Acid reflux

My daughter has had acid reflux since she was 6. We buy her medicine from Sam's club in bulk, it's a pack of 3 bottles. I opened the pack and got the 3 bottles out and started transferring all the pills into one bottle so we would have 3 bottles laying around. When I got to the last bottle and silver foil seal wasn't sealed on the bottle, it wasn't sealed on one side. Are the pills still okay? I've never had a bottle where the seal wasn't sealed. I know no one has messed with it because the 3 bottles were inside one package. That package was fine. Just that one bottles seal wasn't sealed.