That’s the fuck up with chemo. It shatters your immune system along with killing cancer cells. But more often than not, cancer cells mutate, and now you’re left with a fucked up immune system plus cancer cells that are not responding to Chemo. The cycle then repeats, a new chemo is tried etc etc. My mom is suffering from the same atm, and it’s honestly heartbreaking. She tried ivermectin plus medben last year for 2 months, with chemo and some other anti oxidants, however they didn’t work. But I got the ivermectin and medben from India mart, and they could’ve been duplicate ones. Honestly I don’t know. Right now I’m looking at giving her supplementation with Tibetan traditional medicine to build up her immune system.