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Year : 2013  |  Volume : 22  |  Issue : 2  |  Page : 100-108  Table of Contents     

Clinical management of alcohol withdrawal: A systematic review

Department of Psychiatry, Regional Deaddiction Center, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India

Date of Web Publication21-May-2014

Correspondence Address:
Balaji Bharadwaj
Department of Psychiatry, Regional Deaddiction Center, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry - 605 006
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-6748.132914

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Alcohol withdrawal is commonly encountered in general hospital settings. It forms a major part of referrals received by a consultation-liaison psychiatrist. This article aims to review the evidence base for appropriate clinical management of the alcohol withdrawal syndrome. We searched Pubmed for articles published in English on pharmacological management of alcohol withdrawal in humans with no limit on the date of publication. Articles not relevant to clinical management were excluded based on the titles and abstract available. Full-text articles were obtained from this list and the cross-references. There were four meta-analyses, 9 systematic reviews, 26 review articles and other type of publications like textbooks. Alcohol withdrawal syndrome is a clinical diagnosis. It may vary in severity. Complicated alcohol withdrawal presents with hallucinations, seizures or delirium tremens. Benzodiazepines have the best evidence base in the treatment of alcohol withdrawal, followed by anticonvulsants. Clinical institutes withdrawal assessment-alcohol revised is useful with pitfalls in patients with medical comorbidities. Evidence favors an approach of symptom-monitored loading for severe withdrawals where an initial dose is guided by risk factors for complicated withdrawals and further dosing may be guided by withdrawal severity. Supportive care and use of vitamins is also discussed.

Keywords: Alcohol withdrawal delirium, alcohol withdrawal seizures, alcoholism, clinical management, drug therapy

How to cite this article:
Kattimani S, Bharadwaj B. Clinical management of alcohol withdrawal: A systematic review. Ind Psychiatry J 2013;22:100-8

How to cite this URL:
Kattimani S, Bharadwaj B. Clinical management of alcohol withdrawal: A systematic review. Ind Psychiatry J [serial online] 2013 [cited 2023 Jan 30];22:100-8. Available from: https://www.industrialpsychiatry.org/text.asp?2013/22/2/100/132914

Alcohol dependence is a severe form of alcohol use disorder and it may first manifest when a person develops withdrawal symptoms after stopping alcohol - either due to family pressure, self-motivation, physical ill health or difficulty in procuring alcohol. It is a common misconception among regular drinkers that stopping alcohol causes more problems than continuing it. This may be partly true in those who have developed dependence as they may experience withdrawal symptoms including autonomic arousal, hallucinations, seizures and delirium tremens (DT). Since many people underplay or minimize their drinking behavior, they tend to develop withdrawal symptoms when hospitalized for other physical problems and not for alcoholism forming a substantial part of consultation-liaison psychiatry.

Our aim was to review the evidence base for the appropriate management of the alcohol withdrawal syndrome using pharmacotherapy. This review informs readers about medications to be used for treating alcohol withdrawal, their dosing strategies to be used and managing specific complications arising during alcohol withdrawal such delirum trements (DT) and alcohol withdrawal seizures. We specifically sought articles relating to medications commonly used in India and those that can be recommended based on strong evidence.

   Materials and methods Top

We searched Pubmed for articles published in English on pharmacological management of alcohol withdrawal in humans without any restriction on the publication date. We used the following medical subject heading (MeSH) terms: "Alcoholism", "alcohol withdrawal seizures" and "alcohol withdrawal delirium" and "drug therapy". Although "alcoholism" alone yielded 43921 articles, "alcohol withdrawal seizures" returned 103 results, "alcohol withdrawal delirium" 911 results; combining these terms with the MeSH term "drug therapy" yielded 1037, 10 and 102 articles respectively. Articles not relevant to the topic were excluded based on the titles and abstract available. Full text articles were obtained for the 24 articles relevant to clinical practice at this stage. Cross-references mentioned in the full text articles were checked for other relevant articles. Further search for books, monographs and articles relating to thiamine supplementation, neurobiology of alcohol withdrawal state were done by hand-search and other convenient means. A total of 100 full text-articles, books and monographs were identified. There were four meta-analyses, nine systematic reviews and 26 review articles. Other publications were randomized controlled trials, observational studies, case reports, manuals and monographs. By exclusion of articles relating to drugs with poor quality of evidence and inclusion of the latest version of Cochrane reviews, we were left with 35 published studies for our review focused on the clinical management and the rest are reports, books and monographs.

The literature was reviewed independently by the two authors. We tabulated the major recommendations from each source as regards the management of alcohol withdrawal with respect to severity of withdrawal, doses and regimen used in each study and the outcomes.

   The acute alcohol withdrawal syndrome Top

Alcohol is a central nervous system (CNS) depressant, influencing the inhibitory neurotransmitter gamma-aminobutyric acid (GABA). Ordinarily, the excitatory (glutamate) and inhibitory (GABA) neurotransmitters are in a state of homeostasis [Figure 1]a. Alcohol facilitates GABA action, causing decreased CNS excitability [Figure 1]b. In the long-term, it causes a decrease in the number of GABA receptors (down regulation). This results in the requirement of increasingly larger doses of ethanol to achieve the same euphoric effect, a phenomenon known as tolerance. Alcohol acts as an N-methyl-D-aspartate (NMDA) receptor antagonist, thereby reducing the CNS excitatory tone. Chronic use of alcohol leads to an increase in the number of NMDA receptors (up regulation) and production of more glutamate to maintain CNS homeostasis [Figure 1]c.
Figure 1: Neurochemistry of alcohol withdrawal

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With the sudden cessation of alcohol in the chronic user, the alcohol mediated CNS inhibition is reduced and the glutamate mediated CNS excitation is left unopposed, resulting in a net CNS excitation [Figure 1]d. This CNS excitation results in the clinical symptoms of alcohol withdrawal in the form of autonomic over activity such as tachycardia, tremors, sweating and neuropsychiatric complications such as delirium and seizures. [1]

Dopamine is another neurotransmitter involved in alcohol withdrawal states. During alcohol use and withdrawal the increase in CNS dopamine levels contribute to the clinical manifestations of autonomic hyper arousal and hallucinations.

Repeated episodes of withdrawal and neuroexcitation results in a lowered seizure threshold as a result of kindling [2] predisposing to withdrawal seizures.

Making a diagnosis of alcohol withdrawal syndrome

The alcohol withdrawal syndrome is diagnosed when the following two conditions are met

  1. A clear evidence of recent cessation or reduction of alcohol after repeated and usually prolonged and/or high-dose use.
  2. The patient shows symptoms of alcohol withdrawal [3] [Table 1] that are not accounted for by a medical disorder or by another mental or behavioral disorder.
Table 1: Common signs and symptoms of alcohol withdrawal syndrome[3]

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The diagnosis requires adequate history of the amount and frequency of alcohol intake, the temporal relation between cessation (or reduction) of alcohol intake and the onset of symptoms that may resemble a withdrawal state. When the onset of withdrawal like symptoms or delirium is after 2 weeks of complete cessation of alcohol, the diagnosis of alcohol withdrawal syndrome or DT becomes untenable, regardless of frequent or heavy use of alcohol. [Table 2] gives a clinical description of alcohol withdrawal syndrome by severity and syndromes. [4],[5],[6] [Figure 2] depicts the time course of symptom evolution.
Table 2: Clinical descriptions of alcohol withdrawal syndromes by severity[4-6]

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Figure 2: Graph depicting the time course of alcohol withdrawal symptoms (based on clinical information gathered in Table 2; adaptation from Haber et al.[7])

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Once a clinical diagnosis of alcohol withdrawal is made, we must review the patient's condition from time to time for the appearance of signs of medical or neurological illness which may not have been evident at admission but may develop subsequently.

Objective assessment of the severity of alcohol withdrawal - the Clinical Institutes Withdrawal Assessment-Alcohol Revised (CIWA-Ar) scale

In a patient diagnosed to have alcohol withdrawal syndrome, the CIWA-Ar [8] can be used to measure its severity. The scale is not a diagnostic tool as it has not been found to be useful in differentiating between DT and delirium due to medical illnesses. [9] The scale includes 10 common signs and symptoms of alcohol withdrawal with the notable exceptions of pulse rate and blood pressure, which must be a part of the assessment of alcohol withdrawal states. It has also been found useful in Indian setting. [10] It can be administered bedside in about 5 min. Scores of 0-9 indicate absent to minimal withdrawal, scores of 10-19 indicate mild to moderate withdrawal (marked autonomic arousal) and scores of 20 or more indicate severe withdrawal (impending DT). [8] It can be used to monitor the severity of withdrawal and in titrating pharmacotherapy. The score on CIWA-Ar remains high even after adequate dosing with benzodiazepines in cases with comorbid medical illness ("DT plus" condition). [11]

Differential diagnosis of DT

Delirium is a clinical syndrome of acute onset, characterized by altered sensorium with disorientation, perceptual abnormalities in the form of illusions and hallucinations and confused or disordered thinking, psychomotor agitation (or retardation) with disturbed (usually reversed) sleep-wake cycle. In most cases, it is secondary to a general medical condition causing disturbance in the basic functions of the brain. It could be due to infection, toxic, metabolic, traumatic or endocrine disturbances.

DT is a specific type of delirium occurring in patients who are in alcohol withdrawal states. Alcohol withdrawal delirium is typically associated with psychomotor agitation (hyperactive delirium) and in cases of hypoactive delirium comorbid hepatic encephalopathy, hyponatremia or other medical illnesses [Table 3] must be ruled out. This is especially important in a patient who has not had previous history of DT.
Table 3: Differential diagnosis for alcohol withdrawal delirium

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Alcohol withdrawal delirium has a high mortality of about 8%. Hence, it is important for clinicians to be able to predict it. The risk factors for DT were analyzed by Ferguson et al. [12] and further factors are tabulated in [Table 4].
Table 4: Predictors of severe alcohol withdrawal (withdrawal seizure or DT)[6,11,13]

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   Treatment of acute alcohol withdrawal syndrome Top


Detoxification is the process of weaning a person from a psychoactive substance in a safe and effective manner by gradually tapering the dependence producing substance or by substituting it with a cross-tolerant pharmacological agent and tapering it. [14] This process minimizes the withdrawal symptoms, prevents complications and hastens the process of abstinence from the substance in a more humane way.

General supportive care

Patients in alcohol withdrawal should preferably be treated in a quiet room with low lighting and minimal stimulation. All patients with seizures or DT should have immediate intravenous access for administration of drugs and fluids. Intramuscular lorazepam may be given to prevent further seizures. Adequate sedation should be provided to calm the patient as early as possible and physical restraints may be used as required in order to prevent injuries due to agitation. Fluid and electrolyte imbalances must be promptly corrected. Adequate nutrition must be ensured with care to prevent aspiration in over-sedated patients. Vitamin B supplementation helps to prevent Wernicke's encephalopathy (WE).

Medication of choice for detoxification

In 1969, a landmark study by Kaim et al., proved beyond doubt that chlordiazepoxide (a benzodiazepine) was far better in preventing seizures and DT in patients with alcohol withdrawal compared to chlorpromazine, hydroxyzine, thiamine or placebo. [15] Evidence is strongly in favor of the use of benzodiazepines to treat alcohol withdrawal states. [13],[16] They unequivocally reduce the risk of severe alcohol withdrawals like seizures or DT. [17] Among the benzodiazepines, chlordiazepoxide has a slight advantage over the other benzodiazepines or anticonvulsants. [18] Anticonvulsants have not been proven to be better than benzodiazepines. They may be considered in mild withdrawal states due to their advantages of lower sedation and lower chances of dependence or abuse potential. However, they may not have the expected advantage of preventing seizures or DT in alcohol withdrawal states [18] and their use is not recommended in severe withdrawal states.

The dose of benzodiazepine required per day is calculated according to the average daily alcohol intake. An estimate of the amount of alcohol consumption is given by the following formula: [19]

Alcohol (in g) = Volume of liquor (ml) × 0.008 × (%) ethanol content in the liquor (w/v).

The percentage of alcohol in various liquors [20] is: Beer (standard) - 3-4%, Beer (strong) - 8-11%, Wines - 5-13%, Fortified wines - 14-20%, Spirits/Indian Made Foreign Liquor like (rum/whiskey/gin/vodka/brandy) - 40%, arrack - 33%. One standard drink contains about 10 g of absolute alcohol or ethanol.

Treatment regimens used in alcohol withdrawal states

Fixed dose regimen

A fixed daily dose of benzodiazepines is administered in four divided doses. The daily dose is calculated by using the aforementioned formula. Approximately 5 mg of diazepam equivalents [Table 5] is prescribed for every standard drink consumed. However, it needs to be based upon the severity of withdrawals and time since last drink. For example, a person presenting after 5 days of abstinence, whose peak of withdrawal symptoms have passed, may need a lower dose of benzodiazepines than a patient who has come on the second day of his withdrawal syndrome. Chlordiazepoxide and diazepam remain the agents of choice. However, in the presence of co-morbidities shorter acting drugs such as oxazepam and lorazepam are used. A ceiling dose of 60 mg of diazepam or 125 mg of chlordiazepoxide is advised per day. [18] After 2-3 days of stabilization of the withdrawal syndrome, the benzodiazepine is gradually tapered off over a period of 7-10 days. This is best suited for out-patient setting. Patients need to be advised about the risks and to reduce the dose, in case of excessive drowsiness. In in-patient settings where intense monitoring is not possible due to lack of trained staff, a fixed dose regimen is preferred.
Table 5: Comparison of the four most commonly used benzodiazepines in treatment of alcohol

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Loading dose regimen

In studies by Sellers et al. [23] and Manikant et al. [24] the efficacy of an oral loading dose of 20 mg of diazepam given every 2 h was established to be of use in treating alcohol withdrawal. The withdrawal severity CIWA-Ar and the clinical condition needs to be monitored before each dose. This has been shown to reduce the risk of complications, reduces the total dose of benzodiazepines needed and the duration of withdrawal symptoms. Loading dose strategies use long acting benzodiazepines as they provide a self-tapering effect due to their pharmacokinetic properties. [25]

Symptom-triggered treatment (STT)

The STT was proposed by Saitz et al. in 1994 [26] where in chlordiazepoxide was given when CIWA-Ar ratings were eight or more. The STT requires close monitoring as in-patient. Patients who are non-verbal (e.g. stupor due to head injury) may not be suited for this regimen as they may not be able to inform the nursing personnel if they were to experience any withdrawal symptoms. This protocol is not safe in patients with a past history of withdrawal seizures because they can occur even in a patient without overt autonomic arousal or symptoms of alcohol withdrawal. [6] STT decreases the duration of detoxification and dose of benzodiazepine required compared with fixed dose regimen and may be useful in patients who have never had complicated withdrawals.

Symptom-monitored loading dose (SML)

We recommend that clinicians take into account the past history of seizures or DT as well as the current clinical status while deciding upon medications for a patient. In the presence of an acute medical illness at present or a past history of severe withdrawals, a single loading dose of 20 mg diazepam should preferably be given immediately and the patient be monitored for further signs of alcohol withdrawal. [13] Further doses of diazepam (20 mg) should be given orally every 2 h until CIWA-Ar scores are less than ten. Up to three doses are required in most patients, [23] which helps in reliably preventing the occurrence of withdrawal seizures. [27] This strategy, which could aptly be called SML combines the principles and advantages of a STT, whereas at the same time takes into account a past history of severe withdrawals and gives a loading dose regardless of the appearance of symptoms.

Rapid loading with close monitoring

This method is recommended only in patients with DT. Frequent boluses of diazepam are given intravenously until the patient is calm and sedated. It is described under management of DT below.

   Management of minor alcohol withdrawal syndrome Top

Minor alcohol withdrawal syndrome may not need pharmacotherapy in all cases. The patient needs supportive care in a calm and quiet environment and observation for a period of up to 36 h, after which he is unlikely to develop withdrawal symptoms. [13]

In the presence of risk factors like an acute medical illness or a past history of severe withdrawals, a single dose of 20 mg of diazepam should be given immediately as a loading dose and the patient be monitored for further signs of alcohol withdrawal, [13] further doses being guided by the appearance of withdrawal symptoms.

Out-patient treatment can be started for patients without these risk factors and is based on the clinical withdrawal signs. Pharmacotherapy is started when the systolic blood pressure exceeds 150 mmHg, diastolic blood pressure exceeds 90 mmHg, body temperature greater than 37.7°C, pulse exceeds 100/min or other withdrawal symptoms such as agitation, insomnia, tremulousness are present without other medical or neurological illness. [3]

Management of moderate to severe alcohol withdrawal syndrome

Without seizures or DT

In these cases, we recommend that patients should be started immediately on a SML dose regimen, while monitoring the withdrawal severity (CIWA-Ar ratings) and clinical signs of tachycardia and hypertension. A fixed dose regimen can be safely used in such patients in case adequate trained personnel are not available or if outpatient treatment is advised.

Severe alcohol withdrawal with alcohol withdrawal seizures

Regardless of the CIWA-Ar score, the occurrence of seizures during the alcohol withdrawal period is indicative of severe alcohol withdrawal. [19] Seizure prophylaxis with lorazepam 2 mg intravenously must be given to all patients with seizures in the current withdrawal period at presentation and also in those with past history of withdrawal seizure. [28] Lorazepam is more effective than diazepam in preventing seizure recurrence . Unlike diazepam brain tissue levels of lorazepam don't fall rapidly owing to its poor lipid solubility and poor redistribution. Although, a single lorazepam dose given is likely to prevent further seizure recurrences, it may still be required to give SML dose of diazepam of at least 20 [13] -60 mg [27] or at times even 80 mg diazepam [7] in such patients. This strategy helps to prevent the development of DT. All patients who presenting with seizures after cessation of alcohol, regardless of previous episodes, must ideally be monitored as inpatients for at least 36-48 h to watch for further seizures or DT. [19]

In patients who present with seizures, a thorough neurological and general medical evaluation is a must to detect alternative cause of seizures. Patients with new onset seizures should preferably undergo brain imaging. Neurological work-up and consultation is essential in patients with more than six seizures during alcohol withdrawal, seizures persisting for more than 6 h or despite adequate dose of benzodiazepines treatment, [6] presence of focal seizures/change in seizure type, history of traumatic brain injury, family history of seizures in relatives who do not use alcohol, status epilepticus, focal neurological deficits, presence of meningeal irritation or patients with worsening sensorium despite at least 8 h of loading dose diazepam (60 to 80 mg).

Severe alcohol withdrawal with DT

Treatment of alcohol withdrawal delirium DT is defined by the goal of achieving a calm, but awake state [13] or light somnolence defined as a sleep from which the patient is easily aroused. [29] This goal is best achieved by the use of intravenous diazepam administered at frequent intervals while closely monitoring the patient during the procedure. Intravenous or intramuscular lorazepam may be used in patients with hepatic disease, pulmonary disease or in the elderly where there is risk of over-sedation and respiratory depression with diazepam.

An initial dose of 10 mg diazepam is given intravenously. Further doses of 10 mg can be repeated every 5-20 min interval. [13],[14] Others recommend increasing the dose to 20 mg per bolus for the subsequent boluses if the first two boluses do not calm the patient down. [29] Once the goal of light somnolence is achieved, the patient is shifted to a SML dose regimen. Though experts advice the use of rapid loading doses of diazepam for management of DT, no trials of rapid loading with diazepam has been conducted in patients with DT. There have been trials comparing loading doses of barbiturates (versus diazepam loading), where the drug is given at 2 h intervals [30] and a trial of diazepam (loading dose versus fixed doses) [31] for the management of DT. In practice, loading dose strategy (20 mg diazepam every 2 h) can be safely administered in DT. Vital signs should be used to guide treatment in "DT-plus" condition (DT in presence of medical comorbidities) as these patients have been noted to have failure of loading-dose regimen with falsely high CIWA-Ar scores. [11]

Refractory DT

A review by Hack et al. [32] suggests that a high requirement of intravenous diazepam (more than 50 mg in the 1 st h, or 200 mg or more within the first 3 h) with poor control of withdrawal symptoms is a marker of non-response of DT to benzodiazepines.

Such patients can be diagnosed to have refractory DT after a review of the clinical condition to rule out medical or neurological causes of delirium. They can be given oral (or intravenous) loading with phenobarbital 100-200 mg/h, which has been shown to as effective as or better than diazepam front-loading for patients in DT in a more recent retrospective chart review. [33] The use of barbiturates is justified by the fact that they are also GABA-enhancing drugs that have a different receptor profile than benzodiazepines and have been tested in a double-blind protocol against diazepam for DT. [30] However, it carries the risk of over-sedation, especially in the elderly or in presence of hepatic disease and a risk of respiratory depression in patients with pulmonary disease. There is no antidote to barbiturate toxicity. For these reasons, barbiturates have fallen out of favor.

An alternative adjunctive medication useful in patients with refractory DT is haloperidol given in doses of 0.5-5 mg by intramuscular route every 30-60 min [29] or 2-20 mg/h [34] while continuing to give diazepam 10-20 mg every 1-2 h. Newer antipsychotics like risperidone (1-5 mg/day) or olanzapine (5-10 mg/day) may have a better safety profile than haloperidol (2, 5-10 mg/day) [7] and are preferred as adjuncts to benzodiazepine treatment.

In patients who do not respond to benzodiazepines and haloperidol, propofol infusion (0.3-1.25 mg/kg/h) in an intensive care setting has been used in a few cases. [34] The risks of propofol infusion include bradycardia, hypotension, metabolic acidosis, acute pancreatitis and lipid abnormalities. [29] Moreover, propofol may not treat the underlying withdrawal syndrome because patients are often noted to exhibit withdrawal symptoms soon after stopping propofol infusion.

Alcoholic hallucinosis

This is a unique form of withdrawal related psychosis which can begin even while the person is continuing to use alcohol or begins after he stops alcohol. Hallucinations occurring in clear sensorium are the hallmark of this disorder. A cluster analysis of alcohol withdrawal symptoms by Driessen et al. [35] showed that hallucinosis is a severe form of alcohol withdrawal and is often associated with DT. However, it is one of the conditions that may cause apparent failure of the loading dose regimen [11] and we recommend a fixed dose strategy to cover the period of alcoholic hallucinosis. The patient may be given low doses of antipsychotics like chlorpromazine 100-200 mg/day or risperidone 1-3 mg/day to control severe agitation due to hallucinations. The hallucinations last about a week in most cases, but may last up to 1 month in some patients after which the antipsychotic can be stopped.

Importance of adjunctive supplements (Vitamin B and magnesium)

Wernicke's Encephalopathy (WE) results from cell damage due to chronic thiamine deficiency. It rarely presents with the classic triad of confusion, ataxia and ophthalmoplegia and therefore goes undiagnosed in nearly 90% of the cases. [36] It is difficult to diagnose in the presence of alcohol withdrawal symptoms. The presence of small mammillary bodies and thalami on magnetic resonance imaging brain may be helpful in diagnosis, but confirmation is by postmortem examination. WE has an associated mortality of 20%, with 75% developing a permanent severe amnestic syndrome (Korsokoff's encephalopathy). [37] This can be prevented by administering parenteral thiamine which achieves adequate blood thiamine level much earlier than the oral route. [38] Allergic reactions are rare. All patients in alcohol withdrawal should receive at least 250 mg thiamine by the parenteral route once a day for the first 3-5 days, [39] whereas for those with suspected WE, thiamine 500 mg/day for 3-5 days is advised. If there is clinical improvement the supplementation is continued for total of 2 weeks. [39] Concurrent administration of parenteral thiamine with glucose is advised traditionally. However, this is only to ensure that thiamine supplementation is not forgotten. Administration of glucose containing fluids before thiamine may not precipitate WE. [40] Due to chronic malnutrition and gastric malabsorption that follows chronic alcohol abuse, many clinicians advise multivitamin supplements (B1 + B2 + B6 + nicotinamide + Vitamin C) in parenteral form for the initial 3-5 days. [36]

Chronic alcohol use is associated with abnormal magnesium metabolism. Those with neuropathy and presenting with severe withdrawal symptoms are more likely to show low serum magnesium level. [41] Oral or parenteral magnesium supplementation may benefit such patients by reducing the severity and duration of alcohol withdrawal. Routine use is not advised [29] [Table 6].
Table 6: Summary of recommendations

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   Conclusions Top

Benzodiazepines are the mainstay of management of alcohol withdrawal states. STT regimen reduces dose and duration of detoxification compared with traditional fixed dose regimen in mild to moderate alcohol withdrawal. However, it is feasible only in relatively stable patients and requires periodic monitoring of the withdrawal severity by trained personnel. For management of severe withdrawals, inpatient care and SML dose is advised. Though rapid loading is advised in DT, the few trials and retrospective chart reviews in DT have used a loading dose regimen. Refractory DT can be managed with phenobarbital or adjuvant antipsychotics. Thiamine supplementation should be routinely prescribed to prevent WE.

   References Top

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  [Figure 1], [Figure 2]

  [Table 1], [Table 2], [Table 3], [Table 4], [Table 5], [Table 6]

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