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The concept of additive effect is analogous to the concept of simple addition in mathematics. However, the additive effect is not simply the arithmetic summation of two (or more) drugs in most cases. [20] For an additive inhibition effect, drug A and drug B could each inhibit 20% individually, but the additive effect is not 40%.
Drug Adverse effects Cinchona bark Cinchona pubescens: Warfarin Possible additive effect [3] Chamomile: Blood thinners [23] Devil's Claw: grapple plant, wood spider Harpagophytum: Warfarin Additive effect [3] Ephedra Ephedra: Caffeine, decongestants, stimulants [15] Increases sympathomimetic effect of ephedra [3] Feverfew: featherfew Tanacetum ...
If a drug can bind to unexpected proteins, receptors, or enzymes that can alter different pathways other than those desired for treatment, severe downstream effects can develop. An example of this is the drug eplerenone (aldosterone receptor antagonist), which should increase aldosterone levels, but has shown to produce atrophy of the prostate. [3]
A popular example of drug–food interaction is the effect of grapefruit on the metabolism of drugs. Interactions may occur by simultaneous targeting of receptors , directly or indirectly. For example, both Zolpidem and alcohol affect GABA A receptors , and their simultaneous consumption results in the overstimulation of the receptor, which can ...
Type A: augmented pharmacological effects, which are dose-dependent and predictable [5]; Type A reactions, which constitute approximately 80% of adverse drug reactions, are usually a consequence of the drug's primary pharmacological effect (e.g., bleeding when using the anticoagulant warfarin) or a low therapeutic index of the drug (e.g., nausea from digoxin), and they are therefore predictable.
ADHD medication tied to 19% lower death risk. An observational study conducted in Sweden, whose results appeared in JAMA in March 2024, further emphasized the positive impact of ADHD medication on ...
Diphenhydramine is contraindicated in premature infants and neonates, as well as people who are breastfeeding. It is a pregnancy Category B drug. Diphenhydramine has additive effects with alcohol and other CNS depressants. Monoamine oxidase inhibitors prolong and intensify the anticholinergic effect of antihistamines. [48]
A classic example of this effect is the interaction between β-lactams, which damage the bacteria cell membrane, and aminoglycosides, which inhibit protein synthesis. [1] The damage dealt to the cell wall by β-lactams allows more aminoglycoside molecules to be taken up into the cell than would otherwise be possible, enhancing cell damage. [ 1 ]