I will say, there is lots of info about ingredients on both NHS and CDC sites. And actually most of the info on these antivax websites about "toxic ingredients" are REALLY unfounded, very bogus, they worry about a lot of stuff which isn't really necessarily dangerous, neither dairy or gluten will hurt you, if you don't have an allergy (dairy being terrible for the cows/planet is a separate issue entirely) or things that have been studied loads and found to be fine, like microwaves, or mobile phone masts (I can see all my slightly hippy friends worrying about 5G at the moment which apparently "hasn't been studied" except, um, it has). And yet you will see on the same pages huge support for things like bamboo as a material to make eating utensils, even though bamboo contains large amounts of formaldehyde, encouragement to re-use old products, which, OK, saving the planet but older, more worn items leech all kinds of things (BPA, asbestos, lead paint...) not to mention older products having to meet less stringent safety standards, and medicinal marijuana seems to have massive support for everything from colds to labour to cancer, which is just bonkers to pretend that it's some wonder drug with no risks and no side effects ever.
My dentist recently mentioned to me that she does not do amalgam fillings, and I said oh yes, I heard that it's dangerous due to the mercury. She said well sort of, the level of mercury in a filling is far less than the dangerous level, so mercury fillings aren't dangerous to the patient themselves, the danger with the mercury is to dental staff, because if they do fillings regularly they are regularly inhaling the fumes, which is bad. And the reason she wouldn't do them is because it involves removing more healthy tooth than modern types of cement and resin.
Human bodies are pretty robust and can handle all sorts of things - it's not a bad idea to try and reduce our exposure to toxins such as those contained in vaccines, but it's a risk/benefit thing again - if you are seriously worried about them then cutting out vaccines, which have a miniscule amount of toxin and massive benefit, is stupid when compared to cutting out something which has a minimal benefit or is simply a convenience factor and has a much higher level of the toxin in to cut out.
I mean seriously if you think about it - cut out car travel or meat or plastic toys or whatever, these things make sense but to be highly suspicious of medicines? Even preventative ones? It doesn't make sense. You cannot cut out every source of "toxin" because it is in our soil and our air and our water, limiting exposure is sensible but not at the expense of something like medicine.