hello I have high blood pressure,it s under control,but I also have a mirtal valve prolasp,and sometimes I have palpatations not often,and minor chest pain,so my cardiologist prescribe me diltiazem 120 mg and losartan 50 mg,is that too much?will it lower and keep my pressure where it should be,right now im taking losartan 50 mg/hctz 12.5,it makes me have cramps in my feet from time to time,which is better for me,i also had a nucular stress text everything is great,no plaque buildup.