据印度代购了解，易瑞沙是最新的抗肺癌靶向药物，主要适用于治疗既往接受过化学治疗的局部晚期或者已经出现转移的非小细胞肺癌的患者。其作用是能够抑制肿瘤细胞生长及血管生成，最终将肿瘤细胞杀死。

According to Daigou India, Iressa is the latest targeted anti-lung cancer drug, which is mainly suitable for the treatment of patients with locally advanced or metastatic non-small cell lung cancer who have received prior chemotherapy. Its function is to inhibit tumor cell growth and angiogenesis, and eventually kill tumor cells.

据印度代购了解，易瑞沙最常出现的副作用有腹泻，皮疹，痤疮，瘙痒等，这种情况一般出现在初次服药一个月内，不过这些副作用是可逆性的。为了安全用药并减少副作用的发生，建议患者严格按照说明书指导用药，本品的推荐剂量是250毫克(1片)，一日1次，空腹服用或与食物同服。不可过量服用，过量服用之后，可能会给患者带来严重的副作用。

据印度代购了解，易瑞沙长期服用之后是会出现一些副作用，不过这些副作用比起化疗药物的副作用来讲，还是轻微的。但是也不易忽视，有的副作用也是比较严重的，像间质性肺病，该病症是导致患者死亡的原因。

According to Daigou India, there are some side effects after long-term use of iressa, but these side effects are mild compared with the side effects of chemotherapy drugs. But some side effects can be more serious, like interstitial lung disease, which is a cause of death.