manifest. 1  readily perceived by the eye or the understanding; evident; obvious; apparent; plain: a manifest error. 2  Psychoanalysis. of or relating to conscious feelings, ideas, and impulses that contain repressed psychic material: the manifest content of a dream as opposed to the latent content that it conceals.
In medicine, an adverse effect is an undesired harmful effect resulting from a medication or other intervention such as surgery. An adverse effect may be termed a  side effect , when judged to be secondary to a main or therapeutic effect.
Side Effects. Dizziness, drowsiness, or headache may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching /swelling (especially of the face/ tongue /throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects.