Do you know a good formula for ranitidine syrup (10mg/ml) which is stable and acceptable in flavor?

This formula may give satisfaction (note, this is the formula for 15mg/ml!):

R/ranitidineHCl 1.67 G KH2PO4 0.30 g Na2PO4 2 aq 1.30 g Nasaccharin 100mg Aqua Conserv 30g Ethanol 96 ° 3.0 G Mint Essence 2 dr. SUGAR SYRUP AD 100ml  

Retention period: 2 month