N.C. Gen. Stat. § 163-277
No person shall be excused from attending or testifying or producing any books, papers or other documents before any court or magistrate upon any investigation, proceeding or trial for the violation of any of the provisions of this Article, upon the ground or for the reason that the testimony or evidence, documentary or otherwise, required of him may tend to incriminate or degrade him, but such person may be subpoenaed and required to testify by and for the State relative to any offense arising under the provisions of this Article; but such person shall not be prosecuted or subjected to any penalty or forfeiture for or on account of any transaction, matter or thing concerning which he may so testify or produce evidence, documentary or otherwise, and no testimony so given or produced shall be used against him upon any criminal investigation or proceeding, but such person so compelled to testify with respect to any acts of his own shall be immune from prosecution on account thereof, and shall be pardoned for any violation of law about which such person shall be so required to testify.
N.C. Gen. Stat. § 163-277