Wikipedia
Alprazolam
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Systematic (IUPAC) name | |
---|---|
8-Chloro-1-methyl-6-phenyl-4H-[1,2,4]triazolo[4,3-a][1,4]benzodiazepine | |
Clinical data | |
Trade names | Xanax |
AHFS/Drugs.com | monograph |
MedlinePlus | a684001 |
Pregnancy cat. |
|
Legal status | |
High | |
Routes | Oral, Sublingual |
Pharmacokinetic data | |
Bioavailability | 80–90% |
Metabolism | Hepatic, via Cytochrome P450 3A4 |
Half-life | Immediate release: 11.2 hours,[1] Extended release: 10.7–15.8 hours[2] |
Excretion | Renal |
Identifiers | |
CAS number | 28981-97-7 |
ATC code | N05BA12 |
PubChem | CID 2118 |
DrugBank | DB00404 |
ChemSpider | 2034 |
UNII | YU55MQ3IZY |
KEGG | D00225 |
ChEBI | CHEBI:2611 |
ChEMBL | CHEMBL661 |
Chemical data | |
Formula | C17H13ClN4 |
Mol. mass | 308.765 |
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Alprazolam /ælˈpræzəlæm/ (trade name Xanax /zˈænæks/), available under other generic names, is a short-acting anxiolytic of the benzodiazepine class of psychoactive drugs. Alprazolam, like other benzodiazepines, binds to specific sites on the GABAAreceptor. Alprazolam is commonly used and FDA approved for the medical treatment of panic disorder, and anxiety disorders, such as generalized anxiety disorder (GAD) or social anxiety disorder (SAD).[3][4] Alprazolam is available for oral administration in compressed tablet (CT) and extended-release capsule (XR) formulations. Alprazolam possesses anxiolytic, sedative, hypnotic, skeletal muscle relaxant, anticonvulsant, and amnestic properties.[5]
Alprazolam has a fast onset of action and symptomatic relief. Ninety
percent of peak effects are achieved within the first hour of using
either in preparation for panic disorder, and full peak effects are achieved in 1.5 and 1.6 hours respectively.[6][7] Peak benefits achieved for generalized anxiety disorder (GAD) may take up to a week.[8][9] Tolerance to the anxiolytic/antipanic effects is controversial with some authoritative sources reporting the development of tolerance,[10] and others reporting no development of tolerance;[3][11] tolerance will however, develop to the sedative-hypnotic effects within a couple of days.[11] Withdrawal symptoms or rebound symptomsmay
occur after ceasing treatment abruptly following a few weeks or longer
of steady dosing, and may necessitate a gradual dose reduction.[8][12]
Alprazolam was first released by Upjohn (now a part of Pfizer). It is covered under U.S. Patent 3,987,052,
which was filed on 29 October 1969, granted on 19 October 1976, and
expired in September 1993. Alprazolam was released in 1981.[13] The
first approved indication was panic disorder and within two years of
its original marketing Upjohn's Xanax became a blockbuster drug in the
US. Presently, Alprazolam is the most prescribed[14] and the most misused benzodiazepine on the U.S. retail market.[15] The
potential for misuse among those taking it for medical reasons is
controversial with some expert reviews stating that the risk is low and
similar to that of other benzodiazepine drugs[3] and
others stating that there is a substantial risk of abuse and dependence
in both patients and non-medical users of alprazolam and that the
pharmacological properties of alprazolam, high affinity binding, high
potency, having a short elimination half-life as well as a rapid onset of action increase the misuse potential of alprazolam.[10][16] Compared
to the large number of prescriptions, relatively few individuals
increase their dose on their own initiative or engage in drug-seeking behavior.[17]Alprazolam is classified as a schedule IV controlled substance by the U.S. Drug Enforcement Administration(DEA).
Contents
Medical uses
Alprazolam is mostly used to treat anxiety disorders, panic disorders, and nausea due to chemotherapy.[16] The FDA label advises that the physician should periodically reassess the usefulness of the drug.[4] Alprazolam
may also be indicated for the treatment of generalized anxiety
disorder, as well as for the treatment of anxiety conditions with
co-morbid depression.[18] Alprazolam is also often prescribed with instances of hypersomnia and co-morbid sleep deficits.
