# Physical profiling and IR spectroscopy: simple and effective methods to discriminate between genuine and counterfeit samples of Viagra® and Cialis®

> Research article (Drug Testing and Analysis, 2015) · cited 27× · AI/ML

**Wikidata**: [openalex:W1508648488](https://www.wikidata.org/wiki/openalex:W1508648488)  
**Source**: https://4ort.xyz/entity/physical-profiling-and-ir-spectroscopy-simple-and-effective-methods-to-discriminate-between-genuine-and-counterfeit-samp