Efuma Nicotine Base is a base with nicotine produced in Denmark. Nicotine base is available in 10ml bottles with 50%PG/50%VG, 30%PG/70%VG and 100%VG.
ProNic+ Nic Shot is a base with nicotine produced in the UK. This 100%VG nicotine booster is available in 10ml bottles with 18mg/ml and 9mg/ml nicotine.
Qpharm is a base with or without nicotine produced in The Netherlands. This base is sold in 10ml bottles and is available with or without nicotine.