As a human original cell line, SH‐SY5Y cell was used to confirm the cytoprotective effects of DMS. As shown in Fig. 4A, we found that DMS did not change the cell survival rate of SH‐SHY5Y cell in micromolar range. In Fig. 4B, H2O2 (150 μm) was used to induce oxidative stress on SH‐SY5Y cells. After treatment for 12 h, the cell viability of SH‐SY5Y cells decreased to 59 ± 7% of control group. DMS increased the cell viability of SH‐SY5Y cells under oxidative stress to 81 ± 2% at 6.25 μm, 90 ± 3% at 12.5 μm, 88 ± 3% at 25 μm, 82 ± 4% at 50 μm, and 76 ± 4% at 100 μm (Fig. 4B). In the trypan blue test, DMS at 12.5 μm increased the cell viability of SH‐SY5Y cells under oxidative stress from 22 ± 5% to 48 ± 5% (Fig. 4C).