Furthermore, DPP4 inhibitors are effective in the prevention and treatment of pulmonary fibrosis, heart disease, and kidney damage, and since these conditions are a long-term consequence of COVID-19, it is plausible to anticipate that DPP-4 inhibitors will be effective in reducing COVID-19’s long-term repercussions (Smelcerovic et al., 2020). Here, DPP4 is linked to pulmonary fibrosis.