U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

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Showing 1801 - 1810 of 1873 results

Status:
US Previously Marketed
Source:
21 CFR 310.545(a)(20) weight control choline
Source URL:
First approved in 2001
Source:
Vitamin B Complex 150 by Covetrus North America
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



CHOLINE is a basic constituent of lecithin that is found in many plants and animal organs. Choline was officially recognized as an essential nutrient by the Institute of Medicine in 1998.1 Its role in the body is complex. It is needed for neurotransmitter synthesis (acetylcholine), cell-membrane signaling (phospholipids), lipid transport (lipoproteins), and methyl-group metabolism (homocysteine reduction). It is the major dietary source of methyl groups via the synthesis of S-adenosylmethionine (AdoMet). At least 50 AdoMet-dependent reactions have been identified in mammals, and it is likely that the number is much higher. Choline is required to make the phospholipids phosphatidylcholine, lysophosphatidylcholine, choline plasmalogen, and sphingomyelin—essential components for all membranes. It plays important roles in brain and memory development in the fetus and appears to decrease the risk of the development of neural tube defects. The importance of choline in the diet extends into adulthood and old age. In a study of healthy adult subjects deprived of dietary choline, 77% of the men and 80% of the postmenopausal women developed signs of subclinical organ dysfunction (fatty liver or muscle damage). Less than half of premenopausal women developed such signs. Ten percent of the subjects studied developed fatty liver, muscle damage, or both when they consumed the Adequate Intake (AI) of choline. The damage was reversed when they consumed a high-choline diet. Plasma choline concentration has been found to vary in response to diet, decreasing approximately 30 percent in humans fed a choline-deficient diet for 3 weeks. Based on estimated dietary intakes and studies reporting liver damage with lower choline intakes, the Institute of Medicine, Food and Nutrition Board set the AI for choline at 425 milligrams/per day for women aged 19 and older, and 550 milligrams/per day for men aged 19 and older.
Status:
US Previously Marketed
Source:
21 CFR 310.545(a)(20) weight control threonine
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)



L-threonine is an essential amino acid. Threonine is a precursor of glycine. The biochemical studies on rats proved that glycine is synthesized from threonine (through threonine dehydrogenase pathway). Threonine dehydrogenase is the key enzyme in mammals like pigs, cat, and rats for degradation of 80% threonine. In adult humans, degradation of 7–11% of threonine is done by threonine dehydrogenase. The human L-threonine 3-dehydrogenase gene (GeneID: 157739, UniProtKB: Q8IZJ6 (TDH_HUMAN)) is an expressed pseudogene having lost the splice acceptor site preceding exon 6 and codon arginine-214 (CGA) is mutated to a stop codon (TGA). A few trials demonstrated that oral L-threonine may alleviate clinical signs of amyotrophic lateral sclerosis and spasticity in humans. L-Threonine has recently been brought into agricultural industry for balancing the livestock feed.
Leucine is an α-amino acid used in the biosynthesis of proteins. Leucine is an essential hydrophobic amino acid. It is used in the Leucine may be used some people as a supplement to build muscle. Leucine is also found in fish, meat, and poultry. In the pharmaceutical industry, L-leucine is used for parenteral and enteral nutrition and feeding, and is also used as a flavoring product and tablet lubricant in manufacturing. Leucine is an mTOR activator. It is a dietary amino acid with the capacity to directly stimulate muscle protein synthesis. As a dietary supplement, leucine has been found to slow the degradation of muscle tissue by increasing the synthesis of muscle proteins in aged rats. Long-term leucine supplementation does not increase muscle mass or strength in healthy elderly men. Leucine potently activates the mammalian target of rapamycin kinase that regulates cell growth. Infusion of leucine into the rat brain has been shown to decrease food intake and body weight via activation of the mTOR pathway.
Status:
US Previously Marketed
Source:
21 CFR 310.545(a)(20) weight control isoleucine
Source URL:

Class (Stereo):
CHEMICAL (RACEMIC)



