If you're looking for an energy boost in the afternoon, you might be tempted to grab a chocolate bar like Boost, but how many syns do Boost bars have on the slimming world plan? Are they high in syns?

Boost bars have 9.5 syns on the slimming world plan making them a very high syn chocolate bar to have, we would only recommend having these chocolate bars as the occasional treat on the slimming world.
In our SW syn guide below, we will discuss why Boost bars are so high in syns, syn values of Cadbury's chocolate bars and some low syn alternative chocolate bars for when you feel like something sweet.
At 9.5 syns for one chocolate Boost bar, Boost bars are very high in syns taking the majority of your 15 syn daily allowance on the plan.
These chocolate bars get their high syn value from the sugar and fat, having nearly 19g of sugar and 11g of fat in just one bar. We, therefore, suggest only having these as the occasional treat.
Cadbury has a few different varieties of their boost bar and lots of other chocolate bars with varying syn values, so as you can compare syns we've listed a few of their options down below.

If you find Cadbury boost bars to be too high in syns, there are lots of other low-syn alternatives to have for when you crave a chocolate bar but don't want to spend too many syns.

To conclude, Boost bars are high in syns having on average 9.5 syns for a bar, consuming a lot of your 15 daily syns, we recommend having these bars as an occasional treat because of their high sugar and fat content or picking a low syn alternative chocolate bar which starts as low as 3.5 syns.
Syn values are calculated using a formula based on calories, saturated fat and sugar content per serving. They’re not the same as calories — a product can be low in calories but higher in syns if it’s high in sugar or fat. Always check the official Slimming World app for the most accurate and up-to-date syn values.
Yes. When manufacturers reformulate their products, the syn value can go up or down. This is why we recommend double-checking with the Slimming World app or your consultant, especially if a product’s packaging has changed recently.
Most Slimming World members work with 5 to 15 syns per day. Your consultant will advise on the right amount for you. The key is to use your syns on the things you enjoy most — whether that’s a chocolate bar, a glass of wine, or a packet of crisps.
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