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The major limitation of SSRIs concerns their delay of action. It appears that the clinical efficacy of SSRIs becomes evident only after a few weeks. [225] SSRIs can be combined with a host of other drugs including bupropion, α 2 adrenergic antagonists (e.g., yohimbine) as well as some of the atypical antipsychotics. The augmentation agents are ...
Inhibition of GABA transaminase enzymes reduces the degradation of GABA, leading to increased neuronal GABA concentrations. Examples include valproic acid , [ 2 ] vigabatrin , [ 3 ] [ 4 ] phenylethylidenehydrazine (and drugs that metabolize to it, such as phenelzine [ 5 ] ), ethanolamine- O -sulfate (EOS), and L- cycloserine .
A GABA reuptake inhibitor (GRI) is a type of drug which acts as a reuptake inhibitor for the neurotransmitter gamma-Aminobutyric acid (GABA) by blocking the action of the gamma-Aminobutyric acid transporters (GATs). This in turn leads to increased extracellular concentrations of GABA and therefore an increase in GABAergic neurotransmission. [1]
Zoloft – an antidepressant of the SSRI class; Zonegran (zonisamide) – an anticonvulsant used to treat other seizures; Zulresso (brexanolone) – a GABA modulator antidepressant; Zyban (bupropion) – same active ingredient as Wellbutrin, but marketed as a smoking cessation aid
Gamma-aminobutyric acid, a GABA-B receptor agonist. A GABA receptor agonist is a drug that is an agonist for one or more of the GABA receptors, producing typically sedative effects, and may also cause other effects such as anxiolytic, anticonvulsant, and muscle relaxant effects. [1] There are three receptors of the gamma-aminobutyric acid. The ...
GABA receptor antagonists are drugs that inhibit the action of GABA. In general these drugs produce stimulant and convulsant effects, and are mainly used for counteracting overdoses of sedative drugs. Examples include bicuculline, securinine and metrazol, and the benzodiazepine GABA A receptor antagonist flumazenil.
This is a list of investigational antidepressants, or drugs that are currently under development for clinical use in the treatment of depression but are not yet approved. Specific indications include major depressive disorder , treatment-resistant depression , dysthymia , bipolar depression , and postpartum depression , among others.
Cross-tolerance is a phenomenon that occurs when tolerance to the effects of a certain drug produces tolerance to another drug. It often happens between two drugs with similar functions or effects—for example, acting on the same cell receptor or affecting the transmission of certain neurotransmitters.