You can get imitation vanilla essence which I believe has little, although it doesn't have a very strong vanilla flavour so you need about double the amount. Next step up is vanilla essence, it has a little sugar but overly nothing much to worry about it's got a moderate flavour so you can use the same amount as per recipe. Next level up is vanilla extract, it's got a very strong flavour and you don't need as much depening on taste, same amount as recipe or less it contains quite a bit of sugar though. The best one to get is vanilla paste, it's got the best flavour and you only need a little. Honestly, I'd go the vanilla extract. Youd don't need much and the amount of fructose you get in one tiny teaspoon is very minimal.