A harmful or abnormal result. An adverse effect may be caused by administration of a medication or by exposure to a chemical and be indicated by an untoward result such as by illness or death.

An unexpected medical problem that happens during treatment with a drug or other therapy. Adverse effects do not have to be caused by the drug or therapy, and they may be mild, moderate, or severe. Al [..]

Change in biochemistry, physiology, growth, development morphology, behavior, or lifespan of an organism which results in impairment of functional capacity or impairment of capacity to compensate for [..]

An unfavorable, detrimental, or pahtologic reaction to a drug that occurs when appropriae doses are given to humans for prophylaxis (prevention of disease), diagnosi, and therapy. , (Response to a dru [..]

An unintended effect that is harmful or otherwise unwanted, and suspected to be related to, or caused by, a drug, treatment or intervention. See also Side effect.

An unwanted side effect of treatment

A change in the health, growth, behaviour or development of an organism that impairs its ability to develop or survive

A harmful result.

An adverse effect of a drug is a rare, undesirable and potentially harmful side effect. When determining whether a patient should be prescribed a certain drug, a medical professional will assess wheth [..]

This is abnormal, undesirable or harmful effect to an organism, indicated by some result such as mortality, altered food consumption, altered body and organ weights,altered enzyme levels or visible (p [..]

This term is defined in Ontario’s Environmental Protection Act as: “one or more of, (a) impairment of the quality of the natural environment for any use that can be made of it, (b) injury or damage to property or to plant or animal life, (c) harm or material discomfort to any person, (d) an adverse effect on the health of any person, (e) impairment [..]

An undesired or harmful effect resulting from treatment.

An unexpected medical problem that happens during treatment with a drug or other therapy. Adverse effects do not have to be caused by the drug or therapy, and they may be mild, moderate, or severe. Also called adverse event.

An undesired harmful effect resulting from an action or other intervention in a system (environment, livin being, ecosystem, etc).

This is an abnormal or harmful effect to an organism caused by exposure to a chemical. It is indicated by some result such as death, a change in food or water consumption, altered body and organ weights, altered enzyme levels, or visible illness. An effect may be classed as adverse if it causes functional or anatomical damage, causes irreversible c [..]

Change in morphology, physiology, growth, development or lifespan of an organism which results in impairment of functional capacity or impairment of capacity to compensate for additional stress or inc [..]

An action that has an apparent direct or indirect negative effect on the conservation and recovery of an ecosystem component listed as threatened or endangered [U.S. Forest Service (USFS)].