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Status:
US Previously Marketed
Source:
HALFAN by GLAXOSMITHKLINE
(1992)
Source URL:
First approved in 1992
Source:
HALFAN by GLAXOSMITHKLINE
Source URL:
Class (Stereo):
CHEMICAL (RACEMIC)
Targets:
Halofantrine is a blood schizonticidal antimalarial agent with no apparent action on the sporozoite, gametocyte or hepatic stages of the infection. It is used only to treat but not to prevent malaria. Has been marketed by GlaxoSmithKline as HALFAN (halofantrine hydrochloride) in 250 mg tablets indicated for the treatment of adults who can tolerate oral medication and who have mild to moderate malaria (equal to or less than 100,000 parasites/mm3) caused by Plasmodium falciparum or Plasmodium vivax. Among side effects is cardiac arrhythmia. It belongs to the phenanthrene class of compounds that includes quinine and lumefantrine. It was reported that halofantrine binds to hematin in vitro (crystal structure of the complex) and to to plasmpesin, a haemoglobin degrading enzyme unique to the malarial parasites.
Status:
US Previously Marketed
Source:
CEFPIRAMIDE SODIUM by WYETH AYERST
(1989)
Source URL:
First approved in 1989
Source:
CEFPIRAMIDE SODIUM by WYETH AYERST
Source URL:
Class (Stereo):
CHEMICAL (ABSOLUTE)
Conditions:
Cefpiramide or SM-1652 (sodium 7-[D(-)-alpha-(4-hydroxy-6-methylpyridine-3-carboxamido)-alpha-(4-hydroxyphenyl)acetamido]-3-[(1-methyl-1H-tetrazol-5-yl) thiomethyl]-3-cephem-4-carboxylate) is a semisynthetic cephalosporin derivative with a broad spectrum of antibacterial activity. This antibiotic has been reported to have potent in vitro and in vivo antibacterial activities against gram-positive and -negative bacteria.
Status:
US Previously Marketed
Source:
PERGOLIDE MESYLATE by STRIDES PHARMA
(2002)
Source URL:
First approved in 1988
Source:
PERMAX by VALEANT PHARM INTL
Source URL:
Class (Stereo):
CHEMICAL (ABSOLUTE)
Conditions:
Pergolide is a long-acting dopamine agonist approved in 1982 for the treatment of Parkinson’s Disease. It is an ergot derivative that acts on the dopamine D2 and D3, alpha2- and alpha1-adrenergic, and 5-hydroxytryptamine (5-HT) receptors. It was indicated as adjunct therapy with levodopa/carbidopa in the symptomatic treatment of parkinsonian syndrome. It was later found that pergolide increased the risk of cardiac valvulopathy. The drug was withdrawn from the US market in March 2007 and from the Canadian market in August 2007. Pergolide stimulates centrally-located dopaminergic receptors resulting in a number of pharmacologic effects. Five dopamine receptor types from two dopaminergic subfamilies have been identified. The dopaminergic D1 receptor subfamily consists of D1 and D5 subreceptors and are associated with dyskinesias. The dopaminergic D2 receptor subfamily consists of D2, D3 and D4 subreceptors and has been associated with improvement of symptoms of movement disorders. Thus, agonist activity specific for D2 subfamily receptors, primarily D2 and D3 receptor subtypes, are the primary targets of dopaminergic antiparkinsonian agents. It is thought that postsynaptic D2 stimulation is primarily responsible for the antiparkinsonian effect of dopamine agonists, while presynaptic D2 stimulation confers neuroprotective effects. This semisynthetic ergot derivative exhibits potent agonist activity on dopamine D2- and D3-receptors. It also exhibits agonist activity on dopamine D4, D1, and D5, 5-hydroxytryptamine (5-HT)1A, 5-HT1B, 5-HT1D, 5-HT2A, 5-HT2B, 5-HT2C, α2A-, α2B-, α2C-, α1A-, α1B-, and α1D-adrenergic receptors. Parkinsonian Syndrome manifests when approximately 80% of dopaminergic activity in the nigrostriatal pathway of the brain is lost. As this striatum is involved in modulating the intensity of coordinated muscle activity (e.g. movement, balance, walking), loss of activity may result in dystonia (acute muscle contraction), Parkinsonism (including symptoms of bradykinesia, tremor, rigidity, and flattened affect), akathesia (inner restlessness), tardive dyskinesia (involuntary muscle movements usually associated with long-term loss of dopaminergic activity), and neuroleptic malignant syndrome, which manifests when complete blockage of nigrostriatal dopamine occurs. High dopaminergic activity in the mesolimbic pathway of the brain causes hallucinations and delusions; these side effects of dopamine agonists are manifestations seen in patients with schizophrenia who have overractivity in this area of the brain. The hallucinogenic side effects of dopamine agonists may also be due to 5-HT2A agonism. The tuberoinfundibular pathway of the brain originates in the hypothalamus and terminates in the pituitary gland. In this pathway, dopamine inhibits lactotrophs in anterior pituitary from secreting prolactin. Increased dopaminergic activity in the tuberoinfundibular pathway inhibits prolactin secretion. Pergolide also causes transient increases in somatotropin (growth hormone) secretion and decreases in luteinizing hormone (LH) concentrations. Pergolide is not available for use by humans in the United States, but approved for veterinary use; it was used in various other countries for the treatment of various conditions including Parkinson's disease, hyperprolactinemia, and restless leg syndrome. Pergolide in Europe was indicated for Parkinson's disease only when other dopaminergic agonist treatments had failed, and treatment had to be initiated by a
neurologist. The label warned against using doses of more than 5mg a day, whether alone or in combination with levodopa. However the marketing of this drug finally stopped in France in May 2011 and sales elsewhere in Europe ceased eventually.
