{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
{{facet.count}}
Restrict the search for
vitamin a
to a specific field?
Status:
US Approved Rx
(2020)
Source:
ANDA212541
(2020)
Source URL:
First approved in 1955
Class (Stereo):
CHEMICAL (ACHIRAL)
Conditions:
Pyrazinamide is indicated for the initial treatment of active tuberculosis in adults and children when combined with other antituberculous agents. (The current recommendation of the CDC for drug-susceptible disease is to use a six-month regimen for initial treatment of active tuberculosis, consisting of isoniazid, rifampin and pyrazinamide given for 2 months, followed by isoniazid and rifampin for 4 months. Pyrazinamide should only be used in conjunction with other effective antituberculous agents. Pyrazinamide diffuses into M. tuberculosis, where the enzyme pyrazinamidase converts pyrazinamide to the active form pyrazinoic acid. Under acidic conditions, the pyrazinoic acid that slowly leaks out converts to the protonated conjugate acid, which is thought to diffuse easily back into the bacilli and accumulate. The net effect is that more pyrazinoic acid accumulates inside the bacillus at acid pH than at neutral pH. Pyrazinoic acid was thought to inhibit the enzyme fatty acid synthase (FAS) I, which is required by the bacterium to synthesise fatty acids. However, this theory was thought to have been discounted. However, further studies reproduced the results of FAS I inhibition as the putative mechanism first in whole cell assay of replicating M. tuberculosis bacilli which have shown that pyrazinoic acid and its ester inhibit the synthesis of fatty acids . This study was followed by in vitro assay of tuberculous FAS I enzyme that tested the activity with pyrazinamide, pyrazinoic acid and several classes of pyrazinamide analogs. Pyrazinamide and its analogs inhibited the activity of purified FAS I. It has also been suggested that the accumulation of pyrazinoic acid disrupts membrane potential and interferes with energy production, necessary for survival of M. tuberculosis at an acidic site of infection. Pyrazinoic acid has also been shown to bind to the ribosomal protein S1 (RpsA) and inhibit trans-translation. This may explain the ability of the drug to kill dormant mycobacteria
Status:
US Approved Rx
(2009)
Source:
ANDA090122
(2009)
Source URL:
First approved in 1955
Source:
EQUANIL by WYETH AYERST
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Conditions:
Meprobamate is a carbamate derivative used as an anxiolytic drug. Meprobamate enhances GABA-A currents, and at higher concentration, exhibits a separate channel-blocking effect that limits the magnitude of GABA(A) receptor potentiation. It is also a potent adenosine reuptake inhibitor (AdoRI), which is most likely responsible for its lesser degree of sedation compared to barbiturates. Meprobamate was withdrawn from European and Canadian markets due to its potential to cause physical and psychological dependence.
Status:
US Approved Rx
(2010)
Source:
ANDA091396
(2010)
Source URL:
First approved in 1955
Source:
DELTA-CORTEF by PHARMACIA AND UPJOHN
Source URL:
Class (Stereo):
CHEMICAL (ABSOLUTE)
Targets:
Conditions:
Prednisolone hemisuccinate is a prodrug of a glucocorticoid agonist prednisolone, which is marketed under trade name Prednisolut in Germany and Austria. Prednisolone hemisuccinate is used in emergency medicine to treate shock due to allergic reaction, insect and snake bites, in neurology to treat brain edema and meningitis, in transplantation medicine to reduce risk of organ refection after kidney transplane, in pneumology to treat acute asthma attack, pulmonary edema, in severe or life-threatening situation in rheumatic diseases.
Status:
US Approved Rx
(2002)
Source:
ANDA076268
(2002)
Source URL:
First approved in 1954
Source:
NDA009330
Source URL:
Class (Stereo):
CHEMICAL (ABSOLUTE)
Targets:
Conditions:
Digoxin, a cardiac glycoside similar to digitoxin, is used to treat congestive heart failure and supraventricular arrhythmias due to reentry mechanisms, and to control ventricular rate in the treatment of chronic atrial fibrillation. Digoxin inhibits the Na-K-ATPase membrane pump, resulting in an increase in intracellular sodium. The sodium calcium exchanger (NCX) in turn tries to extrude the sodium and in so doing, pumps in more calcium. Increased intracellular concentrations of calcium may promote activation of contractile proteins (e.g., actin, myosin). Digoxin also acts on the electrical activity of the heart, increasing the slope of phase 4 depolarization, shortening the action potential duration, and decreasing the maximal diastolic potential.
