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FDA's Adverse Drug Reactions (ADRs)

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How to Find a Safety-Related Labeling Change

Search by Drug Name -- Brand or Generic:

Index  Of  Safety-Related Drug Labeling Change
Summaries Approved By FDA Center for Drug
Evaluation and Research - Year 2002

Go to:  http://www.fda.gov/medwatch/SAFETY/2002/index02.htm

For example:

Clozaril (clozapine)
Audience: Psychiatrists, Pharmacists
FDA and Novartis have strengthened the BOXED WARNING and WARNINGS sections of the prescribing information (PI) for Clozaril (clozapine) as follows: (1) The previously existing BOXED WARNING has been relocated to the beginning of the PI and revised to advise health care providers of the association of myocarditis with clozapine therapy; (2) A subsection has been added to the WARNINGS section entitled "Myocarditis" to provide data and clozapine treatment guidelines related to this issue.
[Feb 20, 2002 Letter - Novartis] PDF Format
[Feb 20, 2002
Revised Package Insert - Novartis] 112 kb PDF Format

Haloperidol

"Clinical studies of haloperidol did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not consistently identified differences between the elderly and younger patients. However, the prevalence of tardive dyskinesia appears to be highest among the elderly, especially elderly women (see WARNINGS, Tardive dyskinesia). Also, the pharmacokinetics of haloperidol in geriatric patients generally warrants the use of lower doses (see DOSAGE AND ADMINISTRATION

PROZAC (fluoxetine HCl) Pulvules

 SERAFEM (fluoxetine HCl) Pulvules

 [November 28, 2000: Eli Lilly]

 

DESCRIPTION:

New text in bolded italics:

Prozac (fluoxetine hydrochloride) is an antidepressant for oral administration; it is also marketed for the treatment of premenstrual dysphoric disorder (Sarafem , fluoxetine hydrochloride).

CONTRAINDICATIONS:

New text added to end of section:

ThioridazineThioridazine should not be administered with Prozac or within a minimum of 5 weeks after Prozac has been discontinued (see WARNINGS).

WARNINGS:
New text (in bolded italics) added to end of section:

Other patients have had systemic syndromes suggestive of serum sickness. Since the introduction of Prozac, systemic events, possibly related to vasculitis and including lupus-like syndrome, have developed in patients with rash. Although these events are rare, they may be serious, involving the lung, kidney, or liver. Death has been reported to occur

in association with these systemic events. Anaphylactoid events, including bronchospasm, angioedema, laryngospasm, and urticaria alone and in combination, have been reported. Pulmonary events, including inflammatory processes of varying histopathology and/or fibrosis, have been reported rarely. These events have occurred with dyspnea as the only preceding symptom. Whether these systemic events and rash have a common underlying cause or are due to different etiologies or pathogenic processes is not known. Furthermore, a specific underlying immunologic basis for these events has not been identified. Upon the appearance of rash or of other possibly allergic phenomena for which an alternative etiology cannot be identified, Prozac should be discontinued.

ADVERSE REACTIONS:
New subsection inserted between - "Associated with Discontinuation in US Placebo-Controlled Clinical Trials (excluding data from extensions of trials)-" and "Other Events Observed In All US Clinical Trials-"

Male and Female Sexual Dysfunction with SSRIs--Although changes in sexual desire, sexual performance, and sexual satisfaction often occur as manifestations of a psychiatric disorder, they may also be a consequence of pharmacologic treatment. In particular, some evidence suggests that SSRIs can cause such untoward sexual experiences. Reliable estimates of the incidence and severity of untoward experiences involving sexual desire, performance, and satisfaction are difficult to obtain, however, in part because patients and physicians may be reluctant to discuss them. Accordingly, estimates of the incidence of untoward sexual experience and performance, cited in product labeling, are likely to underestimate their actual incidence.

In patients enrolled in US depression, OCD, and bulimia placebo-controlled clinical trials, decreased libido was the only sexual side effect reported by at least 2% of patients taking fluoxetine (4% fluoxetine, < 1% placebo).

There have been spontaneous reports in women taking fluoxetine of orgasmic dysfunction, including anorgasmia. There are no adequate and well-controlled studies examining sexual dysfunction with fluoxetine treatment.

Priapism has been reported with all SSRIs. While it is difficult to know the precise risk of sexual dysfunction associated with the use of SSRIs, physicians should routinely inquire about such possible side effects.

OVERDOSAGE:

Section substantially revised and replaced with the following:

Human ExperienceWorldwide exposure to fluoxetine hydrochloride is estimated to be over 38 million patients (circa 1999). Of the 1578 cases of overdose involving fluoxetine hydrochloride, alone or with other drugs, reported from this population, there were 195 deaths Among 633 adult patients who overdosed on fluoxetine hydrochloride alone, 34 resulted in a fatal outcome, 378 completely recovered, and 15 patients experienced sequelae after overdosage, including abnormal accommodation, abnormal gait, confusion, unresponsiveness, nervousness, pulmonary dysfunction, vertigo, tremor, elevated blood pressure, impotence, movement disorder, and hypomania. The remaining 206 patients had an unknown outcome. The most common signs and symptoms associated with non-fatal overdosage were seizures, somnolence, nausea, tachycardia, and vomiting. The largest known ingestion of fluoxetine hydrochloride in adult patients was 8 grams in a patient who took fluoxetine alone and who subsequently recovered. However, in an adult patient who took fluoxetine alone, an ingestion as low as 520 mg has been associated with lethal outcome, but causality has not been established.

 Among pediatric patients (ages 3 months to 17 years), there were 156 cases of overdose involving fluoxetine alone or in combination with other drugs. Six patients died, 127 patients completely recovered, 1 patient experienced renal failure, and 22 patients had an unknown outcome. One of the six fatalities was a 9-year-old boy who had a history of OCD, Tourettes syndrome with tics, attention deficit disorder, and fetal alcohol syndrome. He had been receiving 100 mg of fluoxetine daily for 6 months in addition to clonidine, methylphenidate, and promethazine. Mixed-drug ingestion or other methods of suicide complicated all six overdoses in children that resulted in fatalities. The largest ingestion in pediatric patients was 3 grams which was non-lethal.

Other important adverse events reported with fluoxetine overdose (single or multiple drugs) include coma, delirium, ECG abnormalities (such as QT interval prolongation and ventricular tachycardia, including torsades de pointes-type arrhythmias), hypotension, mania, neuroleptic malignant syndrome-like events, pyrexia, stupor, and syncope.

 

And LOTS more......go to above and type in your medication to see ADR's posted by FDA