuring people about the importance of doing exercises may lead to greater benefit and more participation. Some evidence suggests that supervised exercise therapy may improve exercise adherence, with knee osteoarthritis, supervised exercise has shown the best results.
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.
Solid product can remain within specification for years when stored dry and sealed, but expiration dates reflect manufacturer testing and regulatory conventions. Moisture and heat increase conversion to creatinine, so storage conditions matter more than the printed date alone. Degradation is gradual and can be monitored by purity testing.