adverse effects

Unwanted negative outcomes

Adverse effects are unwanted or harmful outcomes, especially from medical treatments or drugs.

The phrase appears constantly in pharmaceutical contexts: The medication's adverse effects include nausea and dizziness.

Side effects is the more common term in everyday speech, while adverse effects dominates clinical and regulatory language, emphasizing harm rather than mere incidentality.

Related

off-label use · toxicity · pain · harm · consequences · reactions · contraindications · iatrogenic · damage · symptoms · risks · risk factors · polypharmacy · clinical trials · nausea · stomach upset · bad reaction · patient safety

Categories
Opposites
outcome valence

adverse effectshealth benefits

Employer-provided medical coverage

improvements · gains · advantages · benefits · upsides

intentionality of outcome

adverse effectsdesired effects

Results one aims for

primary effects · treatment goals · efficacy

Family

effect, effects, adverse, adversity, averse, adversely, adversities, aversive, averseness

Familiarity
Top 200,000
Profile
Used worldwide · Timeless · Abstract · Negative · Rated G