Table 1. Studies that discuss zinc's role in wound healing.

Number of studies	Author name	Year of publication	Country of origin of study	Findings
1	Cereda E, et al. [39]	2009	Italy	There was a significant reduction in the size of ulcers after 84 days of supplementation of zinc, arginine, anti-oxidants, and high protein formula ( 8-20mg zinc daily).
6	Wilkinson EA, et al. [9]	2012	UK	Zinc oxide paste-medicated dressing with a concentration between 6-15% for chronic venous leg ulcer improved wound healing.
1	Sakae K, et al. [40]	2013	Japan	A study of 42 patients with ulcers treated with zinc-containing polaprezinc versus oral L-carnosine (at 34 mg per day) showed no difference in healing.
1	Attia EA, et al. [10]	2014	Egypt	Ninety non-diabetics patients with uncomplicated wounds treated with 0.2 mg/100 mL per 10cm2 of zinc chloride solution reported significant improvement in wound healing.