The Emax model is based on the equation:

 

 

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where Emax is the max (%) possible effect; EC50 is the concentration eliciting 50% of max effect; n is the Hill coefficient)

This interactive graph allows you to view the concentration-response relationship as you make different assumptions re the EC50 and Hill coefficient. You can toggle between the normal view and the semi-log plot.

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You can view short videos on the concentration response relationship here, here and here.

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To use the interactive graph for effect in a multiple ascending dose setting, click here.