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Saeed, SA; Gilani, AH; Majoo, RU; Shah, BH (1997). „Anti-thrombotic and anti-inflammatory activities of protopine.”. Pharmacological research : the official journal of the Italian Pharmacological Society36 (1): 1-7. DOI:10.1006/phrs.1997.0195. PMID9368908.
Gaulton A, Bellis LJ, Bento AP, Chambers J, Davies M, Hersey A, Light Y, McGlinchey S, Michalovich D, Al-Lazikani B, Overington JP. (2012). „ChEMBL: a large-scale bioactivity database for drug discovery”. Nucleic Acids Res40 (Database issue): D1100-7. DOI:10.1093/nar/gkr777. PMID21948594.edit
Jiang, B; Cao, K; Wang, R (2004). „Inhibitory effect of protopine on K(ATP) channel subunits expressed in HEK-293 cells.”. European Journal of Pharmacology506 (2): 93-100. DOI:10.1016/j.ejphar.2004.11.004. PMID15588728.
Vrba, J.; Vrublova, E.; Modriansky, M.; Ulrichova, J. (2011). „Protopine and allocryptopine increase mRNA levels of cytochromes P450 1A in human hepatocytes and HepG2 cells independently of AhR”. Toxicology Letters203 (2): 135-141. DOI:10.1016/j.toxlet.2011.03.015. PMID21419197.
Saeed, SA; Gilani, AH; Majoo, RU; Shah, BH (1997). „Anti-thrombotic and anti-inflammatory activities of protopine.”. Pharmacological research : the official journal of the Italian Pharmacological Society36 (1): 1-7. DOI:10.1006/phrs.1997.0195. PMID9368908.