|
![]() |
|
|
Elavil: profile and news
Ex-ghostbuster seeks to become chart-buster Mar 5, 2006 Antidepressants and your libido Feb 28, 2006 ANIMAL DOCTOR Are nuts good as bird feed? Feb 3, 2006 Study Finds Cymbalta® Was As Safe And Well-Tolerated As Routine ... Feb 20, 2006 Ky. cabbie was high, police say Feb 9, 2006 Consumer Reports Medical Guide Addresses Differing Side Effects of ... Feb 10, 2006 Study: Antidepressants pose risks for newborns 09 Feb 2006 Ky. cabbie was high, police say 09 Feb 2006 ANIMAL DOCTOR Are nuts good as bird feed? Feb 3, 2006 Ask Dr. H | Old-timey ailments with quaint names Jan 16, 2006 Old disease names altered over time Ask Dr. H Mitchell Hecht Jan 17, 2006 Exact cause of restless legs is unknown Jan 9, 2006 I Thank You Jan 13, 2006 Your Health … Can’t seem to get your zzz’s? Stop suffering ... Jan 9, 2006 Prescription painkillers are gaining addicts -- and casualties 11 Dec 2005 Most Tolerable Antidepressant May Not be Most Efficacious Dec 8, 2005 Experts say Prozac might not be the most effective antidepressant Dec 8, 2005 Prozac: Popular, but not potent? Dec 7, 2005 MEMBER EXCHANGE: Schizophrenic who killed parents strives for ... Nov 27, 2005 Ask the Clinician: Answers to Readers' Questions Oct 4, 2005 Chronic fatigue: Strictly biological? Oct 3, 2005 Creator of Valium Dies at 97 Sep 30, 2005 Apple Cider Vinegar: Alternative Medicine Miracle Sep 22, 2005 Many meds don't mix with the sun Sep 21, 2005 Chronic fatigue syndrome: a little-understood disease Sep 9, 2005 Childhood Depression Is Understudied and Under-treated Sep 9, 2005 Antidepressants continue to be linked to suicidal thoughts 08 Sep 2005 Research clarifies true chronic fatigue Sep 7, 2005 Acmemeds.com Improves Itself With 101 New Added Medications Aug 20, 2005 Anxious cats and dogs Aug 26, 2005 The Summer He Didn't Die Aug 13, 2005 "The Summer He Didn't Die": Novellas filled with humanity, wisdom Aug 19, 2005 Best Treatments for Lasting Shingles Pain Jul 25, 2005 Missoula inmates upset over medications Jul 23, 2005 Sleepwalking Can Be a Walk on the Wild Side Jul 11, 2005 Sleepwalking Can Be a Walk on the Wild Side 11 Jul 2005 Myers denied bail Jul 2, 2005 No escaping now Jul 2, 2005 More than Just Melancholy in Mothers-to-Be Jun 30, 2005 Other information Indication For the relief of symptoms of depression and Enuresis in children Pharmacology Amitriptyline, a tertiary amine tricyclic antidepressant, is structurally related to both the skeletal muscle relaxant cyclobenzaprine and the thioxanthene antipsychotics such as thiothixene. Amitriptyline is used to treat depression, pain of neuropathic origin, attention-deficit hyperactivity disorder, functional enuresis in children, panic and phobic disorder, and to manage some eating disorders. Mechanism Of Action Amitriptyline is metabolized to nortriptyline which acts by decreasing the reuptake of norepinephrine and serotonin (5-HT). Drug Category Analgesics; Antidepressants; Norepinephrine-Reuptake Inhibitors; ATC:N06AA09 Brand Names/Synonyms Adepress; Adepril; Amineurin; Amitid; Amitril; Amitriprolidine; Amitriptylin; Amitriptyline; Amitriptyline Hcl; Amitriptyline Hydrochloride; Amitryptiline; Amitryptyline; Amytriptiline; Damilan; Damilen; Damitriptyline; Deprex; Dibenzosuberone/Amitriptyline; Domical; Elanil; Elavil; Endep; Flavyl; HSDB 3007; Hexathane; Horizon; Hydrochloride; Lantron; Laroxil; Laroxyl; Lentizol; MK 230; MK-230; Miketorin; N 750; Proheptadiene; Redomex; Saroten; Sarotex; Seroten; Sylvemid; Triptanol; Triptilin; Triptisol; Tryptanol; Tryptizol Dosage Forms SYRUP; TABLET Absorption Rapidly and well absorbed after oral administration Interactions -->Interactions for Amitriptyline: Drugs Metabolized by P450 2D6 ¾ The biochemical activity of the drug metabolizing isozyme cytochrome P450 2D6 (debrisoquin