Panic disorder
Alprazolam is effective in the relief of moderate to severe anxiety and panic attacks.[4] However, it is not a first line treatment since the development of selective serotonin reuptake inhibitors,
and alprazolam is no longer recommended in Australia for the treatment
of panic disorder due to concerns regarding tolerance, dependence and
abuse.[10] Evidence
supporting the effectiveness of alprazolam in treating panic disorder
has been limited to 4 to 10 weeks. However, people with panic disorder
have been treated on an open basis for up to 8 months without apparent
loss of benefit.[4][19]
In the United States, alprazolam is FDA-approved for the treatment of panic disorder with or without agoraphobia.[4] Alprazolam
is recommended by the World Federation of Societies of Biological
Psychiatry (WFSBP) for treatment-resistant cases of panic disorder where
there is no history of tolerance ordependence.[20]
Anxiety disorders
Anxiety associated with depression is responsive to alprazolam.
Demonstrations of the effectiveness by systematic clinical study are
limited to 4 months duration for anxiety disorder.[4] However,
the research into antidepressant properties of alprazolam is of poor
quality and only assessed the short-term effects of alprazolam against
depression.[21] In one study, some long term, high-dosage users of alprazolam developed reversible depression.[22] In the US, alprazolam is FDA-approved for the management of anxiety disorders (a condition corresponding most closely to the APA Diagnostic and Statistical ManualDSM-IV-TR diagnosis
of generalized anxiety disorder) or the short-term relief of symptoms
of anxiety. In the UK, alprazolam is recommended for the short-term
treatment (2–4 weeks) of severe acute anxiety.[19][23][24]
Nausea due to chemotherapy
Alprazolam may be used in combination with other medications for chemotherapy-induced nausea and vomiting.[16]
Pregnancy and lactation
Benzodiazepines cross the placenta, enter into the fetus and are also
excreted with breast milk. The use of benzodiazepines during pregnancy
or lactation has potential risks. The use of alprazolam in pregnancy is believed to be associated with congenital abnormalities. Diazepam and chlordiazepoxide have a better safety profile in pregnancy than alprazolam.
Women who are pregnant or are planning on becoming pregnant should avoid starting alprazolam.[25] Use in the last trimester may cause fetal drug dependence and withdrawal symptoms in the post-natal period[26] as well as neonatal flaccidity and respiratory problems.[27] However, in long-term users of benzodiazepines abrupt discontinuation due to concerns of teratogenesis has a high risk of causing extreme withdrawal symptoms and a severe rebound effect of the underlying mental health disorder. Spontaneous abortions may also result from abrupt withdrawal of psychotropic medications including benzodiazepines.[28]
Benzodiazepines, including alprazolam, are known to be excreted in human milk.[29] Chronic
administration of diazepam to nursing mothers has been reported to
cause their infants to become lethargic and to lose weight.[30][31]
Contraindications
Benzodiazepines require special precaution if used in children and in
alcohol- or drug-dependent individuals. Particular care should be taken
in pregnant or elderly patients, patients with substance abuse history,
particularly alcohol dependence and patients with comorbid psychiatric
disorders.[32] Use
of alprazolam should be avoided or carefully monitored by medical
professionals in individuals with the following conditions: myasthenia gravis, acute narrow-angleglaucoma, severe liver deficiencies (e.g., cirrhosis), severe sleep apnea, pre-existing respiratory depression, marked neuromuscular respiratory weakness including unstable myasthenia gravis, acute pulmonary insufficiency, chronic psychosis, hypersensitivity or allergy to alprazolam or other drugs in thebenzodiazepine class, borderline personality disorder (may induce suicidality and dyscontrol).[24][33][34][35]
Like all central nervous system depressants, including alcohol, alprazolam in larger-than-normal doses can cause significant deterioration in alertness, combined with increased feelings of drowsiness, especially in those unaccustomed to the drug's effects.[36] People
driving or conducting activities that require vigilance should exercise
caution in using alprazolam or any other depressant until they know how
it affects them.
Elderly individuals should be cautious in the use of alprazolam due to
the possibility of increased susceptibility to side-effects, especially
loss of coordination and drowsiness.[30]
Adverse effects
Allergic reactions are unlikely to occur. The only common side effect is sleepiness when treatment is initiated.
