Medication-Related Fall Risk in Older Adults

Highest Priority Medications to Avoid

• The American Geriatrics Society recommends that older adults with a history of falls or orthostatic hypotension should avoid or use with extreme caution: benzodiazepines, antipsychotics, antidepressants (especially SNRIs), opioids, gabapentinoids, sedative-hypnotics, anticholinergics, and certain cardiovascular medications (alpha-blockers, vasodilators, diuretics) 1, 2, 3
• Benzodiazepines are strongly associated with falls, fractures, cognitive impairment, and increased mortality risk in older adults, with a pooled OR of 1.42 (95% CI 1.22-1.65) 1, 3
• Sedative-hypnotics, including zolpidem, significantly increase fall risk, with an adjusted OR of 2.59 (95% CI 1.16-5.81) in hospitalized elderly 1, 3
• Antipsychotics increase fall risk through orthostatic hypotension, sedation, and motor impairment, with a pooled OR of 1.54 (95% CI 1.28-1.85) 1, 3
• SNRIs must be avoided in patients with a history of falls or fractures, according to the 2019 Beers update with high-quality evidence 2, 3
• Opioids should be avoided in fall-risk patients due to sedation, dizziness, and cognitive impairment, with evidence level upgraded to "moderate" in the 2019 Beers update 2, 3
• Gabapentin and pregabalin increase fall risk, particularly in elderly, renally impaired, and those on polypharmacy, requiring dose adjustment and patient education about alertness impairment 3, 4
• Hydroxyzine causes sedation, psychomotor impairment, and anticholinergic effects, and should be replaced with second-generation antihistamines whenever possible 5

Critical Drug-Drug Interactions That Amplify Fall Risk

• The American Geriatrics Society recommends never combining opioids with benzodiazepines due to severe respiratory depression and death risk 1, 3
• Opioids should not be used with gabapentinoids except when transitioning from opioids to gabapentinoids as replacement therapy 1, 3
• Concurrent use of 3 or more CNS agents dramatically increases fall risk 1, 3

Cardiovascular Medications Requiring Caution

• Diuretics cause hypovolemia, orthostatic hypotension, dehydration, and electrolyte disturbances leading to falls, particularly in patients ≥75 years with ankle edema or poor mobility 6
• Alpha-blockers and vasodilators cause orthostatic hypotension and syncope 6
• Nitrates increase orthostatic hypotension risk, requiring BP monitoring and use of smallest effective dose 6

Practical Implementation Algorithm

• Review all medications at every care transition using Beers Criteria, and count total CNS medications (target <3 concurrent agents) 1, 3
• Assess orthostatic vital signs in patients on cardiovascular medications, and check renal function for dose adjustments of gabapentinoids, ciprofloxacin, TMP-SMX 3, 6
• Prioritized deprescribing should start with removing benzodiazepines, opioid-benzodiazepine combinations, and opioid-gabapentinoid combinations 3
• When medications cannot be stopped, start with the lowest effective dose, provide explicit patient education about fall risk, and consider home safety assessment for high-risk patients 4, 5