Transdermal
delivery

 
       

EminTech 

 
   
Transdermal delivery of a drug avoids gastric environ-
ment and the first passage effect (metabolism in liver).
Transdermal delivery is excellent for local delivery.
Many substances require penetration enhancers
to penetrate Stratum Corneum in significant amounts.
 
    Left:
Red dye diffusion through epidermidis.
Three types of penetration enhancers were used.
No significant difference between enhancers was observed.
 
             
             
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