Xolair and PEG / polysorbate sensitivity?
Hi everyone, I was looking more into Xolair to treat my MCAS as it has been suggested by my doctors, but I’m concerned I may have some kind of hypersensitivity or allergy to PEGs, polysorbates and possibly poloxamers.
I had a pretty significant reaction to the Moderna vaccine and my MCAS symptoms became much worse afterward. I also reacted badly to MiraLAX and I generally do not tolerate most medications well. I’ve had issues with almost all antibiotics, liquid Benadryl, allergy pills, tretinoin, Pepcid, omeprazole, and I had a pretty severe reaction to dapsone as well.
I react to most personal care products like shampoos, conditioners, soap, makeup, lotions, sunscreen and skincare products. I’ve also noticed I often react to processed foods containing these types of emulsifiers like coffee creamers and ice cream.
I’m currently on compounded ketotifen and can’t really stop taking it, which has made allergy testing somewhat difficult and inconclusive since it interfered with my results when I attempted testing a few months ago.
I know Xolair contains polysorbate 20, so I’m nervous about whether I could tolerate it. Has anyone here with suspected PEG/polysorbate sensitivity or excipient issues still been able to tolerate Xolair? Or vice versa if you did not tolerate xolair do you suspect a polysorbate sensitivity or react to other medications?
I’m trying to figure out whether this is a viable option for me or if it isn’t worth the risk given my medical history. Thanks everyone.