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Interactions
Drug-Drug Interaction
| Term | Definition |
|---|---|
| Addition | The combined effect of two drugs; it is equal to the sum of the effects of each drug taken alone. |
| Antagonism | One drug works against the action of another drug. |
| Potentiation | One drug increases or prolongs the effect of another drug; the total effect is greater than the sum of the effects of each drug alone. |
| Synergism | The joint action of drugs in which their combined effect is more intense or longer in duration than the sum of the effects of two drugs. |