Combining common nerve pain and blood pressure drugs doubles dementia risk—but only if you start them in a specific order.
April 1, 2026
Original Paper
Sequence-Dependent Amplification of Gabapentinoid-Associated Dementia Risk by Dihydropyridine Calcium Channel Blockers: Asymmetric Pharmacodynamic Vulnerability Consistent with Homeostatic Synaptic Plasticity
medRxiv · 10.64898/2026.03.30.26349801
The Takeaway
Researchers found that taking gabapentin for nerve pain while already on certain blood pressure medications increases dementia risk by 2.2 times. Crucially, the risk disappears if you start the nerve pain medication first, suggesting that the sequence of prescriptions can literally change how these drugs affect brain plasticity.
From the abstract
Background: Concomitant gabapentinoid and dihydropyridine calcium channel blocker (DHP-CCB) use amplifies dementia risk, an interaction proposed to involve dual neuronal calcium channel blockade. Whether this risk depends on the sequence of drug initiation - and is therefore preventable by prescribing order - remains unknown. Methods: Using the Rutgers Clinical Research Data Warehouse (2015-2024), we conducted three complementary analyses. The primary analysis (Population 4) compared gabapentin