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

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Showing 9411 - 9420 of 10111 results

Lithium is an alkali metal widely used in industry. Lithium salts are indicated in the treatment of manic episodes of Bipolar Disorder. The use of lithium in psychiatry goes back to the mid-19th century. Early work, however, was soon forgotten, and John Cade is credited with reintroducing lithium to psychiatry for mania in 1949. Mogens Schou undertook a randomly controlled trial for mania in 1954, and in the course of that study became curious about lithium as a prophylactic for depressive illness. In 1970, the United States became the 50th country to admit lithium to the marketplace. The specific mechanisms by which lithium exerts its mood-stabilizing effects are not well understood. Lithium appears to preserve or increase the volume of brain structures involved in emotional regulation such as the prefrontal cortex, hippocampus and amygdala, possibly reflecting its neuroprotective effects. At a neuronal level, lithium reduces excitatory (dopamine and glutamate) but increases inhibitory (GABA) neurotransmission; however, these broad effects are underpinned by complex neurotransmitter systems that strive to achieve homeostasis by way of compensatory changes. For example, at an intracellular and molecular level, lithium targets second-messenger systems that further modulate neurotransmission. For instance, the effects of lithium on the adenyl cyclase and phospho-inositide pathways, as well as protein kinase C, may serve to dampen excessive excitatory neurotransmission. In addition to these many putative mechanisms, it has also been proposed that the neuroprotective effects of lithium are key to its therapeutic actions. In this regard, lithium has been shown to reduce the oxidative stress that occurs with multiple episodes of mania and depression. Further, it increases protective proteins such as brain-derived neurotrophic factor and B-cell lymphoma 2, and reduces apoptotic processes through inhibition of glycogen synthase kinase 3 and autophagy.
Status:
First marketed in 1921
Source:
Potassium Sulphate N.F.
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)

Conditions:

SULFATE (as sodium sulfate, potassium sulfate, and magnesium sulfate) is a component of SUPREP Bowel Prep Kit. It is an osmotic laxative indicated for cleansing of the colon in preparation for colonoscopy in adults. Sulfate salts provide sulfate anions, which are poorly absorbed. The osmotic effect of unabsorbed sulfate anions and the associated cations causes water to be retained within the gastrointestinal tract. SUPREP Bowel Prep Kit, when ingested with a large volume of water, produces copious watery diarrhea.
Status:
First marketed in 1921
Source:
Sodium Nitrite U.S.P.
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



Nitrite Ion is a symmetric anion with equal N–O bond lengths. Nitrite is important in biochemistry as a source of the potent vasodilator nitric oxide. Nitrate or nitrite (ingested) under conditions that result in endogenous nitrosation has been classified as "Probably carcinogenic to humans" (Group 2A) by International Agency for Research on Cancer (IARC), the specialized cancer agency of the World Health Organization (WHO) of the United Nations. Sodium nitrite is used for the curing of meat because it prevents bacterial growth and, as it is a reducing agent (opposite of oxidation agent), in a reaction with the meat's myoglobin, gives the product a desirable pink-red "fresh" color, such as with corned beef. This use of nitrite goes back to the Middle Ages, and in the US has been formally used since 1925. Because of the relatively high toxicity of nitrite (the lethal dose in humans is about 22 milligrams per kilogram of body weight), the maximum allowed nitrite concentration in meat products is 200 ppm. At these levels, some 80 to 90% of the nitrite in the average U.S. diet is not from cured meat products, but from natural nitrite production from vegetable nitrate intake. Under certain conditions – especially during cooking – nitrites in meat can react with degradation products of amino acids, forming nitrosamines, which are known carcinogens. However, the role of nitrites (and to some extent nitrates) in preventing botulism by preventing C. botulinum endospores from germinating have prevented the complete removal of nitrites from cured meat, and indeed by definition in the U.S., meat cannot be labeled as "cured" without nitrite addition. They are considered irreplaceable in the prevention of botulinum poisoning from consumption of cured dry sausages by preventing spore germination. Nitrite is a member of the drug class antidotes and is used to treat Cyanide Poisoning.
Status:
First marketed in 1921
Source:
Acetic Acid U.S.P.
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



Acetic acid (a component of vinagre) is used in medicine for the treatment of otitis externa caused by bacterial infections. The solution containing acetic acid was approved by FDA.
Status:
First marketed in 1921
Source:
Acetic Acid U.S.P.
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



Acetic acid (a component of vinagre) is used in medicine for the treatment of otitis externa caused by bacterial infections. The solution containing acetic acid was approved by FDA.
A sulfide ion is composed of a lone sulfur atom. Its charge is negative two, giving sulfides this formula: S^2-. Sulfide is a strong base, so solutions of sulfide in water are basic, due to hydrolysis. One well-known ionic compound with a sulfide ion is H_2S. The infamous rotten-egg smell often associated with sulfur originates from this compound. Sodium sulfide nonahydrate is used in the formation of surface functionalized cadmium sulfide quantum dots.
Status:
US Approved OTC
Source:
21 CFR 347.10(a) skin protectant allantoin
Source URL:
First approved in 1961
Source:
ALLANTOMIDE ALLANTOIN by NATIONAL DRUG
Source URL:

Class (Stereo):
CHEMICAL (EPIMERIC)