hydroxylase) is reduced in a subset of the caucasian population (about 7-10% of caucasians are so called "poor metabolizers"); reliable estimates of the prevalence of reduced P450 2D6 isozyme activity among Asian, African and other populations are not yet available. Poor metabolizers have higher than expected plasma concentrations of tricyclic antidepressants (TCAs) when given usual doses. Depending on the fraction of drug metabolized by P450 2D6, the increase in plasma concentration may be small, or quite large (8-fold increase in plasma AUC of the TCA). In addition, certain drugs inhibit the activity of this isozyme and make normal metabolizers resemble poor metabolizers. An individual who is stable on a given dose of TCA may become abruptly toxic when given one of these inhibiting drugs as concomitant therapy. The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics propafenone and flecainide). While all the selective serotonin reuptake inhibitors (SSRIs), e.g., fluoxetine, sertraline, and paroxetine, inhibit P450 2D6, they may vary in the extent of inhibition. The extent to which SSRI-TCA interactions may pose clinical problems will depend on the degree of inhibition and the pharmacokinetics of the SSRI involved. Nevertheless, caution is indicated in the coadministration of TCAs with any of the SSRIs and also in switching from one class to the other. Of particular importance, sufficient time must elapse before initiating TCA treatment in a patient being withdrawn from fluoxetine, given the long half-life of the parent and active metabolite (at least 5 weeks may be necessary). Concomitant use of tricyclic antidepressants with drugs that can inhibit cytochrome P450 2D6 may require lower doses than usually prescribed for either the tricyclic antidepressant or the other drug. Furthermore, whenever one of these other drugs is withdrawn from co-therapy, an increased dose of tricyclic antidepressant may be required. It is desirable to monitor TCA plasma levels whenever a TCA is going to be coadministered with another drug known to be an inhibitor of P450 2D6. Monoamine Oxidase Inhibitors: Guanethidine or similarly acting compounds; thyroid medication; alcohol, barbiturates and other CNS depressants; and disulfiram When amitriptyline HCl is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. Hyperpyrexia has been reported when amitriptyline HCl is administered with anticholinergic agents or with neuroleptic drugs, particularly during hot weather. Paralytic ileus may occur in patients taking tricyclic antidepressants in combination with anticholinergic-type drugs. Cimetidine is reported to reduce hepatic metabolism of certain tricyclic antidepressants, thereby delaying elimination and increasing steady-state concentrations of these drugs. Clinically significant effects have been reported with the tricyclic antidepressants when used concomitantly with cimetidine. Increases in plasma levels of tricyclic antidepressants, and in the frequency and severity of side effects, particularly anticholinergic, have been reported when cimetidine was added to the drug regimen. Discontinuation of cimetidine in well-controlled patients receiving tricyclic antidepressants and cimetidine may decrease the plasma levels and efficacy of the antidepressants. Caution is advised if patients receive large doses of ethchlorvynol concurrently. Transient delirium has been reported in patients who were treated with one gram of ethchlorvynol and 75 - 150 mg of amitriptyline HCl. Chemical IUPAC Name 3-(10,11-dihydro-5H-dibenzo-[a,d]cyclohepten-5-ylidene)-N,N-dimethyl-1-propanamine Chemical Formula C20H23N Half Life 30 hours Drug Type Approved Drug # Accession No APRD00227 CAS Registry Number 50-48-6 |
|
Home | About | Cancers | Treatment | Medications Copyright onconews.org 2005. All Rights Reserved. |