What else can he do to heal his wound? I would like to know if there is another product he can take.

To help heal a wound, it is important to clean it properly with saline water or gentle soap and water, apply Polysporin to prevent infection, use a non-adherent bandage to protect the wound from bacteria and prevent it from sticking to the wound, and monitor any signs of infection like swelling and redness. If the redness continues to spread, seek medical attention as it could be a more serious infection requiring oral antibiotics.