Mainly from following this protocol, based in the latest guidance from the large cardiology associations, where Beta Blockers are reserved for patients with atrial fibrillation:
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He wanted Telmasartin, an ARB, and Amlodipine is a Calcium Channel blocker, a combination therapy advised here, at the lowest doses.
In addition, they advise a single pill combo if possible, and these two are available in one pill.
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After 2-4 weeks, if BP is still uncontrolled, they advise up to 2 titration steps up, but avoiding the maximum dose is preferable (max doses usually have sides). Since this combo is available as 4 levels he can go up two more levels if necessary, then if still not controlled he can add a third low dose med if necessary. In fact a single pill three med combo is available with Telm, Amlodipine, and a diuretic.