"unpleasant effect" is grammatically correct and can be used in written English.
Example: The new medication had an unpleasant effect on her, causing frequent dizziness and nausea.
Waititi remembers bleaching his own hair as a student, to unpleasant effect.
Moreover, which also doesn't put an unpleasant effect on our environment.
One other unpleasant effect of alcohol, which ties in with greater impulsivity, is an increase in irritability and anger.
The merchandising of cigarettes on a large scale became practical with the development, around the time of the First World War, of a slightly acid cigarette tobacco, which allowed smokers to inhale without an immediate unpleasant effect.
She charts her lonely intellectual progress with a scrupulousness that seems intended to confer a kind of martyred dignity upon her, though to me it just intensifies the unpleasant effect of pious sadism that emanates from the book whenever she appears.
It's not an entirely unpleasant effect, but it takes some getting used to, especially when you can hear your own voice bounced back at you in response.
Tobacco users quickly become tolerant of any unpleasant effects, such as bad taste or odor.
Should we really ban, tax or otherwise deter any action that has unpleasant effects on other people?
This can have a positive impact on the unpleasant effects of the menopause, such as flushing and night sweats.
The OFT may now feel that it has seen enough of pop-up billing's unpleasant effects.
Although many investigations have shown the unpleasant effects of air velocity and draught by subjective reactions10,11,12,13,14,15, few studies have addressed neurophysiological mechanisms underlying unpleasantness induced by airflow.
