What are the types of drug actions?
As a result, they cause the human body to react in a specific way. Based on drug action on receptors, there are 2 different types of drugs: Agonists – they stimulate and activate the receptors. Antagonists – they disable the agonists from stimulating the receptors.
What are drug actions and describe?
A drug’s action is affected by the quantity of drug that reaches the receptor and the degree of attraction (affinity) between it and its receptor on the cell’s surface. Once bound to their receptor, drugs vary in their ability to produce an effect (intrinsic activity).
What are the sites of drug action?
A drug’s site of action can be defined at different scales: anatomical (the compartment the drug has to reach, e.g. tissues), cellular (the cell type the drug has to reach) and molecular (the molecular target to which the drug needs to bind, e.g. cell surface receptor, intracellular component).
What is selective drug action?
Selectivity refers to a drug’s ability to preferentially produce a particular effect and is related to the structural specificity of drug binding to receptors. For example, cyclooxygenase-2 (COX-2) preferential NSAIDs demonstrate partial specificity for COX-2, the inducible enzyme formed at sites of inflammation.
What is the primary action of a drug?
The primary effect is the desired therapeutic effect. Secondary effects are all other effects beside the desired effect which may be either beneficial or harmful. Drugs are chosen to exploit differences between normal metabolic processes and any abnormalities which may be present.
What is a secondary action of a drug?
Secondary effects are all other effects beside the desired effect which may be either beneficial or harmful. Drugs are chosen to exploit differences between normal metabolic processes and any abnormalities which may be present.
What is the desired drug action?
Desired or adverse drug actions occur when a compound with pharmacologic activity (the administered drug or an active metabolite) interacts with specific molecular targets.
What are the 5 different types of drugs?
Here are the five main categories and some information about each:
- Central nervous system depressants.
- Central nervous system stimulants.
- Opiates and Opiodes.
What are drugs and its types?
Drugs can be categorised by the way in which they affect our bodies: depressants – slow down the function of the central nervous system. hallucinogens – affect your senses and change the way you see, hear, taste, smell or feel things. stimulants – speed up the function of the central nervous system.
What are the 4 types of drugs and their effects?
Four Categories of Drugs and their Effects on the Body 1 Hallucinogens. 2 Opioids and Opiates. 3 Stimulants. 4 Depressants.
What is an example of specific drug action?
Specificity of drug action relates to the number of different mechanisms involved. Examples of specific drugs include atropine (a muscarinic receptor antagonist), salbutamol (a β 2 -adrenoceptor agonist), and cimetidine (an H 2 -receptor antagonist).
What are the actions of drugs?
Actions of drugs are the biochemical physiological mechanisms by which the chemical produces a response in living organisms. The effect is the observable consequence of a drug action.
What are the factors that affect drug action?
Drug Action 1 Reversibility. Most interactions between a drug and a receptor or between a drug and an enzyme are reversible: After a while, the drug disengages, and the receptor or enzyme resumes 2 Affinity and Intrinsic Activity. 3 Potency, Efficacy, and Effectiveness.