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Restrict the search for
levodopa
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The D-form of dihydroxyphenylalanine (D-dopa) is a less physiologic activity than the L-form. D-dopa can be converted to the active L form during unidirectional chiral inversion, at first, oxidatively deaminated by D-amino acid oxidase to its alpha-keto acid and then transaminated by dopa transaminase to L-dopa. D-dopa is commonly used experimentally to determine whether the pharmacological effects of levodopa are stereospecific.
Status:
US Previously Marketed
Source:
TPN by INTL MINERALS
(1961)
Source URL:
First approved in 1961
Source:
TPN by INTL MINERALS
Source URL:
Class (Stereo):
CHEMICAL (ABSOLUTE)
Targets:
Conditions:
Tyrosine (L-form) is a non-essential amino acid, which is primarily required for the protein synthesis. This amino acid is the precursor of dopamine, norepinephrine, and epinephrine; therefore the lower concentration of tyrosine could be a peripheral marker of the hyperdopaminergic condition hypothesized to explain psychosis. Tyrosine supplements can improve cognition, increase energy, reduce anxiety, reduce depression, reduce levels of pain.
Status:
Possibly Marketed Outside US
First approved in 1996
Source:
ANDA040069
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Conditions:
Creatinine is a product of metabolism of creatine phosphate, a molecule that serves as a rapidly mobilizable reserve of a brain and skeletal muscle. Creatinine is excreted by kidneys with little or no reabsorption. Serum creatinine is the most commonly used indicator of renal function.
Status:
Possibly Marketed Outside US
Source:
NCT02741947: Phase 4 Interventional Completed Parkinson Disease
(2014)
Source URL:
Class (Stereo):
CHEMICAL (RACEMIC)
Conditions:
Benserazide is a peripherally-acting aromatic L-amino acid decarboxylase (AADC) or DOPA decarboxylase inhibitor. Benserazide is only used in conjunction with L-dopa for the treatment of Parkinson's disease under the brand name Madopar in the UK. Madopar HBS (125 mg) is a controlled-release dosage form with 100 mg L-dopa and 25 mg benserazide.
Status:
US Approved Rx
(2013)
First approved in 1958
Class:
MIXTURE
