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In-vitro release profiles of vagino-adhesive propranolol HCl gel formulations F3 ( Guar gum 3.0% w/w), F8 ( Xanthan gum 4.0% w/w), F13 ( Na alginate 6.5% w/w) and F17 ( HPMC 4000 4.5% w/w) at 37°C, citrate-phosphate buffer pH 4.5. Data are expressed as mean ± SD.
