Shares of Nutriband Inc. NTRB, +157.80% rocketed 126.6% in very active trading Friday morning, after the developer of a fentanyl abuse deterrent patch said it was issued a full patent in South Korea for its lead technology Aversa. Volume spiked to 31.8 million shares, compared with the full-day average of roughly 55,300 shares, and enough to make the stock the most actively traded on major U.S. exchanges. The stock has already been halted once for volatility since the opening bell. The company said the patent, issued by the Korean Intellectual Property Office, underpins Aversa, which uses taste aversion to address primary routes of abuse for opioid based transdermal patches. Despite the stock’s more than doubling Friday, it was still down 40.9% this year, while the S&P 500 SPX, -0.26% has climbed 27.2%.