Medication: Xanax – (alprazolam)
4. Possible side effects, warnings, and cautions associated with this medication are listed below. This is not an all-inclusive list but is
representative of items of potential clinical significance to you. For more information on this medication, you may consult further with your
physician or refer to a standard text, such as the PDR. As part of monitoring some of these potential side effects, your physician may
order laboratory or other tests. The treatment team will closely monitor individuals who are unable to readily communicate side effects in
order to enhance care and treatment.
Continued – Possible side effects, warnings, and cautions associated with this medication.
Other Less common side effects include: Accidental injury; bladder pain; bloody or cloudy urine; blurred vision; changes in sexual desire or
decreased sexual ability; constipation; cramps; diarrhea; difficult, burning, or painful urination; difficulty in speaking; dizziness or
lightheadedness; dryness of mouth or unpleasant taste; fast or pounding heartbeat; frequent urge to urinate; headache; heavy bleeding with
menstrual period; inability to have or keep an erection; increased sensitivity of skin to sunlight; increased sweating; itching, redness or other
discoloration of skin; loss of appetite; lower back or side pain; nausea or vomiting; pain; severe sunburn; sleepiness or unusual drowsiness;
tooth disorder; twitching; weight loss; memory impairment; insomnia.
Rare side effects include: Abnormal thinking, including disorientation, delusions (holding false beliefs that cannot be changed by facts), or
loss of sense of reality; agitation; behavior changes, including aggressive behavior, bizarre behavior, decreased inhibition, or outbursts of
anger; convulsions (seizures); hallucinations (seeing, hearing, or feeling things that are not there); hypotension (low blood pressure); muscle
weakness; skin rash or itching; sore throat, fever, and chills; trouble in sleeping; ulcers or sores in mouth or throat (continuing); uncontrolled
movements of body, including the eyes; double vision; unusual bleeding or bruising; unusual excitement, nervousness, or irritability; unusual
tiredness or weakness (severe); yellow eyes or skin.
Risks from concomitant use with opioids:
Concomitant use of benzodiazepines and opioids may result in profound sedation, respiratory depression, coma, and death. Reserve
concomitant prescribing of these drugs for use in patients for whom alternative treatment options are inadequate. Limit dosages and
durations to the minimum required. Follow patients for signs and symptoms of respiratory depression and sedation.
WARNING
Dependence and Withdrawal Reactions, Including Seizures.
Certain adverse clinical events, some life threatening, are a direct consequence of physical dependence to alprazolam. These include a
spectrum of withdrawal symptoms; the most important is seizure. Even after relatively short-term use at the doses recommended for the
treatment of transient anxiety and anxiety disorder (i.e., 0.75 to 4.0 mg per day), there is some risk of dependence. Spontaneous reporting
system data suggest that the risk of dependence and its severity appear to be greater in patients treated with doses greater than 4 mg/day
and for long periods (more than 12 weeks). However, in a controlled postmarketing discontinuation study of panic disorder patients, the
duration of treatment (3 months compared to 6 months) had no effect on the ability of patients to taper to zero dose. In contrast, patients
treated with doses of alprazolam greater than 4 mg/day had more difficulty tapering to zero dose than those treated with less than 4 mg/day.
The importance of dose and the risks of Alprazolam as a treatment for panic disorder.
Because the management of panic disorder often requires the use of average daily doses of alprazolam above 4 mg, the risk of dependence
among panic disorder patients may be higher than that among those treated for less severe anxiety. Experience in randomized placebo-
controlled discontinuation studies of patients with panic disorder showed a high rate of rebound and withdrawal symptoms in patients treated
with alprazolam compared to placebo-treated patients.
Relapse or return of illness was defined as a return of symptoms characteristic of panic disorder (primarily panic attacks) to levels
approximately equal to those seen at baseline before active treatment was initiated. Rebound refers to a return of symptoms of panic
disorder to a level substantially greater in frequency, or more severe in intensity than seen at baseline. Withdrawal symptoms were identified
as those which were generally not characteristic of panic disorder and which occurred for the first time more frequently during discontinuation
than at baseline.
In a controlled clinical trial in which 63 patients were randomized to alprazolam and where withdrawal symptoms were specifically sought, the
following were identified as symptoms of withdrawal: heightened sensory perception, impaired concentration, dysosmia, clouded sensorium,
paresthesias, muscle cramps, muscle twitch, diarrhea, blurred vision, appetite decrease, and weight loss. Other symptoms, such as anxiety
and insomnia, were frequently seen during discontinuation, but it could not be determined if they were due to return of illness, rebound, or
withdrawal.
In two controlled trials of 6 to 8 weeks duration where the ability of patients to discontinue medication was measured, 71%–93% of patients
treated with alprazolam tapered completely off therapy compared to 89%–96% of placebo-treated patients. In a controlled postmarketing
discontinuation study of panic disorder patients, the duration of treatment (3 months compared to 6 months) had no effect on the ability of
patients to taper to zero dose.
Seizures attributable to alprazolam were seen after drug discontinuance or dose reduction in 8 of 1980 patients with panic disorder or in
patients participating in clinical trials where doses of alprazolam greater than 4 mg/day for over 3 months were permitted. Five of these cases
clearly occurred during abrupt dose reduction or discontinuation from daily doses of 2 to 10 mg. Three cases occurred in situations where
there was not a clear relationship to abrupt dose reduction or discontinuation. In one instance, seizure occurred after discontinuation from a
single dose of 1 mg after tapering at a rate of 1 mg every 3 days from 6 mg daily. In two other instances, the relationship to taper is