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  • Title: Comparison of the effectiveness of slow-release propranolol (Inderal LA) 80, 160 and 320 mg orally daily in the treatment of angina pectoris.
    Author: Odemuyiwa O, Peart I, Alberts C, Hall RJ.
    Journal: Br J Clin Pract; 1990 Jan; 44(1):9-12. PubMed ID: 2317442.
    Abstract:
    Doses of 80, 160 and 320 mg of Inderal LA (slow-release propranolol) were compared in 12 patients with stable angina pectoris. There was an unpredictable and variable individual response to treatment and hence no differences were detected between the effects of the three doses on mean treadmill exercise duration, time to angina, frequency of angina or glyceryl/trinitrate consumption. There was a marked deterioration in two patients whilst on 320 mg Inderal LA. In these patients, the time to angina fell by 2 minutes 50 seconds and 4 minutes 20 seconds on 320 mg daily and 160 mg daily respectively. Given the inter-patient variability in response to Inderal LA, the dose for each patient should be individually titrated according to response. Two patients reported here suggest that some subjects may benefit from lower doses, although further work is required to clarify this point. Possible explanations for this finding are discussed.
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