Scheduled paracetamol did not reduce pain in care-home residents with dementia

Design

Systematic review and meta-analysis of 4 randomised trials

Population

482 long-term care residents with moderate to severe dementia and mild to moderate pain

Primary outcome

Pain on observational dementia pain scales

Effect

SMD −0.14 (95% CI −0.39 to 0.11); I² 6%; moderate certainty

A systematic review and meta-analysis pooled four randomised trials of regularly scheduled paracetamol in long-term care, involving 482 residents with moderate to severe dementia and mild to moderate pain. Doses were 2.5 to 3 g a day in three or four doses for 4 to 13 weeks; comparators were placebo in three trials and usual care in one. Published in JAMDA on 7 October 2026.

Scheduled paracetamol did not significantly reduce pain on observational dementia pain scales (SMD −0.14, 95% CI −0.39 to 0.11; I² = 6%), rated moderate-certainty evidence. The one trial that measured quality of life found no difference. Adverse events were inconsistently reported.

The trials were few and short, and they enrolled residents with mild to moderate pain, so the result does not apply to severe pain or to acute painful conditions. Paracetamol remains a reasonable first choice when a specific painful condition is being treated. What this challenges is the standing order continued indefinitely without review. A time-limited trial with a clear measure of benefit, followed by stopping if nothing changes, is better supported.

• Review standing paracetamol prescriptions in residents with dementia and stop those without clear benefit
• Use a time-limited trial with an observational pain scale before and after
• Keep paracetamol available for specific painful conditions and acute pain
• Look for and treat the cause of pain rather than relying on a fixed schedule
• Consider non-drug measures such as positioning, activity and physiotherapy

Why it matters

It challenges a default prescription found on many care-home drug charts.

Don't overread it

Four short trials in mild to moderate pain; it does not show paracetamol is ineffective for acute or severe pain.

The statistics, in plain English

A standardised mean difference of −0.14 is a very small effect, and the interval from −0.39 to 0.11 crosses zero, so no benefit was shown. An I² of 6% means the trials agreed with each other.

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