ESTIMATION OF SILDENAFIL CITRATE TABLET BY USING HPLC …

In up to 20% of patients, nitroglycerin is not tolerated and additional patients do not respond to the treatment. It can also cause severe hypotension, circulatory collapse, and death if used together with phosphodiesterase type 5 inhibitor drugs that are prescribed for erectile dysfunction, such as Viagra, Cialis and Levitra. ................
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