Possible side effects include:
- Disinhibition[37]
- Change in libido[38]
- Jaundice (very rare)[39]
- Hallucinations (rare)[40]
- Dry mouth (infrequent)[41]
- Ataxia, slurred speech[42]
- Suicidal ideation (rare)[33][43]
- Urinary retention (infrequent)[44]
- Skin rash, respiratory depression, constipation[45][46]
- Anterograde amnesia[47] and concentration problems
- Drowsiness, dizziness, lightheadedness, fatigue, unsteadiness and impaired coordination, vertigo[45][46]
Paradoxical reactions
Although unusual, the following paradoxical reactions have been shown to occur:
- Aggression[48]
- Rage, hostility[37]
- Twitches and tremor[49]
- Mania, agitation, hyperactivity and restlessness[50][51][52]
Food and drug interactions
Alprazolam is primarily metabolised via CYP3A4.[53] Combining CYP3A4 inhibitors such as cimetidine, erythromycin,fluoxetine, fluvoxamine, itraconazole, ketoconazole, nefazodone, propoxyphene, and ritonavir delay the hepatic clearance of alprazolam, which may result in excessive accumulation of alprazolam.[54] This may result in exacerbation of its adverse effect profile.[55][56]
Imipramine and desipramine have
been reported to be increased an average of 31% and 20%, respectively,
by the concomitant administration of alprazolam tablets in doses up to
4 mg/day.[57] Combined oral contraceptive pills reduce the clearance of alprazolam, which may lead to increased plasma levels of alprazolam and accumulation.[58]
Alcohol is
one of the most important and common interactions. Alcohol and
benzodiazepines such as alprazolam taken in combination have a
synergistic effect on one another, which can cause severe sedation,
behavioral changes, and intoxication. The more alcohol and alprazolam
taken the worse the interaction.[37] Combination of alprazolam with the herb kava can result in the development of a semi-comatose state.[59] Hypericum conversely can lower the plasma levels of alprazolam and reduce its therapeutic effect.[60][61][62]
Overdose
Main article: Benzodiazepine overdose
Overdoses of alprazolam can be mild to severe depending on how much of
the drug is taken and any other drugs that have been taken.[63]
Alprazolam overdoses cause excess central nervous system (CNS) depression and may include one or more of the following symptoms:[44]
- Somnolence (sleepy state)
- Hypotension (low blood pressure)
- Orthostatic hypotension (fainting while standing up too quickly)
- Hypoventilation (shallow breathing)
- Impaired motor functions
- Dizziness
- Impaired balance
- Muscle weakness
- Impaired or absent reflexes
- Fainting
- Coma and death are possible if alprazolam is combined with other substances.
In a study of deaths in Palm Beach County where the drug alprazolam was detected, approximately 50% of cases were attributed to poly-drug use (the combined toxicity of two or more drugs). The majority of these cases included either cocaine or methadone.
Alprazolam alone caused only 1% of the deaths. These results indicate
alprazolam has a very low incidence of causing death when taken alone.[64]
Dependence and withdrawal
See also: Benzodiazepine dependence and Benzodiazepine withdrawal syndrome
Alprazolam, like other benzodiazepines, binds to specific sites on the GABAA gamma-amino-butyric acid receptor.
When bound to these sites, which are referred to as benzodiazepine
receptors, it modulates the effect of GABA A receptors and, thus,
GABAergic neurons. Long-term use causes adaptive changes in the
benzodiazepine receptors, making them less sensitive to stimulation and
less powerful in their effects.[65]
Withdrawal and rebound symptoms commonly occur and necessitate a gradual reduction in dosage to minimize withdrawal effects when discontinuing.[8]
Not all withdrawal effects are evidence of true dependence or
withdrawal. Recurrence of symptoms such as anxiety may simply indicate
that the drug was having its expected anti-anxiety effect and that, in
the absence of the drug, the symptom has returned to pretreatment
levels. If the symptoms are more severe or frequent, the patient may be
experiencing a rebound effect due to the removal of the drug. Either of these can occur without the patient's actually being drug-dependent.[65]
Alprazolam and other benzodiazepines may also cause the development of physical dependence, tolerance, and benzodiazepine withdrawal symptoms during rapid dose reduction or cessation of therapy after long-term treatment.[66][67] There
is a higher chance of withdrawal reactions if the drug is administered
in a higher dosage than recommended, or if a patient stops taking the
medication altogether without slowly allowing the body to adjust to a
lower-dosage regimen.[68][69]
In 1992, Romach and colleagues reported that dose escalation is not a
characteristic of long-term alprazolam users, and that the majority of
long-term alprazolam users change their initial pattern of regular use
to one of symptom control only when required.[70]
Some common symptoms of alprazolam discontinuation include malaise,
weakness, insomnia, tachycardia, lightheadedness, and dizziness.[71]
Patients taking a dosing regimen larger than 4 mg per day have an
increased potential for dependence. This medication may cause withdrawal
symptoms upon abrupt withdrawal or rapid tapering, which in some cases
have been known to cause seizures. The discontinuation of this
medication may also cause a reaction called rebound anxiety.
