This is Dr Basu, experienced Internal Medicine Specialist.
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One earlier dose should not cause any significant problem.
Drop in blood pressure can sometimes cause dizziness, fatigue, palpitations.
The efect of lisinopril may last for about 8 to 12 hours.
But the symptoms tend to appear within 1-2 hours if at all.
Drinking fluids and taking some salt will help if you do get the symptoms.
Usually you will be fine.
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