Hello, I have gone through your query and understand your concern. Your doctor prescribed the right antihypertensive for you. You need not to concern too much about this. As for as dose of perindopril is concerned, he may increase or decrease the dose of perindopril based on your blood pressure control and nothing to worry about. There is no interaction between Perindopril and imatinib. Other than perindopril most of the antihypertensives like calcium channel blockers, metaprolol etc have significant interaction with Imatinib. Thus nothing to be concerned too much about this. Just have regular check on your blood pressure. Have a regular visit and consult your treating oncologist. Hope this helps. Please write back for further queries. Wishing you good health.