How Many Syns in Actimel?
By Jenny Updated
Actimel is one of those products that feels inherently healthy — all those adverts about immunity and L. casei cultures — and to be fair, it does have genuine probiotic benefits. But on Slimming World it is not free, and the full-fat flavoured versions carry more syns than most people realise when they are grabbing one out of the fridge as a quick snack.
The original full-fat Actimel comes in at 3.5 syns per 100g bottle, and the flavoured varieties like Strawberry and Mango Turmeric can nudge up to 4 syns. Those little bottles do not look like much, but if you are having one every day without logging it, that is potentially 28 syns over a week quietly disappearing from your allowance.
The good news is that the 0% fat range is significantly more syn-friendly at just 2 to 2.5 syns per bottle, and the plain 0% variety is almost indistinguishable from the original in terms of taste. If Actimel is part of your daily routine, switching to the 0% version is genuinely one of the easiest swaps you can make on plan — low effort, instant saving.
Actimel — syn values
| Portion | Syns | kcal |
|---|---|---|
| 1 bottle (100g) 0% Fat Original | 2 | 52 |
| 1 bottle (100g) 0% Fat Strawberry | 2.5 | 58 |
| 1 bottle (100g) Original | 3.5 | 76 |
| 1 bottle (100g) Multifruit | 3.5 | 74 |
| 1 bottle (100g) Strawberry | 4 | 79 |
| 1 bottle (100g) Mango Turmeric | 4 | 80 |
Numbers at a glance
Quick auto-calculated stats for Actimel.
Brand breakdown
Popular supermarket and branded products, with the portion-level syn count.
| Brand | Product | Portion | Syns | kcal |
|---|---|---|---|---|
| Actimel | 0% Fat Original | 100g | 2 | 52 |
| Actimel | 0% Fat Strawberry | 100g | 2.5 | 58 |
| Actimel | Original | 100g | 3.5 | 76 |
| Actimel | Multifruit | 100g | 3.5 | 74 |
| Actimel | Strawberry | 100g | 4 | 79 |
| Actimel | Mango Turmeric | 100g | 4 | 80 |
Lower-syn alternatives
Swaps that keep the feel of the original without the syn hit.
Plain fat-free yogurt with fruit
FreeA small pot of plain fat-free yogurt topped with fresh or frozen berries gives you a similar creamy, fruity probiotic experience for zero syns. It is more filling too and a genuinely satisfying swap.
Kefir 0% Fat (100ml)
1.5 synsIf you want a drinkable probiotic, kefir 0% comes in slightly lower than even the Actimel 0% range and has a broader spectrum of live cultures per serving.
Yakult Light
1.5 syns per bottleYakult Light is one of the lowest-syn commercial probiotic drinks available. The bottles are smaller at 65ml but the syn saving is real if you are having one daily.
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Products mentioned in this guide, available on Amazon UK.
Actimel Original Probiotic Drink 12 x 100g
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Actimel 0% Fat Strawberry 12 x 100g
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FAQs
Is Actimel free on Slimming World?
No, Actimel is not a Free Food on Slimming World. All varieties — including the 0% fat range — need to be synned. This is because Actimel contains natural milk sugars (lactose) as well as added sugars in the flavoured versions, which places it firmly in the synned category. It is a really easy one to forget to log, especially when you have been having it daily out of habit, so always make sure you are writing it down in your food diary.
How many syns is Actimel 0% Fat?
The Actimel 0% Fat Original is 2 syns per 100g bottle, making it the lowest-syn option in the entire Actimel range. The 0% Fat Strawberry variant is very slightly higher at 2.5 syns due to the fruit preparation added. Both are noticeably better value than the standard full-fat range which starts at 3.5 syns per bottle, so if you are an Actimel fan it is well worth making the permanent switch to the 0% version.
What is the best low-syn probiotic drink?
For a ready-to-drink probiotic, Yakult Light comes in at around 1.5 syns per small bottle and is worth considering if you want to go lower than Actimel. Among the larger brands widely sold in UK supermarkets, Actimel 0% Fat Original at 2 syns is one of the most convenient options. If you are happy to eat rather than drink your probiotics, plain fat-free yogurt is completely Free on Slimming World and contains plenty of live cultures — it is by far the most syn-efficient choice of all.
Is Actimel or Yakult better value on Slimming World?
Yakult Light edges ahead on pure syn value — roughly 1.5 syns per 65ml bottle versus 2 syns for Actimel 0%. However, Actimel bottles are larger so you are getting more volume for your syns. Both deliver live cultures. I would say choose whichever one you genuinely enjoy and will stick to consistently, because that matters far more than shaving half a syn off. The full-fat Yakult Original is higher at around 2.5 syns, so always check the label before you buy.
Should I have Actimel every day on Slimming World?
That is entirely up to you and how you like to spend your syns. If having an Actimel in the morning is part of a routine that keeps you on plan and feeling good, the 2-syn cost for the 0% version is very reasonable within a daily allowance. What I would caution against is having it mindlessly — drink it consciously, syn it properly, and enjoy it as part of your daily allowance. If you would rather spend those 2 syns elsewhere, plain fat-free yogurt is your Free probiotic alternative.
Lower-syn other alternatives
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