Pharmaceutical compositions and methods of using the same

1. A method for induction of local anesthesia prior to performing a medical procedure on, through, or adjacent to a mucous membrane of a nasal cavity of a patient comprising:

determining a Child-Pugh score for a patient;

soaking a plurality of absorbent articles in an aqueous solution comprising, by weight, about 3.6% to about 4.4% cocaine hydrochloride, about 0.07% to about 0.20% sodium benzoate, and citric acid; and

contacting at least one of the plurality of absorbent articles with a mucous membrane of the patient for up to about 20 minutes to reduce sensation in a body region of the patient, if the patient has a Grade A Child-Pugh score.

2. The method of claim 1 , wherein the aqueous solution further comprises at least one coloring additive.

3. A method for induction of local anesthesia prior to performing a medical procedure on, through, or adjacent to a mucous membrane of a nasal cavity of a patient comprising:

determining a Child-Pugh score for a patient;

soaking a plurality of absorbent articles in an aqueous solution comprising, by weight, about 3.6% to about 4.4% cocaine hydrochloride, about 0.07% to about 0.20% sodium benzoate, and citric acid; and

contacting at least one of the plurality of absorbent articles with a mucous membrane of the patient for up to about 20 minutes to reduce sensation in a body region of the patient, if the patient has a Grade A or Grade B Child-Pugh score.

4. The method of claim 3 , wherein the aqueous solution further comprises at least one coloring additive.

5. The method of claim 1 , wherein the aqueous solution comprises about 0.125% citric acid.

6. The method of claim 3 , wherein the aqueous solution comprises about 0.125% citric acid.

7. The method of claim 1 , wherein a pH of the aqueous solution is 2 to 4.

8. The method of claim 3 , wherein a pH of the aqueous solution is 2 to 4.