My dear sister did exactly that with superglue, mistaking it for eye drops. She managed to get herself to A & E by taxi and they just washed and washed it. She is very stoical.
I have been taking the minimum dose of Ramipril , 2.5 mg, for about a year with no obvious side effects. My blood pressure fluctuates hugely during the day, being very high (180/100) when I first get up, and falling to 100/60 after a very long and strenuous walk. I made notes for a week of both readings and showed them to my French doctor. He just shrugged and said 'C'est normal'. He says that about most things. I think he thinks I am a raving hypochondriac but my mother had some small strokes when she was about 86 that led to dementia. (That gives me 15 years to go!) She had decided to stop taking her bp tablets without consulting her doctor because they made her feel 'funny'.
I have only once felt light-headed on a walk, and I was told by a good friend with plenty of medical knowledge that it was because it was a very hot day , I had climbed for four hours, I had forgotten to take my water, and had not eaten anything since breakfast of a bowl of porridge several hours before. Nothing to do with my bp medication, just dehydration. Now, I never set off without a full water bottle and a banana, I gear my walks to the weather, and I have five minute stops about every half hour.