Example 5

Additional formulations which vary the amounts of transcutol and ethyl alcohol were examined by the same procedure.

Formulations tested (Table 4):

Formula
D1C
PENNSAID
2%FormulaFormulaFormulaFormula
DiclofenacD37D38D39D40
IngredientWt %Wt %Wt %Wt %Wt %
Oleic Acid08.08.08.08.0
DMSO45.516.021.016.021.0
Transcutol026.021.021.016.0
Sodium Diclofenac2.02.02.02.02.0
Propylene Glycol11.011.011.011.011.0
Poloxamer P18800000
Ethyl Alcohol31.3534.034.039.039.0
Hydroxypropyl3.03.03.03.03.0
Cellulose
Water7.150000
TOTAL100100100100100

FIGS. 9, 10, and 11 depict a head-to-head comparison of Pennsaid and Formulation D34 as a delivered transdermal dose, dose retained in the skin, and calculated as percent delivery of diclofenac.

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