The only drug whose over dosage is not characterized by both hypotension and bradycardia is:
Theophylline results in reflex tachycardia due to its vasodilatory action. Propanolol, verapamil and clonidine cause hypotension as well as bradycardia.
Propanolol
Verapamil
Clonidine
Theophylline
Hypeension, Arrhythmias, Dyslipidemia