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It is the opposite of an aphrodisiac, something that enhances sexual appetite. The word anaphrodisiac comes from the Greek privative prefix ἀν-, denoting negation, and aphrodisiac, from the Greek goddess of love, Aphrodite.
In contrast, stimulants, or "uppers", increase mental alertness, making stimulants the opposite drug class from depressants. Antidepressants are defined by their effect on mood, not on general brain activity, so they form an orthogonal category of drugs. Depressants are closely related to sedatives as a category of drugs, with significant ...
In contrast, the hormones peptide YY and leptin can have an opposite effect on the appetite, causing the sensation of being full. Ghrelin can be released if blood sugar levels dip too low—a condition called hypoglycemia that can result from long periods without eating. Stomach contractions from hunger can be especially severe and painful in ...
The English suffixes -phobia, -phobic, -phobe (from Greek φόβος phobos, "fear") occur in technical usage in psychiatry to construct words that describe irrational, abnormal, unwarranted, persistent, or disabling fear as a mental disorder (e.g. agoraphobia), in chemistry to describe chemical aversions (e.g. hydrophobic), in biology to describe organisms that dislike certain conditions (e.g ...
Aphrodisiac. An aphrodisiac is a substance alleged to increase libido, sexual desire, sexual attraction, sexual pleasure, or sexual behavior. [1] [2] [3] These substances range from a variety of plants, spices, and foods to synthetic chemicals.
Doxapram. An analeptic, in medicine, is a central nervous system stimulant.The term "analeptic" typically refers to respiratory stimulants (for example, doxapram).Analeptics are central nervous system (CNS) stimulants that include a wide variety of medications used to treat depression, attention deficit hyperactivity disorder (), and respiratory depression.
Alpha-adrenergic agonists have the opposite function of alpha blockers. Alpha adrenoreceptor ligands mimic the action of epinephrine and norepinephrine signaling in the heart, smooth muscle and central nervous system, with norepinephrine being the highest affinity.
Receptors can be activated by either endogenous agonists (such as hormones and neurotransmitters) or exogenous agonists (such as drugs), resulting in a biological response.A physiological agonist is a substance that creates the same bodily responses but does not bind to the same receptor.