Take this medication by mouth, usually once daily or as directed by your doctor. It combines the antihypertensive activity of two agents: tenoretic online postiennakko beta1-selective cardioselective hydrophilic blocking agent atenolol, TENORMIN and monosulfonamyl diuretic chlorthalidone. Lab tests, such as electrolyte and blood pressure monitoring, may be performed while you use Tenoretic. Beta-adrenergic blockade may mask certain clinical signs eg, tachycardia of hyperthyroidism. Nervous system side effectsRare cases of acute visual loss have been associated with atenolol and atenolol-chlorthalidone. Rare: Postural hypotension which may be associated with syncope, intermittent claudication may be increased if already present, in susceptible patients Raynaud phenomenon. The tenoretic buy and excessive sweating soles of the feet depends on tenoretic buy.