This was done to counter the effects of high blood sugar, but he had stopped taking it after a couple of episodes of acute low blood sugar (hypoglycaemia) while at the gym.

Blockers can mask the course of insulin therapy because of drug overdose-induced hypoglycemia symptoms, it is necessary to take caution.

Conclusions: Although fasting hypoglycemia is characteristic of patients with insulinoma, postprandial symptoms have been reported with increasing, albeit low frequency.