Status:
US Approved Rx
(2005)
Source:
ANDA040586
(2005)
Source URL:
First approved in 1954
Source:
NDA009170
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Primidone is an anticonvulsant of the barbiturate class. It was introduced in 1954 under the brand name Mysoline by Wyeth in the United States. Mysoline, used alone or concomitantly with other anticonvulsants, is indicated in the control of grand mal, psychomotor, and focal epileptic seizures. It may control grand mal seizures refractory to other anticonvulsant therapy. Mysoline raises electro- or chemoshock seizure thresholds or alters seizure patterns in experimental animals. The mechanism(s) of primidone’s antiepileptic action is not known. Primidone per se has anticonvulsant activity, as do its two metabolites, phenobarbital and phenylethylmalonamide (PEMA). In addition to its anticonvulsant activity, PEMA potentiates the anticonvulsant activity of phenobarbital in experimental animals. Primidone itself doesn’t act on GABA-A receptors. It is active metabolite - phenobarbital primary acts via modulation of GABA -A receptors. The most frequently occurring early side effects are ataxia and vertigo. These tend to disappear with continued therapy, or with reduction of initial dosage. Occasionally, the following have been reported: nausea, anorexia, vomiting, fatigue, hyperirritability, emotional disturbances, sexual impotency, diplopia, nystagmus, drowsiness, and morbilliform skin eruptions.Granulocytopenia, agranulocytosis, and red-cell hypoplasia and aplasia, have been reported rarely. These and, occasionally, other persistant or severe side effects may necessitate withdrawal of the drug. Megaloblastic anemia may occur as a rare idiosyncrasy to Mysoline and to other anticonvulsants. The anemia responds to folic acid without necessity of discontinuing medication.
Status:
US Approved Rx
(2013)
Source:
ANDA202202
(2013)
Source URL:
First approved in 1954
Source:
COUMADIN by BRISTOL MYERS SQUIBB
Source URL:
Class (Stereo):
CHEMICAL (RACEMIC)
Conditions:
Warfarin is an anticoagulant drug normally used to prevent blood clot formation as well as migration. Warfarin is marketed under the brand name Coumadin among others. Coumadin (crystalline warfarin sodium) is an anticoagulant which acts by inhibiting vitamin
K-dependent coagulation factors. Chemically, it is 3-(α-acetonylbenzyl)-4-hydroxycoumarin and is a racemic mixture of the R- and S-enantiomers. Coumadin is indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, and pulmonary embolism. It is also indicated for the prophylaxis and/or treatment of the thromboembolic
complications associated with atrial fibrillation and/or cardiac valve replacement. Warfarin is thought to interfere with clotting factor synthesis by inhibition of the C1 subunit of the vitamin K epoxide reductase (VKORC1) enzyme complex, thereby reducing the regeneration of vitamin K1 epoxide. The degree of depression is dependent upon the dosage
administered and, in part, by the patient’s VKORC1 genotype. Therapeutic doses of warfarin decrease the total amount of the active form of each vitamin K dependent clotting factor made by the liver by approximately 30% to 50%.
Status:
US Approved Rx
(1999)
Source:
NDA020954
(1999)
Source URL:
First approved in 1954
Class (Stereo):
CHEMICAL (ACHIRAL)
Targets:
Conditions:
Busulfan is a bifunctional alkylating agent, having a selective immunosuppressive effect on bone marrow. It has been used in the palliative treatment of chronic myeloid leukemia (myeloid leukemia, chronic). Most common adverse reactions (incidence greater than 60%) were: myelosuppression, nausea, stomatitis, vomiting, anorexia, diarrhea, insomnia, fever, hypomagnesemia, abdominal pain, anxiety, headache, hyperglycemia and hypokalemia. Itraconazole and acetaminophen can decrease busulfan clearance. Phenytoin increases hepatic clearance of busulfan.
