What are some good suggestions for chemo for stage 4 lung cancer?

Oncologist. Most oncology protocols are platinum based. Your oncologist can appropiately advise further.
It depends. It depends on the cancer type. In small-cell lung carcinoma, Cisplatin and Etoposide are used. In advanced non-small cell lung carcinoma, two drugs are used, with one is often platinum-based (either Cisplatin or carboplatin). Other commonly used drugs are gemcitabine, Paclitaxel and docetaxel. Vinorelbine and Cisplatin is more effective in aduvant chemo. Regardless, 5 year survival is <5%.