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Volpp M, Holzgrabe U (januar 2019). »Determination of plasma protein binding for sympathomimetic drugs by means of ultrafiltration«. Eur J Pharm Sci. 127: 175–184. doi:10.1016/j.ejps.2018.10.027. PMID30391401.
Gad MZ, Azab SS, Khattab AR, Farag MA (oktober 2021). »Over a century since ephedrine discovery: an updated revisit to its pharmacological aspects, functionality and toxicity in comparison to its herbal extracts«. Food Funct. 12 (20): 9563–9582. doi:10.1039/d1fo02093e. PMID34533553.