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When two drugs affect each other, it is a drug–drug interaction (DDI). The risk of a DDI increases with the number of drugs used. [1] A large share of elderly people regularly use five or more medications or supplements, with a significant risk of side-effects from drug–drug interactions. [2] Drug interactions can be of three kinds ...
Version 3.0 also included drug transporter data, drug pathway data, drug pricing, patent and manufacturing data as well as data on >5000 experimental drugs. Version 4.0 was released in 2014. [ 4 ] This version included 1558 FDA-approved small molecule drugs, 155 biotech drugs and 4200 unique drug targets.
Pharmacology is the science of drugs and medications, [1] including a substance's origin, composition, pharmacokinetics, pharmacodynamics, therapeutic use, and toxicology. More specifically, it is the study of the interactions that occur between a living organism and chemicals that affect normal or abnormal biochemical function. [2]
A common drug from this example can be found is Seretide®, containing a long-acting β-2 adrenergic receptor agonist named as Salmeterol and a corticosteroid named as Fluticasone. [25] Additive interaction can also be found in combination therapy for treating hypertension.
By knowing the interaction between a certain site of a drug and a receptor, other drugs can be formulated in a way that replicates this interaction, thus producing the same therapeutic effects. Indeed, this method is used to create new drugs. It can help identify which patients are most likely to respond to treatment.
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.
Topics of pharmacodynamics. Pharmacodynamics (PD) is the study of the biochemical and physiologic effects of drugs (especially pharmaceutical drugs).The effects can include those manifested within animals (including humans), microorganisms, or combinations of organisms (for example, infection).
In this context, the biological target is often referred to as a drug target. The most common drug targets of currently marketed drugs include: [4] [5] [6] proteins G protein-coupled receptors (target of 50% of drugs) [7] enzymes (especially protein kinases, proteases, esterases, and phosphatases) ion channels ligand-gated ion channels
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