The Drug Detail page (pharmacy/pages/drug_detail.php?id=X) shows the complete history and current stock picture for a single drug — every batch, adjustment, and dispensing event tied to it.
Step-by-step
From Drug Master, click into any drug.
Review current stock batches, their quantities remaining and expiry dates.
Review the drug's full transaction history (additions, dispenses, adjustments).
Common issues & fixes
the drug ID in the URL doesn't exist or was deleted; go back to Drug Master and select it from the list instead of using an old link.
cross-check against Stock Batches and any recent Stock Adjustments for that drug.