Delirium similar to that produced by the tropane alkaloids (gaba antagonists) of Datura (scolopamine and atropine) and seizures have been anecdotally reported in the medical literature from abrupt alprazolam discontinuation.[72][73][74]
In a 1983 study of patients who had taken long-acting benzodiazepines, e.g., clorazepate,
for extended periods, the medications were stopped abruptly. Only 5% of
patients who had been taking the drug for less than 8 months
demonstrated withdrawal symptoms, but 43% of those who had been taking
them for more than 8 months did. With alprazolam – a short-acting
benzodiazepine – taken for 8 weeks, 35% of patients experienced
significant rebound anxiety. To some degree, these older benzodiazepines are self-tapering.[75]
The benzodiazepines diazepam (Valium) and oxazepam (Serepax) have been found to produce fewer withdrawal reactions than alprazolam (Xanax),temazepam (Restoril/Normison), or lorazepam (Temesta/Ativan). Factors that determine the risk of psychological dependence or physical dependence and the severity of the benzodiazepine withdrawal symptoms experienced
during dose reduction of alprazolam include: dosage used, length of
use, frequency of dosing, personality characteristics of the individual,
previous use of cross-dependent/cross-tolerant drugs (alcohol or other
sedative-hypnotic drugs), current use of cross-dependent/-tolerant
drugs, use of other short-acting, high-potency benzodiazepines,[76][77] and method of discontinuation.[68]
Detection in body fluids
Alprazolam may be quantitated in blood or plasma to confirm a diagnosis
of poisoning in hospitalized patients, provide evidence in an impaired
driving arrest or to assist in a medicolegal death investigation. Blood
or plasma alprazolam concentrations are usually in a range of 10–100
μg/L in persons receiving the drug therapeutically, 100–300 μg/L in
those arrested for impaired driving and 300–2000 μg/L in victims of
acute overdosage. Most commercial immunoassays for the benzodiazepine
class of drugs will cross-react with alprazolam, but confirmation and
quantitation is usually performed using chromatographic techniques.[78][79][80]
Pharmacology
Alprazolam is classed as a high-potency benzodiazepine and is a triazolobenzodiazepine,[81][82] namely a benzodiazepine with a triazole ring attached
to its structure. Benzodiazepines produce a variety of therapeutic and
adverse effects by binding to the benzodiazepine receptor site on the GABAA receptor and modulating the function of the GABA receptor,
the most prolific inhibitory receptor within the brain. The GABA
chemical and receptor system mediates inhibitory or calming effects of
alprazolam on the nervous system. The GABAA receptor is made up of 5 subunits out of a possible 19, and GABAA receptors
made up of different combinations of subunits, have different
properties, different locations within the brain, and, importantly,
different activities with regard to benzodiazepines.[47][83] Benzodiazepines and in particular alprazolam causes a marked suppression of the hypothalamicpituitary-adrenal axis. The therapeutic properties of alprazolam are similar to other benzodiazepines and include anxiolytic, anticonvulsant, muscle relaxant, hypnotic[84] and amnesic.[5]
Administration of alprazolam has been demonstrated to elicit an increase in striatum dopamine concentrations.[85]
Pharmacokinetics
Absorption
Following oral administration, alprazolam is readily absorbed. Peak
concentrations in the plasma occur in one to two hours following
administration. Plasma levels are proportionate to the dose given; over
the dose range of 0.5 to 3.0 mg, peak levels of 8.0 to 37 ng/mL were
observed. Using a specific assay methodology, the mean plasma
elimination half-life of alprazolam has been found to be about 11.2
hours (range: 6.3 to 26.9 hours) in healthy adults.
Distribution
In vitro, alprazolam is bound (80 percent) to human serum protein. Serum albumin accounts for the majority of the binding.
