Can you redose on morphine?

Can you redose on morphine? Or is it like codeine and redosing wouldn't add to the high?
Please answer quick, thank you

No one replied I wish they has because I redose and it didn't do anything.

You can most certainly redose and it will add to the effect. It probably won't add as 'much' mg for mg as your first dose but it WILL help. Are you dependent? If you are, sensitization is probably to blame, at least to some degree.