What are controlled drug release systems and give two examples.
Control drug release system will deliver the drug at a predetermined rate locally or systemically,for a specified period of time.
ADVANTAGE:increase the safety margin of high potency drug
: fluctuation in steady state level is reduced
DISADVANTAGE:decrease systemic availability
:retrieval of drug is difficult in toxicity
EXAMPLES:1.Rate programmed drug delivary system(ocuserts,progestasert IUD.
2.Activation modulated drug delivary system
summary:They release drug at a predetermined rate,for locally or systemically,for a specified period of time.Eg:ocuserts,progestasert
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