They don't have adjuvants, but they do have lipid nanoparticles which allow the mRNA to breach cells. It's feasible that they could cause unexpected side effects.
NB: I'm personally going to get the first SARS-CoV-2 vaccine I can get, and I'm incredibly excited about mRNA vaccines in general. But, it's true that any time you inject a chemical into your bloodstream you're taking a calculated risk.
NB: I'm personally going to get the first SARS-CoV-2 vaccine I can get, and I'm incredibly excited about mRNA vaccines in general. But, it's true that any time you inject a chemical into your bloodstream you're taking a calculated risk.