Film-forming agent in sprays

As with film coatings for tablets, a combination of copovidone with a cellulose derivative can also be used for spray solutions, as this both improves the solubility of ethylcellulose and reduces the hygroscopicity of a pure copovidone film. 

Fill the solution into spray cans with the necessary quantity of propellant (e.g. propane/  

The formulation in Table 180 is an example of an antimycotic film plaster spray containing the drug, clotrimazole. Here, copovidone is used as the sole film-forming agent. 

Similar topical formulations containing steroids, antibiotics and antimycotics are described in patents [468,469]. Nifedipine is an example of a drug that is used in sublingual sprays with copovidone [468]. 

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