Status:
US Previously Marketed
Source:
21 CFR 310.545(a)(22)(ii) antifungal:diaper rash methylparaben
Source URL:
First approved in 1987
Source:
NDA019527
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Conditions:
Methylparaben (E number E218) is preservative in the food, cosmetic, and pharmaceutical industries. It is completely absorbed through the skin or after ingestion and and it is hydrolyzed to para-hydroxybenzoic acid, and metabolites are rapidly excreted in the urine. Methylparaben is on the FDA generally regarded as safe list.
Status:
US Previously Marketed
Source:
CHIBROXIN by MERCK
(1991)
Source URL:
First approved in 1986
Source:
NOROXIN by MERCK
Source URL:
Class (Stereo):
CHEMICAL (ABSOLUTE)
Norfloxacin is an antibacterial agent, It inhibits inhibits DNA synthesis by inhibiting DNA gyrase enzyme. Norfloxacin was approved in 1986 for treatment of urinary tract infections, gynecological infections, prostatitis, gonorhhea and bladder infections. In ophtalmology, norfloxacin is used for treatment of conjunctivitus.
Status:
US Previously Marketed
Source:
CHIBROXIN by MERCK
(1991)
Source URL:
First approved in 1986
Source:
NOROXIN by MERCK
Source URL:
Class (Stereo):
CHEMICAL (RACEMIC)
Norfloxacin is an antibacterial agent, It inhibits inhibits DNA synthesis by inhibiting DNA gyrase enzyme. Norfloxacin was approved in 1986 for treatment of urinary tract infections, gynecological infections, prostatitis, gonorhhea and bladder infections. In ophtalmology, norfloxacin is used for treatment of conjunctivitus.
Status:
US Previously Marketed
Source:
CHIBROXIN by MERCK
(1991)
Source URL:
First approved in 1986
Source:
NOROXIN by MERCK
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Norfloxacin is an antibacterial agent, It inhibits inhibits DNA synthesis by inhibiting DNA gyrase enzyme. Norfloxacin was approved in 1986 for treatment of urinary tract infections, gynecological infections, prostatitis, gonorhhea and bladder infections. In ophtalmology, norfloxacin is used for treatment of conjunctivitus.
Status:
US Previously Marketed
Source:
CHIBROXIN by MERCK
(1991)
Source URL:
First approved in 1986
Source:
NOROXIN by MERCK
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Norfloxacin is an antibacterial agent, It inhibits inhibits DNA synthesis by inhibiting DNA gyrase enzyme. Norfloxacin was approved in 1986 for treatment of urinary tract infections, gynecological infections, prostatitis, gonorhhea and bladder infections. In ophtalmology, norfloxacin is used for treatment of conjunctivitus.
Status:
US Previously Marketed
Source:
CHIBROXIN by MERCK
(1991)
Source URL:
First approved in 1986
Source:
NOROXIN by MERCK
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Norfloxacin is an antibacterial agent, It inhibits inhibits DNA synthesis by inhibiting DNA gyrase enzyme. Norfloxacin was approved in 1986 for treatment of urinary tract infections, gynecological infections, prostatitis, gonorhhea and bladder infections. In ophtalmology, norfloxacin is used for treatment of conjunctivitus.
Status:
US Previously Marketed
Source:
MAPROTILINE HYDROCHLORIDE by WATSON LABS
(1988)
Source URL:
First approved in 1980
Source:
LUDIOMIL by NOVARTIS
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Targets:
Maprotiline is a tetracyclic antidepressant with similar pharmacological properties to tricyclic antidepressants (TCAs). Similar to TCAs, maprotiline inhibits neuronal norepinephrine reuptake, possesses some anticholinergic activity, and does not affect monoamine oxidase activity. It differs from TCAs in that it does not appear to block serotonin reuptake. Maprotiline may be used to treat depressive affective disorders, including dysthymic disorder (depressive neurosis) and major depressive disorder. Maprotiline is effective at reducing symptoms of anxiety associated with depression. The mechanism of action of maprotiline is not precisely known. It does not act primarily by stimulation of the central nervous system and is not a monoamine oxidase inhibitor. The postulated mechanism of maprotiline is that it acts primarily by potentiation of central adrenergic synapses by blocking reuptake of norepinephrine at nerve endings. This pharmacologic action is thought to be responsible for the drug’s antidepressant and anxiolytic effects. The mean time to peak is 12 hours. The half-life of elimination averages 51 hours.