Hyperlipidemia, a condition characterized by elevated lipid levels, presents significant cardiovascular risks. Syringaldehyde (SA), a phenolic aldehyde derived from plants, exhibits antioxidant, antihyperglycemic, and anti-inflammatory properties. However, its potential toxicity and effects on hyperlipidemia have not been studied. In this study, we evaluated the safety profile and antihyperlipidemic effects of SA. To assess acute toxicity, Sprague-Dawley rats were divided into two groups (