There is an urgent need to identify new therapeutic targets. In addition, off-target activity is a major cause of drug development failure and withdrawal. SCAR_Drug module sheds new light on the drug discovery process, potentially revealing hidden mechanisms of action and predicting the effects of drugs on specific cell types.Python package 'drug2cell' was utilized for drug analysis (Kanemaru, K. et al. Spatially resolved multiomics of human cardiac niches. 2023.01.30.526202 Preprint at https://doi.org/10.1101/2023.01.30.526202 (2023)).