They sell all kind of keto supplements: Exogenous Ketones, collagen protein, MCT, oil, nootropic supplements...
Ketolent meal replacement (3.5g of net cabs per 400kcal). https://www.amazon.com/Ketolent-Chocolate-Replacement-Optimized-Nutrition/dp/B0799C7JF6/ref=sr_1_8_a_it?ie=UTF8&qid=1535609519&sr=8-8&keywords=ketolent
Ketochow. Another meal replacement. https://www.amazon.com/gp/product/B07C598H3K/ref=pd_rhf_se_s_cp_0_1?ie=UTF8&pd_rd_i=B07C598H3K&pd_rd_r=2N1NEJS2XKPM9FXKP5XH&pd_rd_w=b8PfY&pd_rd_wg=4rH2e&refRID=2N1NEJS2XKPM9FXKP5XH&th=1