Example 13

Batch analytical data for Formula 21 was determined and recorded in Table 15. Results were recorded at time, T=0 and again at time, T=1 month at a temperature of 40° C. and 75% relative humidity (RH).

TABLE 15
Exemplary Liquisoft Composition
Matrix Formulation
Results at T = 1 months
Results at Initial T = 040° C./75% RH
Assay Results
Dextromethorphan Hbr98.0% label claim100.4% label claim
Menthol97.0% label claim100.4% label claim
Degradation Products Results
Dextromethorphan HbrRRT 1.09: 0.05%RRT 1.09: 0.05%
Total: 0.05%Total 0.05%
MentholNone DetectedRRT 1.15: 0.1%;
RRT 1.73: 0.2%,
Total 0.03%
Dissolution Study Results
Dextromethorphan HBrDextromethorphan HBr
15 minutes: 99%15 minutes: 99%
30 minutes: 98%30 minutes: 98%
45 minutes: 98%45 minutes: 98%
60 minutes: 98%60 minutes: 98%

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