The Pharmacokinetic Study of WH-1 Ointment in Subjects With Chronic Diabetic Foot Ulcers

Inclusion Criteria: 1. Male or female is at least 20 years of age; 2. Diabetes mellitus (type I or II) was diagnosed with an HbA1c ≤ 12.0% measured during screening or within three months prior to randomization; 3. The target diabetic foot ulcer must have the following characteristics: 1. ≤ Grade 2 per Wagner Ulcer Classification System; 2. Lower limbs; 3. No-infected; 4. A cross-sectional area of between 1 and 25 cm2 post-debridement; 4. If female and of childbearing potential has a negative pregnancy test and is neither breastfeeding or intending to become pregnant during the study; 5. Able and willing to follow with study scheduled visits, comply with study procedures, and sign the informed consent. Exclusion Criteria: 1. Acute Charcot' s neuroarthropathy as determined by clinical and/or radiographic examination; 2. Poor nutritional status defined as an albumin \< 2.5 g/dL; 3. AST and/or ALT \> 3X of the normal upper limit; 4. Clearance of Creatinine (Ccr) \< 30 ml/min; 5. Treatment with immunosuppressive or chemotherapeutic agents, radiotherapy or systemic corticosteroids within 4 weeks prior to enroll; 6. A psychiatric condition (e.g., suicidal ideation), current or chronic alcohol or drug abuse problem, determined from the subject' s medical history, which, in the opinion of the Investigator, may pose a threat to subject compliance 7. Subjects who have received an experimental agent within 30 days, prior to enroll. 8. Subjects who have received WH-1 ointment within 30 days, prior to enroll. 9. Subjects who have history of smoking (define as more than 20 cigarettes per day) within 3 months prior to admission to the Hospital site. 10. Judged by the investigator not to be suitable for the study for any other reason.