MAX-40070 is a liniment with two dose specification: 0.5%, 2% (Weight/Volume). In SAD phase, MAX-40070 will be applied once in each cohort, and there will be 6 cohorts. For the first 2 cohorts, 0.5% MAX-40070 will be used. For the rest 4 cohorts, 2% MAX-40070 will be used. In MAD phase, MAX-40070 2% will be applied once daily for consecutive 14 days in each cohort.

Placebo is a liniment with two dose specification: 0.5%, 2% (Weight/Volume) to match with active drug in 2:1 manner ( 6 active: 2 placebo in each cohort).

In the SAD phase, the proposed doses will be increased gradually. Each cohort will consist of 8 subjects, with 6 subjects randomly assigned to MAX-40070.

During the MAD phase, the treatment will be administered once a day for 14 consecutive days.

skin irritation assessment will be performed during the treatment period. The dermal response score will be based on a visual irritation scale (0-7) that rates the degree of erythema, edema and other signs of cutaneous irritation. abnormal vital sign (including blood pressure, pulse rate, respiratory rate and oral temperatures), 12-lead ECG, hematology (hemoglobin, hematocrit, platelet count, RBC count, WBC count, with differential), blood chemistry (BUN, creatinine, total bilirubin, alkaline phosphatase, AST, ALT, GGT, LDH, glucose, albumin, total protein, bicarbonate, phosphate, sodium, potassium, chloride, calcium, total cholesterol, uric acid) and urinalysis (pH, specific gravity, protein, glucose, ketones, bilirubin, blood, nitrites, leukocytes, urobilinogen, microscopic urine analysis on abnormal findings) during the treatment period will be recorded and reported.

Pharmacokinetics

Pharmacokinetics