Objective To observe the effect of volatile oil from Wuyao (Linderae Radix) on hemorheology and nitric oxide (NO)-soluble guanylate cyclase (sGC)-cyclic guanosine monophosphate (cGMP) signaling pathway in rats with cold qi stagnation and blood stasis syndrome (QSBSS). Methods Forty-eight SD male rats were randomly divided into control group, model group, volatile oil from Linderae Radix high-, medium-, low-dose (3.76, 1.88, 0.94 g/kg) groups and Fufangdanshen tablets (1.2 g/g) group, with eight rats in each group. Except control group, rats of ...