Paxil is used to treat mental depression, obsessive-compulsive disorder, panic disorder, generalized anxiety disorder, social anxiety disorder, premenstrual dysphoric disorder (PMDD), and posttraumatic stress disorder (PTSD).
Paxil belongs to a group of medicines known as Selective Serotonin Reuptake Inhibitors (SSRIs). These medicines are thought to work by increasing the activity of serotonin in the brain.
Be sure to tell your doctor of any allergies you have whether it is to medication or food, preservatives, or dyes. Tell your doctor immediately if you are, or become pregnant, or are breastfeeding,. Also, tell your doctor of any other medications you are taking, including vitamins and supplements, and any medical conditions you may have.
It is very important that you take this medicine exactly as your doctor tells you to. Do not take more or less medicine than directed, and never stop taking Paxil without discussing it with your doctor first.
If you miss a dose of this medicine, take it as soon as you remember, unless it is almost time for your next dose. Do NOT double doses.
Tell your doctor as soon as possible if any of the following side effects occur: agitation; chest congestion; chest pain; chills; cold sweats; confusion; difficulty breathing; dizziness, faintness, or lightheadedness when getting up from a lying or sitting position; fast, pounding, or irregular heartbeat or pulse; muscle pain or weakness; skin rash; absence of or decrease in body movements; bigger, dilated, or enlarged pupils; difficulty in speaking; inability to move eyes; incomplete, sudden, or unusual body or facial movements; increased sensitivity of eyes to light; low blood sodium (confusion, convulsions, drowsiness, dryness of mouth, increased thirst, lack of energy); red or purple patches on skin; serotonin syndrome (confusion, diarrhea, fever, poor coordination, restlessness, shivering, sweating, talking and acting with excitement you cannot control, trembling or shaking, twitching); talking, feeling, and acting with excitement and activity you cannot control.
PAXIL (paroxetine hydrochloride) is an orally administered psychotropic drug. It is the hydrochloride salt of a phenylpiperidine compound identified chemically as (-)-trans-4R-(4'-fluorophenyl)-3S-[(3',4'-methylenedioxyphenoxy) methyl] piperidine hydrochloride hemihydrate and has the empirical formula of C19H20FNO3·HCl·1/2H2O. The molecular weight is 374.8 (329.4 as free base). Paroxetine hydrochloride is an odorless, off-white powder, having a melting point range of 120° to 138°C and a solubility of 5.4 mg/mL in water. Each film-coated tablet contains paroxetine hydrochloride equivalent to paroxetine as follows: 10 mg–yellow (scored); 20 mg–pink (scored); 30 mg–blue, 40 mg–green. Inactive ingredients consist of dibasic calcium phosphate dihydrate, hypromellose, magnesium stearate, polyethylene glycols, polysorbate 80, sodium starch glycolate, titanium dioxide, and 1 or more of the following: D&C Red No. 30, D&C Yellow No. 10, FD&C Blue No. 2, FD&C Yellow No. 6.
Paxil has the following structural formula: