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  • Title: A clinical trial of a 50 mg formulation of clomipramine (Anafranil) with steady-state plasma level measurements.
    Author: Gringras M, Luscombe DK, Jones RB, Beaumont G, Seldrup J, John V.
    Journal: J Int Med Res; 1977; 5(1 Suppl):119-24. PubMed ID: 863081.
    Abstract:
    Twenty depressed patients seen in general practice were admitted to an open, uncontrolled pilot trial of a new 50 mg formulation of clomipramine. Treatment was administered for four weeks and clinical progress assessed by the General Health Questionnaire, a new depression rating scale and a new design of a visual analogue scale. Two patients dropped out of the study, one because of side-effects and a second because it was necessary to change the dosage. Of the 18 patients remaining 17 showed significant improvement during the four weeks treatment as assessed by the three clinical measures. Plasma levels of clomipramine and desmethylclomipramine were assayed. Steady-state appeared to be achieved between one and two weeks. Between two and four weeks levels of clomipramine varied between 14 and 136 microng/ml with a mean level of 54-6 microng/ml and of desmethylclomipramine, between 3-5 and 344-3 microng/ml with a mean level of 76-7 microng/ml The 50 mg formulation of clomipramine appeared to produced therapeutic levels in 17 of the 18 patients treated. Because so many patients recovered in spite of individually variable plasma levels no correlations between clinical effect and plasma levels were demonstrable. Side-effects were not generally troublesome and were low in incidence. Correlations between plasma level and side-effects were inexplicably negative but rarely significantly so.
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