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

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Showing 1541 - 1550 of 6715 results

Status:
Possibly Marketed Outside US
Source:
DRAXXIN by Pfizer
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)



Tulathromycin A is a triamilide antibiotic. Exists as an equilibrium mixture of two isomeric forms, Tulathromycin A (90%) and B (10%). It acts by binding to a bacterial ribosome sub-unit thereby inhibiting protein synthesis. Tulathromycin mixture is indicated for the treatment of bovine and swine respiratory disease, infectious bovine keratoconjunctivitis, bovine foot rot (interdigital necrobacillosis). In one bovine respiratory disease field study, two calves treated with DRAXXIN (Tulathromycin mixture) exhibited transient hypersalivation. In one field study, one out of 40 pigs treated with DRAXXIN exhibited mild salivation that resolved in less than four hours. Cross resistance occurs with other macrolides. Do not administer simultaneously with antimicrobials with a similar mode of action such as other macrolides or lincosamides.
Status:
Possibly Marketed Outside US
Source:
NEOSPORIN by Dubos, R.
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)


Linear gramicidin is a hydrophobic antibiotic polypeptide composed of 15 hydrophobic amino acids in D- and L-alternate conformers with the following sequence: formyl-L-X-gly-L-ala-D-leu-L-ala-D-val-L-val-D-val-L-trp-D-leu-Ltrp-D-leu-L-trp-D-leu-L-trp-ethanolamine where X represents either valine or isoleucine. Whether amino acid 11 is tryptophan, phenylalanine, or tyrosine, gramicidins are called A, B, or C, respectively. A mixture of three pairs of antibacterial substances (Gramicidin A, B, and C) is also called Gramicidin D and is produced by the growth of Bacillus brevis Dubos (Fam. Bacillaceae). Gramicidin is bactericidal for a variety of gram-positive organisms. It increases the permeability of the bacterial cell membrane to inorganic cations by forming a network of channels through the normal lipid bilayer of the membrane. Gramicidin is used in the combination with neomycin sulfate and polymyxin B sulfate (NEOSPORIN®) for the topical treatment of superficial infections of the external eye and its adnexa caused by susceptible bacteria.
Status:
Possibly Marketed Outside US
Source:
Senokot by Stoll, A.
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)



Sennoside A, derived from the traditional chinese medicine plant Rheum L., has being shown to be a dual HIV-1 inhibitor effective on HIV-1 replication. Sennoside A is a kind of irritant laxative. It is also used for colonoscopy preparation. It mildly inhibits bovine serum monoamine oxidase with IC50 of 17uM.
Status:
Possibly Marketed Outside US
Source:
PERFECT SLEEP by Lipmann, F. et al.
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)



Coenzyme A (CoA) is a ubiquitous essential cofactor that plays a central role in the metabolism of carboxylic acids, including short- and long-chain fatty acids, as well as carbohydrate and protein. In the metabolic pathway of lipid, CoA participates in fatty acid β-oxidation, promoting triglyceride (TG) catabolism. Coenzyme A functions as an acyl group carrier and assists in transferring fatty acids from the cytoplasm to mitochondria. All genomes sequenced to date encode enzymes that use coenzyme A as a substrate, and around 4% of cellular enzymes use it (or a thioester, such as acetyl-CoA) as a substrate. Coenzyme A is the most active metabolic enzyme in the human body. It is used as a supplement for the hypothetical treatment of acne.
mixture

Class:
MIXTURE

Conditions:

Spinosad is a natural mixture of pediculicidal tetracyclic macrolides—spinosyn A and spinosyn D in the ratio of 5:1. It is derived from species of actinomycetes bacteria - Saccharopolyspora spinosa and is a bacterial waste product produced by fermentation on a nutrient food source. It has since long been used as a pesticide and classified by the US Environment Protection Agency as a reduced risk pesticide product. Spinosad has a high level of efficacy for lepidopteran larvae, as well as some Diptera, Coleoptera, Thysanoptera, and Hymenoptera, but has limited to no activity to other insects and exhibits low toxicity to mammals and other wildlife. Spinosad overstimulates nerve cells by prolonging electrical impulse across synapses by acting like acetylcholine. After periods of hyperexcitation, lice become paralyzed and die. Recently, FDA has approved the topical suspension of spinosad 0.9% for treatment of head lice infestation in patients four years of age and older. It is both pediculicidal and ovicidal.
Colistin sulfate is a polypeptide antibiotic which penetrates into and disrupts the bacterial cell membrane. It is a cyclic polypeptide antibiotic from Bacillus colistinus. It is composed of Polymyxins E1 and E2 (or Colistins A, B, and C). Colistin was first isolated in Japan in 1949 from a flask of fermenting Bacillus polymyxa var. colistinus and became available for clinical use in 1959. The following local adverse events have been reported with topical corticosteroids, especially under occlusive dressings: burning, itching, irritation, dryness, folliculitis, hypertrichosis, etc. Healthcare providers had largely stopped using colistin in the 1970s because of its toxicity. However, with antibacterial resistance on the rise, colistin is increasingly being used today to treat severe, multidrug-resistant Gram-negative bacterial infections, particularly among intensive care-based patients. The problem with re-introducing an older drug, such as colistin, though, is that techniques for evaluating new drugs have evolved since the 1950s, and therefore, little is known about the dose needed to effectively fight infection while limiting the potential emergence of antimicrobial resistance and reducing potentially toxic side effects. More data are needed to guide optimal use of these older medications. An international team of NIAID-funded researchers is making progress in obtaining better dosing information about colistin and how best to use the antibiotic to treat Gram-negative bacterial infections. Resistance to colistin is rare. The first colistin-resistance gene that is carried in a plasmid and can be transferred between bacterial strains was described in 2016. This plasmid-borne mcr-1 gene has since been isolated in China, Europeand the United States.
Retonol, also known as Vitamin A1, is a vitamin found in food and used as a dietary supplement. It is used to treat and prevent vitamin A deficiency. It is also used to prevent further issues in those who have measles. Retinol is used as a metabolic precursor of retinoic acid to treat skin-related conditions, such as cellulite, skin aging, photodamage.
mixture
Status:
First approved in 1940
Source:
Ephynal Acetate by Hoffmann-La Roche
Source URL:

Class:
MIXTURE



It is known that Vitamin E, traditionally known as α¬ tocopherol, is a mixture of eight different compounds, four tocopherols and four tocotrienols, each one being designated as α, β, γ and δ forms. The two groups differ in the hydrophobic tridecyl side chain which is saturated (phytyl) in tocopherols and unsaturated having three double bonds (geranyl) in tocotrienols. During the last few years, it has been found that all the eight forms are biologically active and perform specific functions. Clinical research has shown that mixture of tocotrienols and tocopherols offer synergistic protective action against heart ailments and cancer that is not exclusively offered by α¬tocopherol. The other advantage of mixed tocopherols and tocotrienols is their role in slowing down aging. Diseases like diabetes 1 and 2, autoimmune diseases, bacterial and viral infections, Alzheimer disease, fungal (Candida) infections are prevented by these compounds. It helps in the maintenance of bones, muscles, eyes (vision), memory, sleep, lungs, infertility, skin and wrinkles. Although all forms of Vitamin E exhibit antioxidant activity, it is known that the antioxidant activity of vitamin E is not sufficient to explain the vitamin's biological activity. Vitamin E's anti-atherogenic activity involves the inhibition of the oxidation of LDL and the accumulation of oxLDL in the arterial wall. Vitamin E's antithrombotic and anticoagulant activities involves the downregulation of the expression of intracellular cell adhesion molecule(ICAM)-1 and vascular cell adhesion molecule(VCAM)-1 that lowers the adhesion of blood components to the endothelium. Its antioxidant effects explain the neuroprotective effects of vitamin E. The immunomodulatory effects of Vitamin E have been demonstrated in vitro, where alpha-tocopherol increases mitogenic response of T lymphocytes from aged mice. The mechanism of this response by vitamin E is not well understood, however it has been suggested that vitamin E itself may have mitogenic activity independent of its antioxidant activity. The mechanism of action of vitamin E's antiviral effects (primarily against HIV-1) involves its antioxidant activity. Vitamin E reduces oxidative stress, which is thought to contribute to HIV-1 pathogenesis, as well as to the pathogenesis of other viral infections. Vitamin E also affects membrane integrity and fluidity and, since HIV-1 is a membraned virus, altering membrane fluidity of HIV-1 may interfere with its ability to bind to cell-receptor sites, thus decreasing its infectivity.
mixture
Status:
US Approved OTC
Source:
21 CFR 349.12(c) ophthalmic:demulcents gelatin
Source URL:
First marketed in 1921

Class:
MIXTURE

mixture
Status:
Investigational
Source:
USAN:PAFLUFOCON D-HEM-IBERFILCON A [USAN]
Source URL:

Class:
MIXTURE

Showing 1541 - 1550 of 6715 results