All You Need to Know About Paxil CR Chemistry & Pharmacology

Listed here is the chemistry & pharmacology of the anti-depressant Paxil CR.

Paroxetine is chemically identified as (Immediate-Release Tablets / Oral Suspension:) (-)-trans-4R-(4-fluorophenyl)-3S-[(3,4-methylenedioxyphenoxy) methyl]piperidine hydrochloride hemihydrate, or (Controlled-Release Tablets:) (-)-(3S,4R)-4-[(p-fluorophenyl)-3-[(3,4-methylenedioxy)phenoxy]methyl] piperidine hydrochloride hemihydrate. Its empirical formula is C₁₉H₂₀FNO₃, with a molecular weight of 374.8 (329.3703 as free base).

Paroxetine hydrochloride is an odorless, whitish powder, with a melting point range of 120° to 138°C and a solubility of 5.4 mg/mL in water.

Paxil Pharmacology

Paroxetine is a strong and selective serotonin (5-hydroxytryptamine, 5-HT) reuptake inhibitor (SSRI). This activity of the drug on brain neurons is thought to be responsible for its antidepressant effects.

Paroxetine is a phenylpiperidine derivative which is chemically unrelated to the tricyclic or tetracyclic antidepressants. In receptor binding studies, paroxetine did not exhibit significant affinity for the adrenergic (alpha(1), alpha(2), beta), dopaminergic, serotonergic (5HT(1), 5HT(2)), or histaminergic receptors of rat brain membrane. A weak affinity for the muscarinic acetylcholine receptor was apparent. The predominant metabolites of paroxetine are inactive as 5-HT reuptake inhibitors.

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see also:

Dangers for Pregnant Women An important warning: Paxil Dangers for Pregnant Women
Information for Pregnant Women - The dangers behind the drug Paxil

Withdrawal Symptoms Problems with Paxil - The Withdrawal Symptoms you may incur
Even going off Paxil is harmful - A list of withdrawal symptoms

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