• Psychiatry research · May 2005

    Randomized Controlled Trial Clinical Trial

    Effect of intravenous magnesium sulphate in reducing irritability and restlessness in pure and polysubstance opiate detoxification.

    • Angela Naderi-Heiden, Richard Frey, Otto Presslich, Patrick Frottier, Ulrike Willinger, Thomas Blasbichler, Ronald Smetana, Daniela Schmid, and Siegfried Kasper.
    • Department of General Psychiatry, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria. angela.naderi-heiden@meduniwien.ac.at
    • Psychiatry Res. 2005 May 15; 135 (1): 53-63.

    AbstractThe aim of this double-blind, placebo-controlled study was to evaluate the efficacy of intravenous magnesium sulphate (MgSO(4)) on the need for chlormethiazole in pure or polysubstance opiate detoxification. Forty-one inpatients suffering from pure and polysubstance opiate dependence were treated with morphine sulphate pentahydrate in a gradual detoxification program. Morphine reduction took about 11 days. Additionally, 5% MgSO(4) was administered intravenously to the intervention group (Mg group, n=22) over 24 h by perfusor (150-200 mg MgSO(4)/h; plasma level of 2.36+/-0.29 mmol/l), whereas NaCl 0.9% was intravenously administered in the placebo group (n=19). In case of withdrawal symptoms (irritability, restlessness, and insomnia), patients received chlormethiazole p.o. Our hypothesis that the need for chlormethiazole would be decreased by adjunctive administration of Mg was not confirmed in our study population (2180 mg/day in the Mg group vs. 2360 mg/day in the placebo group). There was neither a difference in the quantity of chlormethiazole required nor a difference in the severity of withdrawal symptoms measured with the Wang scale between the two comparison groups. We observed that calcium plasma levels decreased and phosphate plasma levels increased significantly during intravenous therapy with Mg. Despite promising pilot studies, the administration of Mg did not enable a dose reduction of tranquilizing medication (chlormethiazole) in pure and polysubstance opiate detoxification.

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