Status:
US Approved Rx
(1955)
Source:
NDA010040
(1955)
Source URL:
First approved in 1954
Source:
HYPAQUE by GE HEALTHCARE
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
This compound belongs to the class of organic compounds known as aminobenzoic acids. These are benzoic acids containing an amine group attached to the benzene moiety. A commonly used x-ray contrast medium. Used, alone or in combination, for a wide variety of diagnostic imaging methods, including angiography, urography, cholangiography, computed tomography, hysterosalpingography, and retrograde pyelography. It can be used for imaging the gastrointestinal tract in patients allergic to barium. Radiopaque agents are drugs used to help diagnose certain medical problems. They contain iodine, which blocks x-rays. Depending on how the radiopaque agent is given, it localizes or builds up in certain areas of the body. The resulting high level of iodine allows the x-rays to make a "picture" of the area. The areas of the body in which the radiopaque agent localizes will appear white on the x-ray film. This creates the needed distinction, or contrast, between one organ and other tissues.
Status:
US Approved Rx
(2007)
Source:
ANDA040767
(2007)
Source URL:
First approved in 1953
Source:
METHOTREXATE SODIUM by STRIDES PHARMA
Source URL:
Class (Stereo):
CHEMICAL (ABSOLUTE)
Methotrexate is an antineoplastic anti-metabolite. Anti-metabolites masquerade as purine or pyrimidine - which become the building blocks of DNA. They prevent these substances becoming incorporated in to DNA during the "S" phase (of the cell cycle), stopping normal development and division. Methotrexate inhibits folic acid reductase which is responsible for the conversion of folic acid to tetrahydrofolic acid. At two stages in the biosynthesis of purines and at one stage in the synthesis of pyrimidines, one-carbon transfer reactions occur which require specific coenzymes synthesized in the cell from tetrahydrofolic acid. Tetrahydrofolic acid itself is synthesized in the cell from folic acid with the help of an enzyme, folic acid reductase. Methotrexate looks a lot like folic acid to the enzyme, so it binds to it quite strongly and inhibits the enzyme. Thus, DNA synthesis cannot proceed because the coenzymes needed for one-carbon transfer reactions are not produced from tetrahydrofolic acid because there is no tetrahydrofolic acid. Methotrexate selectively affects the most rapidly dividing cells (neoplastic and psoriatic cells). Methotrexate is indicated in the treatment of gestational choriocarcinoma, chorioadenoma destruens and hydatidiform mole. In acute lymphocytic leukemia, methotrexate is indicated in the prophylaxis of meningeal leukemia and is used in maintenance therapy in combination with other chemotherapeutic agents. Methotrexate is also indicated in the treatment of meningeal leukemia. Methotrexate is used alone or in combination with other anticancer agents in the treatment of breast cancer, epidermoid cancers of the head and neck, advanced mycosis fungoides (cutaneous T cell lymphoma), and lung cancer, particularly squamous cell and small cell types. Methotrexate is also used in combination with other chemotherapeutic agents in the treatment of advanced stage non-Hodgkin’s lymphomas. Methotrexate is indicated in the symptomatic control of severe, recalcitrant, disabling psoriasis. Methotrexate is indicated in the management of selected adults with severe, active rheumatoid arthritis (ACR criteria), or children with active polyarticular-course juvenile rheumatoid arthritis.
Status:
US Approved Rx
(2021)
Source:
ANDA213906
(2021)
Source URL:
First approved in 1953
Source:
LEVO-DROMORAN by VALEANT PHARM INTL
Source URL:
Class (Stereo):
CHEMICAL (ABSOLUTE)
Conditions:
Levorphanol, brand name Levo-Dromoran, is an opioid medication used to treat moderate to severe pain. Levorphanol is indicated for the management of moderate to severe pain where an opioid analgesic
is appropriate. It is a potent synthetic opioid mu-receptor agonist similar in action to morphine. Like other opioid
mu-receptor agonists, it is believed to act at receptors in both the brain and spinal cord to alter the transmission
and perception of pain. The onset and peak analgesic effects following administration of levorphanol are similar to
morphine when administered at equal analgesic doses. Levorphanol produces a degree of respiratory depression
similar to that produced by morphine at equal analgesic doses, and like many opioid mu-receptor agonists,
levorphanol produces euphoria or has a positive effect on mood in many individuals.