The aluminum salt of Allantoin, Alcloxa combines the astringent and anti-microbial properties of aluminum with the anti-irritant, soothing and healing properties of Allantoin. Alcloxa is particularly suited for use in anti-perspirants, acne treatments and foot care products. Alcloxa is a compound that combine the properties of aluminum salts with the properties of allantion. The allantion component ehhances the action of the aluminum salts and serves to overcome irritations experienced by many individuals who may be sensitive to the use of aluminum alts. The aluminum component reduces sweat by causing the sweat gland ducts swell. Alcloxa also add to the antiperspirant properties the deodorant effect because of its bacteriostatic action. It showed bacteriostatic properties at concentrations of 0.2% particularly against Gram bectaria (B. subtilis, S. aureus, P. vulgaris, Pityrosporum ovale). This is ascribable to two different mechanisms: first bacterial growth is retarded due to a decrease in the amount of water present, second aluminum salt have itself an antimicrobial action. In baby products is indicated for its healing reparative action, in the treatment of diaper rash. Also is approved in haemorrhoidal product for its soothing and keratolytic action. In oral care products Alcloxa is useful for its astringent antibacterial properties. It is very indicated in formulations for sensitive teeth, periodontal and gum diseases (like gingivitis, irritable and bleeding gums). Use levels: 0.1-1%. − In antiacne products the slightly astringent effect promotes healing of pustules and acne lesions. It reduces the extension of infected skin eruptions, healing them and developing a soothing action. May be used alone or also in combinations with other antimicrobial agents in order to fight acne more effectively. Use levels: 0.5-2.0%.
Status:
US Approved OTC
Source:
21 CFR 355.10(b)(1) anticaries:dentifrices sodium monolfuorophosphate (gel or paste)
Source URL:
First approved in 1953
Source:
NDK Fluoride Dentrifice by NOK
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)


Conditions:

Monofluorophosphate (MFP) is an anion, which is a phosphate group with one oxygen atom substituted with a fluorine atom. Sodium Monofluorophosphate is intended to be used by both petitioners in food supplements as a source of fluoride in the forms of multi-vitamin, multi-mineral supplements, solid tablets or tablets dispersible in liquid. The toxic effects of Monofluorophosphate are attributable to the fluoride ion released by the in vivo hydrolysis of the parent compound. The Monofluorophosphate ion appears to play no role. The acute toxicity of Monofluorophosphate is somewhat less than that of NaF, due to the lesser availability of fluoride in the short term from Monofluorophosphate. In the long term, Monofluorophosphate produces virtually the same picture of renal effects and skeletal storage of fluoride as does NaF. Sodium Monofluorophosphate dissociates into sodium and Monofluorophosphate ions in the intestinal tract, the latter being absorbed mainly in the upper small intestine.
Lidocaine is a local anesthetic and cardiac depressant used to numb tissue in a specific area and for management of cardiac arrhythmias, particularly those of ventricular origins, such as occur with acute myocardial infarction. Lidocaine alters signal conduction in neurons by blocking the fast voltage-gated Na+ channels in the neuronal cell membrane responsible for signal propagation. With sufficient blockage, the membrane of the postsynaptic neuron will not depolarize and will thus fail to transmit an action potential. This creates the anesthetic effect by not merely preventing pain signals from propagating to the brain, but by stopping them before they begin. Careful titration allows for a high degree of selectivity in the blockage of sensory neurons, whereas higher concentrations also affect other modalities of neuron signaling. Lidocaine exerts an antiarrhythmic effect by increasing the electrical stimulation threshold of the ventricle during diastole. In usual therapeutic doses, lidocaine hydrochloride produces no change in myocardial contractility, in systemic arterial pressure, or an absolute refractory period. The efficacy profile of lidocaine as a local anesthetic is characterized by a rapid onset of action and intermediate duration of efficacy. Therefore, lidocaine is suitable for infiltration, block, and surface anesthesia. Longer-acting substances such as bupivacaine are sometimes given preference for spinal and epidural anesthesias; lidocaine, though, has the advantage of a rapid onset of action. Lidocaine is also the most important class-1b antiarrhythmic drug; it is used intravenously for the treatment of ventricular arrhythmias (for acute myocardial infarction, digoxin poisoning, cardioversion, or cardiac catheterization) if amiodarone is not available or contraindicated. Lidocaine should be given for this indication after defibrillation, CPR, and vasopressors have been initiated. A routine preventative dose is no longer recommended after a myocardial infarction as the overall benefit is not convincing. Inhaled lidocaine can be used as a cough suppressor acting peripherally to reduce the cough reflex. This application can be implemented as a safety and comfort measure for patients who have to be intubated, as it reduces the incidence of coughing and any tracheal damage it might cause when emerging from anesthesia. Adverse drug reactions (ADRs) are rare when lidocaine is used as a local anesthetic and is administered correctly. Most ADRs associated with lidocaine for anesthesia relate to administration technique (resulting in systemic exposure) or pharmacological effects of anesthesia, and allergic reactions only rarely occur. Systemic exposure to excessive quantities of lidocaine mainly result in a central nervous system (CNS) and cardiovascular effects – CNS effects usually occur at lower blood plasma concentrations and additional cardiovascular effects present at higher concentrations, though cardiovascular collapse may also occur with low concentrations.
Status:
US Approved OTC
Source:
21 CFR 333.210(f) antifungal undecylenic acid
Source URL:
First approved in 1945
Source:
Desenex Sol. by Pennwalt
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



Undecylenic acid is unsaturated fatty acid, which naturally occurs in sweat, and is commercially produced by the vacuum distillation of castor bean oil. It is recognized as GRASE by FDA, and is marketed over the counter to treat skin infections and to relieve itching. Undecylenic acid acts by inhibition of morphogenesis from yeast to hyphae forms.

Showing 9411 - 9420 of 10111 results