Nefopam vs protriptyline
Mechanistic comparison of Nefopam Non-narcotic analgesic chemically similar to ORPHENADRINE. Its mechanism of action is unclear. It is used for and protriptyline based on molecular target overlap from BindingDB and ChEMBL binding affinity data.
11
Shared Targets
39%
Jaccard Similarity
36%
IDF-Weighted Similarity
Jaccard measures raw target overlap. IDF-weighted downweights promiscuous hub targets (e.g. CYP enzymes) that bind many compounds non-specifically.
Evidence Comparison
Target Overlap
Nefopam and protriptyline share 11 molecular targets based on binding affinity data from BindingDB (Kd/IC50 ≤ 10 µM) and ChEMBL. A Jaccard index of 0.393 means 39% of the combined target set is bound by both compounds. The IDF-weighted score of 0.361 accounts for non-specific binding to metabolic enzymes.
Note: High target overlap does not imply identical mechanism or therapeutic equivalence. Binding affinity, tissue distribution, bioavailability, and downstream signaling differ significantly between compounds even when they bind the same protein.