Metabolism/Elimination
Alprazolam is extensively metabolized in humans, primarily by cytochrome
P450 3A4 (Cyp3A4), to two major metabolites in plasma:
4-hydroxyalprazolam and α- hydroxyalprazolam. A benzophenone derived
from alprazolam is also found in humans. Half-lives are similar to that
of alprazolam. The plasma concentrations of 4-hydroxyalprazolam and
α-hydroxyalprazolam relative to unchanged alprazolam concentration were
always less than 4%. The reported relative potencies in benzodiazepines
receptor binding experiments and in animals models of induced seizure
inhibition are 0.2 and 0.66, respectively, for 4-hydroxyalprazolam and
α-hydroxyalprazolam. Such low concentrations and lesser potencies of
4-hydroxyalprazolam and α-hydroxyalprazolam suggest that they are
unlikely to contribute much to the pharmacological effects of
alprazolam. The benzophenone metabolite is essentially inactive.
Alprazolam and its metabolites are excreted primarily in the urine.
Forms of Alprazolam
Alprazolam regular release and orally disintegrating tablets are available as 0.25 mg, 0.5 mg, 1 mg, 2 mg strength tablets.[86]
Alprazolam extended release tablets are available as 0.5 mg, 1 mg, 2 mg, and 3 mg strength tablets.
Alprazolam oral solutions are available as 0.5 mg/5 mL and as 1 mg/1 mL oral solutions.
- Active ingredient: alprazolam
- Inactive ingredients: microcrystalline cellulose, corn starch, docusate sodium, povidone, sodium starch glycollate, lactose monohydrate, magnesium stearate, colloidal silicon dioxide and sodium benzoate. In addition, the 0.25 mg tablet contains D&C Yellow No. 10 and the 0.5 mg tablet contains FD&C Yellow No. 6 and D&C Yellow No. 10
Chemistry
Alprazolam is a chemical analog of triazolam that differs by the absence of a chlorine atom in the o-position of the 6-phenyl ring. The same scheme that was used to make triazolam can be used to make alprazolam, with the exception that it begins with 2-amino-5-chlorobenzophenone.[87][88][89] However,
a non-standard way of making alprazolam has been suggested, which comes
from 2,6-dichloro-4-phenylquinoline, the reaction of which with
hydrazine gives 6-chloro-2-hydrazino-4-phenylquinoline. Boiling this
with triethyl orthoacetate in xylene leads to the heterocyclization into a triazole derivative. The resulting product undergoes oxidative cleavage using sodium periodate and ruthenium dioxide in an acetone–water system to give 2-[4-(3′-methyl-1,2,4-triazolo)]-5-chlorobenzophenone.[90][91][92] Oxymethylation of the last using formaldehyde and subsequent substitution of the resulting hydroxyl group by phosphorus tribromide,gives 2-[4-(3′-methyl-5′-bromomethyl-1,2,4-triazolo)]-5-chlorobenzophenone. Substitution of the bromine atom with an amino group using ammoniaand the spontaneous, intramolecular heterocyclization following that reaction gives alprazolam.
Society and culture
Recreational use
See also: Benzodiazepine misuse
There is a risk of misuse and dependence in both patients and
non-medical users of alprazolam; the pharmacological properties of
alprazolam such as high affinity binding, high potency, being
short-acting and having a rapid onset of action increase the abuse
potential of alprazolam. The physical dependence and withdrawal syndrome
of alprazolam also adds to the addictive nature of alprazolam. In the
small subgroup of individuals who escalate their doses there is usually a
history of alcohol or other substance use disorders.[10] Despite
this, most prescribed alprazolam users do not misuse their medication,
and the long-term use of benzodiazepines does not generally correlate
with the need for dose escalation.[93] However,
based on US findings from the Treatment Episode Data Set (TEDS), an
annual compilation of patient characteristics in substance abuse
treatment facilities in the United States, admissions due to "primary
tranquilizer" (including, but not limited to, benzodiazepine-type) drug
use increased 79% from 1992 to 2002, suggesting that misuse of
benzodiazepines may be on the rise.[94] The New York Times also
reported in 2011 that "The Centers for Disease Control and Prevention
last year reported an 89 percent increase in emergency room visits
nationwide related to nonmedical benzodiazepine use between 2004 and
2008."[95]
Alprazolam is one of the most commonly prescribed and misused benzodiazepines in the United States.[12][15] A large-scale nationwide U.S. government study conducted by SAMHSA found
that, in the U.S., benzodiazepines are recreationally the most
frequently used pharmaceuticals due to their widespread availability,
accounting for 35% of all drug-related visits to hospital emergency and
urgent care facilities. Men and women are equally likely to use
benzodiazepines recreationally. The report found that alprazolam is the
most common benzodiazepine for recreational use followed by clonazepam,lorazepam, and diazepam. The number of emergency room visits due to benzodiazepines increased by 36% between 2004 and 2006.[15]
At a particularly high risk for misuse and dependence are people with a history of alcoholism or drug abuse and/or dependence[96][97] and people withborderline personality disorder.[98]
Alprazolam, along with other benzodiazepines, is often used with other
recreational drugs. These uses include aids to relieve the panic or
distress of dysphoric("bad trip") reactions to psychedelic drugs, such as LSD, and the drug-induced agitation and insomnia in the "comedown" stages of stimulant use, such asamphetamine, cocaine, and phencyclidine allowing sleep. Alprazolam may also be used in conjunction with other depressant drugs, such as alcohol, heroin or other opiates, in an attempt to enhance the psychological effect of these drugs.
