Allergic reactions can be dangerous fast. Dizziness, nausea, vomiting, or anything that you notice out of order with your breathing or heartbeat is enough to call 9-1-1 and tell them you may be having an allergic reaction.
But what do they mean? It does not mean the products are low quality or dangerous, it just means there could be just one ingredient you are allergic to. Unless your enroller is a doctor, they are not qualified to tell you what to do. Only your doctor can identify what you're allergic to. I have taken Melaleuca vitamins for quite some time. Doctors recommend taking a multi-vitamin, and these qualify as that. I do not take any other proprietary products or supplements, just the vitamins and that's it. My doctor actually told me that my calcium levels are high, not dangerously, but high enough that I shouldn't be guzzling milk or taking extra calcium products, so I don't order or take the separate calcium tablets.