** Shares of nutritional products firm Herbalife <HLF.N> rise about 11% to $13.11 in afternoon trading

** Argus Research upgrades HLF to "buy" from "hold" on renewed confidence in its turnaround and growth prospects

** Expects mid-single-digit growth in 2025, driven by new products like HL/Skin and MultiBurn, following three years of decline

** Shares of HLF have surged 80% in six months, outperforming the Consumer Staples ETF XLP, which has fallen 0.9%

** "We warn that HLF shares are likely to be volatile and thus suitable only for risk-tolerant investors," Argus Research says

** 2 of 4 brokerages rate the stock "buy" or higher, 1 "hold" and 1 "sell" or lower; their median PT is $11

** Including session's moves, HLF stock is up ~96.2% YTD

(Reporting by Anuj T in Bengaluru)

((anuj.t@thomsonreuters.com))