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. 2016 Jun 22;4(2):E346–E351. doi: 10.9778/cmajo.20150131

Table 3: Proportion of enrollees who filled 1 or more potentially inappropriate prescription for the 20 most frequently used drugs on the Beers list and estimated average per-capita cost, by sex.

Drug % of enrollees who filled  1 potentially inappropriate prescription Estimated average per-capita cost of potentially inappropriate prescriptions, $
Women Men Overall Women Men Overall
Lorazepam 11.0 6.1 8.8 6.95 3.46 5.40
Nitrofurantoin 8.3 1.9 5.5 3.23 0.75 2.13
Amitriptyline 3.9 2.0 3.1 4.12 1.85 3.11
Quetiapine 2.8 2.2 2.5 8.24 5.95 7.22
Clonazepam 3.0 1.9 2.5 3.02 1.82 2.49
Zopiclone 2.9 1.9 2.4 5.25 3.50 4.47
Conjugated estrogens 4.2 0.0 2.4 3.71 - 2.06
Glibenclamide 1.7 2.7 2.2 1.80 2.52 2.12
Indomethacin 0.7 2.6 1.6 0.30 1.09 0.65
Terazosin 0.4 2.9 1.5 0.82 5.04 2.70
Oxazepam 1.8 1.1 1.5 1.61 0.84 1.27
Risperidone 1.6 1.1 1.4 5.48 3.64 4.66
Estradiol 2.6 0.0 1.4 5.95 - 3.31
Temazepam 1.6 1.2 1.4 1.41 0.96 1.21
Metoclopramide 1.3 1.0 1.2 0.65 0.45 0.56
Amiodarone 0.7 1.1 0.9 1.41 2.26 1.79
Meloxicam 1.1 0.6 0.9 1.65 0.93 1.33
Cyclobenzaprine 1.0 0.9 0.9 0.54 0.40 0.48
Diclofenac, combinations 0.8 0.8 0.8 3.98 3.59 3.80
Alprazolam 1.1 0.6 0.8 0.96 0.49 0.75