In a cross-sectional analysis of 2,012 adults age 85+, the GERDA study found 17 medications used differently in depressed vs. non-depressed patients, with proton pump inhibitors and H2 receptor antagonists still linked to depressive disorders after adjustment — while lipid-lowering agents showed an inverse association. Bottom line: frontline clinicians doing the day-to-day medication reconciliation — especially NPs and PAs — are often best positioned to catch these depression clues early in the oldest old.

Why It Matters To Your Practice

• Adults 85+ often have polypharmacy, overlapping symptoms, and atypical presentations, making depression easy to miss during routine care.

• This study highlights that some commonly prescribed medications may track with depressive disorders in very old adults, giving you another practical signal to review.

• Your close, longitudinal patient contact puts you in a prime position — not behind anyone else on the team — to connect mood changes with medication lists.

Clinical Benefits

• Medication review can become a sharper depression screen: ask whether low mood, withdrawal, sleep change, or loss of interest emerged after a drug was started or changed.

• Pay added attention when patients 85+ are taking proton pump inhibitors or H2 receptor antagonists, while remembering this study shows association, not causation.

• Use home visits, follow-ups, refill checks, and family conversations to detect subtle mood decline that may not surface in a brief physician visit.

Managing Risks

• Do not stop indicated medications based on this study alone; instead, reassess indication, duration, alternatives, and overall medication burden.

• Depression in the oldest old is multifactorial, so also consider pain, isolation, cognitive impairment, medical comorbidity, bereavement, and functional decline.

• Escalate promptly for formal mental health or geriatric evaluation when symptoms are persistent, severe, or accompanied by suicidality, weight loss, or rapid decline.

The Bottom Line

• The GERDA study suggests medication lists may hold actionable clues to depressive disorders in adults 85+.

• NPs and PAs are not backup observers here — you are often the clinician most likely to notice the pattern first and translate it into safer prescribing and better mood care.

• A careful med review plus targeted mood assessment can meaningfully improve care for very old adults.

Reference: Examining the associations between commonly prescribed medications and depressive disorders in very old adults- an exploratory study.