The poly-drug use of
powerful depressant drugs poses the highest level of health concerns
due to a significant increase in the likelihood of experiencing anoverdose which may result in fatal respiratory depression.[99][100]
A 1990 study claimed that diazepam has a higher misuse potential
relative to other benzodiazepines, and that some data suggests that
alprazolam and lorazepam resemble diazepam in this respect.[101]
Anecdotally injection of alprazolam has been reported, causing dangerous
damage to blood vessels, closure of blood vessels (embolization) and
decay of muscle tissue (rhabdomyolysis).[102] Alprazolam is practically not soluble in water, when crushed in water it will not fully dissolve (40 µg/ml of H2O at pH 7).[103] There have also been anecdotal reports of alprazolam being snorted.[104] Due
to the low weight of a dose, alprazolam in one case was found to be
distributed on blotter paper in a manner similar to LSD.[105]
Slang terms for alprazolam vary from place to place. Some of the more
common terms are shortened versions of the trade name "Xanax", such as
Xanbars or Zannies; references to their drug classes, such as benzos or
downers; or remark upon their shape or color (most commonly a straight,
perforated tablet or an oval-shaped pill): bars, Z-bars, footballs,
planks, blues, or blue footballs.[106][107][108]
Availability
Alprazolam is available in English-speaking countries under the following brand names:[109]
- Alprax, Alprocontin, Alzam, Alzolam, Anzilum, Apo-Alpraz, Kalma, Mylan-Alprazolam, Niravam, Novo-Alprazol, Nu-Alpraz, Pacyl, Restyl, Tranax, Trika, Xycalm, Xanax, Xanor, Zolam, Zopax, Helex.
As of December 2013, in anticipation of the rescheduling of alprazolam
to Schedule 8 in Australia—Pfizer Australia announced they would be
discontinuing the Xanax brand in Australia as it is no longer
commercially viable.[110]
Legal status
In the United States, alprazolam is a prescription drug and is assigned to Schedule IV of the Controlled Substances Act by the Drug Enforcement Administration.[111] Under the UK drug misuse classification system benzodiazepines are class C drugs (Schedule 4).[112] In the UK, alprazolam is not available on the NHS and can only be obtained on a private prescription.[113] Internationally, alprazolam is included under the United Nations Convention on Psychotropic Substances as Schedule IV.[114] In Ireland, alprazolam is a Schedule 4 medicine.[115] In Sweden, alprazolam is a prescription drug in List IV (Schedule 4) under the Narcotics Drugs Act (1968).[116] In the Netherlands, alprazolam is a List 2 substance of the Opium Law and is available for prescription. In Australia,
alprazolam was originally a Schedule 4 (Prescription Only) medication;
however, as of February 2014, it has become a Schedule 8 medication,
subjecting it to more rigorous prescribing requirements.[117]
1 comment:
Can past methadone use cause you to od? How can this be explained?I also take klonopin with my methadone both my methadone clinic and psych Dr are on the same page as adjustments to my medications were made. Lastly it's a sad fact that there will always be people who abuse their pain and anxiety meds and a lot of time they pay the price with their life. But there are also thousands of people that methadone is a Godsend and without who knows how many of those people would be dead without it.how long does alcohol stay in urine
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