hello, i can understand your concern. the drugs sotalol and amlodipine both lower the blood pressure which can sometimes reach much lower than the desired effect, and along with this patients can also feel dizziness,head ache,light headedness at the onset of the treatment. the usage of both the drugs needs close monitoring by the doctor. i would suggest you to report to your doctor if you have any of the symptoms mentioned earlier. weekly visit to your physician is advised initially to adjust the dose as per the response. hope i have answered your concerns. feel free to ask further queries. thanks for choosing HCM