As above, but referring to unintended or unexpected side-effects of an effective or ineffective treatment.

Some of this complexity might be seen as unexpected side-effects.

Moreover, widespread worries about bad loans at some banks may have unexpected side-effects for these novel issues.

However, these can have unexpected, negative side-effects.

Does a change in one area of the notation lead to unexpected side-effects?

But, the telekinetic powers produce unexpected side-effects and soon the killers find that they have become the prey.

But one unexpected side-effect of scanning it was that she tended to respond with the punch lines ofjokes so old they were mummified.

The Clearwater's success in spurring cleanup efforts on the Hudson has brought some unexpected side-effects.

The test flight occurs with unexpected side-effects.