Drug Interactions

A drug-drug interaction occurs when the effect of one drug is altered by the presence of another drug in the body.
There are two types of drug interactions: pharmacokinetic and pharmacodynamic.

Pharmacodynamic interactions occur when the effect of one drug is changed by the presence of another drug acting at the same biochemical or molecular site. These interactions are frequently associated with synergism, antagonism, or altered cellular transport, and they affect organ systems and/or receptor sites.

Pharmacokinetic interactions influence the disposition of a drug in the body and involve the effects of one drug on the absorption, distribution, metabolism and/or excretion of another drug. These interactions frequently cause marked shifts in the serum drug levels and alter clinical response.

Clinically significant drug interactions

You can always use an Interactions Checker provided by

By HealthyStock Research Group, May 2014
Medical resources reviewed: August 2018


Contact Us

Copyright 2009-2018 All rights reserved.
All information on is intended for general knowledge only.
For medical advice consult with your physician.