Carvedilol is a nonselective beta blocker and alpha-1 blocker. Ramipril was found to have similar results as telmisartan, an angiotensin II receptor blocker. Saxitoxin is a neurotoxin that acts as a selective sodium channel blocker. First selective alpha-1 blocker that was approved to treat hypertension was prazosin. Magnesium works as a physiologic calcium blocker. Timolol is a non-selective beta blocker. Note that amiloride is not an angiotensin II receptor blocker (like losartan, for example). This is termed beta blocker induced hypoglycemia unawareness. Some antivirus software can act as an ad blocker. Howard left the Magic as their all-time leading scorer, shot blocker, and rebounder. Smith was also a reliable receiver and an excellent blocker in pass protection. Other antidotes for beta blocker poisoning are salbutamol and isoprenaline. It is a calcium channel blocker of the dihydropyridine type. It is, therefore, useful in patients with beta blocker cardiotoxicity. He may be used as an extra blocker or a receiver.