Drugs can interact at any stage from when they are mixed with other drugs in a pharmaceutical formulation or by a clinician, e.g. in an i.v. infusion or syringe, to their final excretion either unchanged or as metabolites. When a drug is added to an existing regimen, a doctor can evaluate the possibility of an interaction by logically thinking through the usual sequence of processes to which a drug is subject and which are outlined earlier in this chapter, i.e. interactions may occur:
• outside the body
• at the site of absorption
• during distribution
• on receptors or body systems (pharmacodynamic interactions)
• during metabolism
• during excretion.
Was this article helpful?
Do You Suffer From ASTHMA Chronic asthma is a paralyzing, suffocating and socially isolating condition that can cause anxiety that can trigger even more attacks. Before you know it you are caught in a vicious cycle Put an end to the dependence on inhalers, buying expensive prescription drugs and avoidance of allergenic situations and animals. Get control of your life again and Deal With Asthma Naturally