Exactly, in fact thinking of just how many prescription drugs could interect with it, before anyone tries this stuff, I'd suggest looking up any prescription meds they might take in the British National Formulary for any possible interactions that this stuff can have with SRI's, SSRIs, MAOIs, anti-epileptics, analgesics, Tryptans (migraine drugs) and anything else that works on the central nervous system. It doesn't matter that you might have used nicotine in tobacco or vaped for years as this stuff is from a very different family of drugs.
My first thought would be that it could possibly trigger Serotonin Syndrome in anyone taking any of the above - been there once from prescription branded antidepressants reacting with anti-seizure meds; it happens very fast and if you don't know the symptoms you wouldn't get help/advice quickly enough.