No; UK e-liquid is nicotine, PG, VG and flavouring only, and caffeine is not an approved additive. The buzz association is purely flavour memory, which is probably for the best at two hundred puffs a day.
Berries and ice, overwhelmingly: the sour-candy base loves both. Berry Bull and the NRG Ice blends are the two directions the genre has settled on, and both convert well from the disposable versions.









