Background: Omeprazole has long-term use adverse effects even though are commonly used.The study aimed at evaluation of the possible renal protective effect of ginseng against the long-term omeprazole-induced adverse effects. Methods: Forty albino rats were divided into: C group (control), G group (ginseng), OM group (omeprazole) and OM-G group (omeprazole-ginseng). Renal functions and histological renal tissues were investigated. Results: The OM group had significantly high levels of urea, creatinine and 24-hours protein urea. A significant glomerular, tubular and interstitial injury was observed; congestion, inflammatory cell infiltration, tubular damage, increased collagen deposition and significant increases in COX-2 and caspase-3 immune expression. While adding ginseng with omeprazole resulted in marked improvement in these changes. Conclusion: Long-term use of omeprazole induced renal functional and morphological changes through induction of inflammatory reaction, fibrosis, cellular degeneration and apoptosis. By adding ginseng, these effects were ameliorated through its anti-fibrotic, anti-inflammatory, and anti-apoptotic effects.