Isoleucine is an essential α-amino acid that is used in the biosynthesis of proteins. L-isoleucine is commonly used in parenteral and enteral nutrition. It is used in combination with the other branched chain amino acids to improve the nutritional status of patients with hepatic diseases. BCAAs serve as important fuel sources for skeletal muscle during periods of metabolic stress
Status:
US Previously Marketed
Source:
Peri-Colace by Mead Johnson
(1956)
Source URL:
First approved in 1956
Source:
Peri-Colace by Mead Johnson
Source URL:

Class (Stereo):
CHEMICAL (MIXED)

Conditions:

Docusate, also known as docusate salts or dioctyl sulfosuccinate, prevents/relieves dry hard stool and thus is used to treat constipation. Results usually occurs 1 to 3 days after the first dose. In North America, docusate and a stimulant laxative such as sennosides are commonly used in bowel treatment protocols associated with institutionalized elderly and oncology treatments. A paucity of evidence is available to support the use of the stool softener docusate yet it continues to be prescribed in everyday clinical practice for the aforementioned populations. While the actual cost of docusate is low, additional costs associated with its administration (i.e. nursing time) and its widespread use can be significant. Docusate is absorbed into the bloodstream and excreted via the gallbladder after undergoing extensive metabolism. The effect of docusate may not necessarily be all due to its surfactant properties. Perfusion studies suggest that docusate inhibits fluid absorption or stimulates secretion in the portion of the small intestine known as the jejunum
Status:
US Previously Marketed
Source:
Sucaryl Calcium by Abbott
(1953)
Source URL:
First approved in 1953
Source:
Sucaryl Calcium by Abbott
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)

CALCIUM CYCLAMATE, a salt of cyclamic acid, is an artificial sweetener. Cyclamates and its salts (such as calcium cyclamate, sodium cyclamate, magnesium cyclamate, and potassium cyclamate) are currently prohibited from use in the United States.
Status:
US Previously Marketed
Source:
Sucaryl Sodium by Abbott
(1950)
Source URL:
First approved in 1950
Source:
Sucaryl Sodium by Abbott
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



Cyclamic acid (Cyclamate) is banned in the United States but it is used in many other Western countries without safety concerns. Cyclamate interacts with the sweet taste receptor subunit T1R3 transmembrane domain. Initially it was recommended for use in treatment of obese patients and by individuals with diabetes but in August 27, 1970 FDA concluded that there was no substantial evidence of effectiveness of cyclamate compounds at any level for treatment of obese patients and individuals with diabetes and therefore prohibited continued sale of cyclamate containing products with drug labeling. cyclamate is the putative carcinogenic agent. Cyclamate was tested in the Maximal Electroshock Seizure model (mice, ip), showing moderate anticonvulsant activity.
Status:
US Previously Marketed
First approved in 1950
Source:
PIG SWIGFOR SWINE AND POULTRY by LeGear Animal Health
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)


Conditions:

Piperazine, a six membered nitrogen containing heterocycle, is of great significance to the rational design of drugs. This moiety can be found in a plethora of well-known drugs with various therapeutic uses, such as antipsychotic, antihistamine, antianginal, antidepressant, anticancer, antiviral, cardio protectors, anti-inflammatory, and imaging agents. Slight modification to the substitution pattern on the piperazine nucleus facilitates a recognizable difference in the medicinal potential of the resultant molecules. Piperazine has been used as an antihelmintic drug. Piperazine works by paralyzing the worms. They are then passed in the stool.
Glutamic acid is a non-essential aminoacid used in biosynthesis of proteins. Besides being a building block of proteins, glutamic acid plays a principal role in neural activation. Glutamate is also responsible for the umami (savory) flavor of certain foods. In medicine, glutamate is used as a metabolic supplemnet in patients undergoing coronary surgery.
Glutamic acid is a non-essential aminoacid used in biosynthesis of proteins. Besides being a building block of proteins, glutamic acid plays a principal role in neural activation. Glutamate is also responsible for the umami (savory) flavor of certain foods. In medicine, glutamate is used as a metabolic supplemnet in patients undergoing coronary surgery.

Showing 1801 - 1810 of 1873 results