Pharmacokinetic Herb-Drug Interaction between Hibiscus sabdariffa Calyces Aqueous Extract and Captopril in Rats

Table 2

Operational parameters for mass spectrometry detection of captopril and propranolol.

Parameter	Value
Cone (V)	Captopril, 32; propranolol, 22
Collision energy (V)	Captopril, 36; propranolol, 18
Mode of analysis	Positive
Ion transition for captopril (Da)	m/z 414.01/216.082
Ion transition for propranolol (IS) (Da)	m/z 260.16/183.006