I take lisinopril as well. 20mg once a day initially for roughly 6 months, now 10mg lisinopril and 12.5 mg hctz. I have had proggresive.extreme.fatigue, headache, blurred vision, palpitations, amxiety and now digestion problems. I have explained these issues to the doc but as you can see he just adjusted my dosage and tells me I'm absolutely healthy. I had none of these issues before I started prescription therapies. However to answer the question. I don't think there is a "break in" period for some. If your body can't handle it, it can't handle it.
How long is the adjustment period, it has been 1 1/2 months
Lisinopril side effects:
You may experience headache, dizziness, lightheadedness, fatigue, nausea, diarrhea, dry cough or blurred vision as your body adjusts to the medication. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.
I have three different reading glasses of progressive strength. Sometimes the lower strength is sufficient, and at other times the stronger is needed!! I never considered it a serious problem, just part of the aging process. I take lisinopril and beta blocker.