 It frequently takes two to four weeks for antidepressants to begin having an effect, and 6-12 weeks for antidepressants to have their full effect of the imbalances in neurotransmitters like serotonin, dopamine, and norepinephrine. Four groups of antidepressant medications are most frequently prescribed for depression:
• Selective serotonin reuptake inhibitors (SSRIs) are the most widespread agents prescribed for depression. They perform specially on the neurotransmitter serotonin and chunk the reuptake of serotonin from the synapse to the nerve, therefore synthetically increasing the serotonin that is obtainable in the synapse. SSRIs include fluoxetine (Prozac), sertraline (Zoloft), paroxetine (Paxil), citalopram (Celexa), escitalopram (Lexapro), and fluvoxamine (Luvox).
• Serotonin and norepinephrine reuptake inhibitors (SNRIs) are the second-most well-liked antidepressants. They block the reuptake of both serotonin and norepinephrine from the synapse into the nerve. SNRIs comprise venlafaxine (Effexor) and duloxetine (Cymbalta).
• Bupropion (Wellbutrin) is an extremely accepted antidepressant medication classified as a norepinephrine-dopamine reuptake inhibitor (NDRI). It takes action by blocking the reuptake of dopamine and norepinephrine.
• Mirtazapine (Remeron) works in a different way from the mixs discussed above. It targets exact serotonin and norepinephrine receptors in the brain, consequently not directly increasing the activity of some brain circuits.
• Tricyclic antidepressants (TCAs) are older and seldom used now as first-line treatment. They work likewise to the SNRIs, but have other neurochemical properties which result in very high side effect rates, as compared to approximately all other antidepressants. They comprise amitriptyline (Elavil, Limbitrol), desipramine (Norpramin), doxepin (Sinequan), imipramine (Norpramin, Tofranil), nortriptyline (Pamelor, Aventyl), and protriptyline (Vivactil).
• Monoamine oxidase inhibitors (MAOIs) are also seldom used now. They act by inactivating enzymes in the brain which catabolize serotonin, norepinephrine, and dopamine from the synapse, consequently increasing the levels of these chemicals in the brain. Nevertheless, they are the least secure antidepressants to use, because they have significant medication interactions and require devotion to a meticulous diet. They comprise phenelzine (Nardil), isocarboxazid (Marplan), and tranylcypromine sulfate (Parnate).
• Non-antidepressant adjunctive agents. Frequently psychiatrists unite the antidepressants mentioned above with each other or with agents which are not antidepressants themselves. These latter agents can include the atypical antipsychotic agents [aripiprazole (Abilify), olanzapine (Zyprexa), quetiapine (Seroquel), ziprasidone (Geodon), risperidone (Risperdal)], buspirone (Buspar), thyroid hormone (triiodothyonine, or “T3”), the stimulants [methylphenidate (Ritalin), dextroaphetamine (Aderall)], dopamine receptor agonists [pramipexole (Mirapex), ropinirole (Requipp)], lithium, lamotrigine (Lamictal), s-adenosyl methionine (SAMe), pindolol, and steroid hormones (testosterone, estrogen, DHEA).
Consumers and their families must be cautious during the early stages of medication treatment for the reason that usual energy levels and the capability of taking action frequently return before mood improves.
| 
