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| Structure-activity Relationships |  |
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| The chemical structure of a drug determines its affinity for the receptor and ability to elicit a response (ie, intrinsic activity). Structure-activity relationships are exploited in drug design; relatively minor modifications to drug structure can potentially result in more favorable therapeutic profiles and/or pharmacokinetic properties. |
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| See Also |
| Introduction |
| Disposition and Fate of Drugs |
| Overview |
| Drug Absorption |
| Drug Distribution |
| Drug Biotransformation |
| Drug and Metabolite Excretion |
| Pharmacokinetics |
| Overview |
| Drug Concentration in Blood |
| Apparent Volume of Distribution |
| Drug Clearance (Elimination) |
| Drug Action and Pharmacodynamics |
| Overview |
| Drug Concentration and Effect |
| Agonists and Antagonists |
| Signal Transduction and Drug Action |
| Drug Dose and Clinical Response |
| Dosage Forms and Delivery Systems |
| Overview |
| Oral Dosage Forms and Delivery Systems |
| Oral Modified-release Delivery Systems |
| Parenteral Dosage Forms and Delivery Systems |
| Topical Dosage Forms and Delivery Systems |
| Chemical Residues in Food and Fiber |
| Overview |
| Chemical Residues in Foodstuffs of Animal Origin |
| Chemical Residues in Animal Fibers |
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