If you've got a sweet tooth and you're following Slimming World, you'll know the struggle. You fancy something sugary, but you don't want to blow half your daily syns on a handful of sweets. The good news? There are loads of options out there that won't derail your progress — you just need to know where to look.
This guide covers every type of sweet you're likely to reach for, from boiled sweets and gummies to fudge, toffee, and retro pick and mix favourites. I've pulled together the syn values, compared the options side by side, and flagged the smartest choices in each category so you can satisfy that craving without the guilt.
Whether you're after something to suck on at your desk, a treat for film night, or just want to know which sweets give you the most for your syns, you're in the right place.
Before we get into the detail, here's a cheat sheet of the best low syn sweets across every category. These are the ones worth remembering next time you're standing in the confectionery aisle wondering what to grab.
| Product | Serving Size | Syns | Notes |
|---|---|---|---|
| Polo Mints (1 sweet) | 1 mint (1.8g) | 0.5 | One of the lowest syn sweets you can buy |
| Love Hearts (1 sweet) | 1 sweet (2g) | 0.5 | Nostalgic and practically free |
| Parma Violets (1 roll) | 1 roll | 2 | Entire roll for just 2 syns |
| Flying Saucers (3 saucers) | 3 saucers | 1 | Light as air — brilliant low syn pick |
| Refreshers (1 chew bar) | 1 bar | 1 | Tangy and satisfying |
| Marshmallows (1 regular) | 1 marshmallow (7g) | 1 | Surprisingly low — toast one for a proper treat |
| Drumstick Lolly (1 lolly) | 1 lolly | 2.5 | Lasts ages — great syn-per-minute value |
| Fruit Pastilles (1 tube) | 1 tube (52g) | 9 | About 1 syn per sweet — share the tube |
| Chupa Chups (1 lolly) | 1 lolly (12g) | 2.5 | Takes a good while to finish |
| Sugar-free Polo Mints (1 sweet) | 1 mint | 0.5 | Even the sugar-free version is a winner |
Keep this list on your phone for quick reference when you're shopping. Now let's break things down category by category.
Boiled sweets are genuinely one of the best choices when you're watching your syns. Why? Because they last. You can't inhale a boiled sweet the way you can demolish a bag of gummies — they force you to slow down, and that means more satisfaction for fewer syns.
| Product | Serving Size | Syns | Notes |
|---|---|---|---|
| Werther's Original (1 sweet) | 1 sweet (5.4g) | 1 | Creamy, buttery — the classic |
| Werther's Original Sugar Free (1 sweet) | 1 sweet | 0.5 | Half the syns, same taste |
| Polo Mints (1 sweet) | 1 mint (1.8g) | 0.5 | Minty fresh and barely any syns |
| Polo Fruits (1 sweet) | 1 sweet (3.5g) | 0.5 | Fruity alternative, same low syns |
| Fruit Pastilles (1 sweet) | 1 sweet (5g) | 1 | Chewable centre — a bit more-ish |
| Chupa Chups (1 lolly) | 1 lolly (12g) | 2.5 | Stick lolly — lasts 10+ minutes |
| Drumstick Lolly (1 lolly) | 1 lolly (11g) | 2.5 | Milk & raspberry flavour classic |
| Rhubarb & Custard (1 sweet) | 1 sweet (6g) | 1 | Old-fashioned favourite |
| Pear Drops (1 sweet) | 1 sweet (6g) | 1 | Strong flavour — one is often enough |
| Sherbet Lemon (1 sweet) | 1 sweet (7g) | 1 | Fizzy centre gives you two sweets in one |
Smart pick: Polo Mints at just 0.5 syns each are hard to beat. Keep a pack in your bag and you've always got a low syn option on hand. If you want something more indulgent, a single Werther's Original at 1 syn is creamy and comforting without doing any real damage.
Tip: Lollipops like Chupa Chups and Drumstick Lollies are brilliant because you physically can't eat them quickly. At 2.5 syns for 10-15 minutes of sweetness, that's exceptional value.
This is where most of us get into trouble. Gummy sweets are ridiculously easy to overeat — you open a bag of Haribo and suddenly half of it's gone. The syns aren't terrible per sweet, but they add up fast when you're eating them by the handful.
The key with gummies is portion control. Count them out, put the bag away, and actually enjoy what you've got.
| Product | Serving Size | Syns | Notes |
|---|---|---|---|
| Haribo Goldbears (mini bag) | 1 mini bag (16g) | 3 | Pre-portioned — the safest way to buy Haribo |
| Haribo Starmix (mini bag) | 1 mini bag (16g) | 3 | Mixed shapes keep things interesting |
| Haribo Tangfastics (mini bag) | 1 mini bag (16g) | 3 | Sour coating adds extra flavour punch |
| Wine Gums (3 sweets) | 3 sweets (21g) | 3.5 | Dense and chewy — take time to eat |
| Jelly Babies (3 sweets) | 3 sweets (20g) | 3.5 | Softer than wine gums, higher sugar |
| Percy Pigs (2 sweets) | 2 sweets (20g) | 3.5 | M&S favourite — portion carefully |
| Fruit Gums (1 tube) | 1 tube (48g) | 8 | About 1 syn per sweet — similar to Fruit Pastilles |
| Jelly Tots (1 bag) | 1 bag (42g) | 7 | Tiny sweets — easy to lose count |
| Midget Gems (5 sweets) | 5 sweets (25g) | 4 | Firmer texture, decent portion |
| Millions (1 tube) | 1 tube (40g) | 7 | Tiny but surprisingly synful in quantity |
| Skittles (1 bag) | 1 bag (45g) | 8.5 | Hard shell, chewy centre — share the bag |
| Turkish Delight (1 piece) | 1 piece (Fry's bar) | 4.5 | Rich and floral — one piece satisfies |
Smart pick: Haribo mini bags at 3 syns are genuinely the best way to enjoy gummy sweets on plan. The portion is already controlled for you, so there's no temptation to keep dipping in. You can find multipack boxes in most supermarkets — throw a few in your bag for the week.
If you prefer something with a bit more chew, Wine Gums are brilliant because they're so dense that three sweets actually feel like a proper portion. Percy Pigs are lovely but the syns do creep up — check out the full Percy Pigs syn guide for all the varieties including Reversy Percys and Percy Pigs Phizzy Tails.
Chewy sweets sit somewhere between boiled sweets and gummies. They're individually wrapped (most of them, anyway), which is actually a huge advantage for portion control. Unwrapping each one slows you down and makes you more mindful of how many you're eating.
| Product | Serving Size | Syns | Notes |
|---|---|---|---|
| Starburst (1 sweet) | 1 chew (4.6g) | 1 | Individually wrapped — easy to track |
| Chewits (1 sweet) | 1 chew (5g) | 1 | Strawberry, blackcurrant, or fruit salad |
| Maoam Stripes (1 bar) | 1 bar (7g) | 1 | Bright and tangy — kids love these too |
| Maoam Pinballs (3 sweets) | 3 sweets (15g) | 2.5 | Chewy centre with a crisp shell |
| Refreshers Chew Bars (1 bar) | 1 bar (10g) | 1 | Sherbet-fizzy, nostalgic |
| Fruit Pastilles (1 sweet) | 1 pastille (5g) | 1 | Technically chewy — bridges both categories |
| Nougat Bar (1 bar) | 1 small bar (28g) | 4.5 | Soft, chewy — can feel quite filling |
Smart pick: Starburst, Chewits, and Maoam Stripes are all 1 syn per sweet — you genuinely can't go wrong with any of them. Have two or three as an after-dinner treat and you've used just 2-3 syns. That's nothing.
Refreshers Chew Bars at 1 syn each are another cracking option, especially if you like that fizzy sherbet hit. They're cheap as chips too — grab a handful from the corner shop.
Fudge and toffee are richer and more indulgent than most sweets, which means the syns are a bit higher — but the upside is that a small piece can feel genuinely satisfying. You're not going to mindlessly munch through a bag of fudge the way you might with jelly sweets.
| Product | Serving Size | Syns | Notes |
|---|---|---|---|
| Cadbury Fudge Bar | 1 bar (25.5g) | 5.5 | The classic — fits easily in your syns |
| Fudge (homestyle piece) | 1 piece (15g) | 3 | Bakery or homemade — varies by recipe |
| Toffee (individual) | 1 toffee (8g) | 2 | Traditional wrapped toffees |
| Cadbury Eclairs (1 sweet) | 1 eclair (9g) | 2 | Toffee shell, chocolate centre |
| Werther's Original Soft Toffee | 1 sweet (7g) | 1.5 | Softer than regular Werther's |
Smart pick: A single toffee at 2 syns is a lovely little treat, and because you have to chew it properly, it lasts a decent while. Cadbury Fudge Bars at 5.5 syns are one of those chocolate bar sweets that feel naughty but are actually quite manageable. For more chocolate options, head over to our low syn chocolates guide.
Marshmallows are criminally underrated on Slimming World. They look and feel like a proper treat, they're incredibly versatile, and the syn values are surprisingly low. Honestly, if you're not already using marshmallows as your go-to sweet fix, you're missing a trick.
| Product | Serving Size | Syns | Notes |
|---|---|---|---|
| Regular marshmallows (1 large) | 1 marshmallow (7g) | 1 | Toast them for an instant upgrade |
| Mini marshmallows (handful) | 10g (approx. 8-10 minis) | 1.5 | Perfect in hot chocolate |
| Pink & White marshmallows (1 large) | 1 marshmallow (7g) | 1 | Same syns as regular — it's just food colouring |
| Marshmallow Fluff (1 tbsp) | 1 tablespoon (13g) | 2 | Spreadable — great on rice cakes |
| Foam Bananas (1 sweet) | 1 banana (6g) | 1 | Marshmallow-type texture, banana flavour |
Smart pick: Two regular marshmallows toasted over a gas hob or under the grill is a 2 syn dessert that genuinely feels indulgent. Drop a few mini marshmallows into a low syn hot chocolate and you've got a cosy evening drink for minimal syns. Have a look at the full marshmallows syn guide for more serving ideas.
Foam bananas are essentially marshmallow sweets in disguise — 1 syn each and that retro banana flavour is surprisingly moreish. Just count them out rather than eating from the bag.
Retro sweets are having a proper moment right now, and the good news is that loads of them are actually quite reasonable on syns. The trick with pick and mix is knowing the values before you start filling your bag — otherwise you end up with a random selection and no idea what it's costing you.
| Product | Serving Size | Syns | Notes |
|---|---|---|---|
| Love Hearts (1 roll) | 1 roll (24g) | 4 | Each sweet is 0.5 syns — entire roll is 4 |
| Parma Violets (1 roll) | 1 roll | 2 | Marmite sweet — love it or hate it |
| Refreshers (1 roll) | 1 roll (34g) | 6 | Fizzy sherbet discs — share the roll |
| Flying Saucers (3 saucers) | 3 saucers | 1 | Rice paper shells with sherbet inside |
| Drumstick Lollies (1 lolly) | 1 lolly | 2.5 | Proper retro — available everywhere |
| Sherbet Dip Dab | 1 pack (23g) | 4 | Sherbet with a lolly — keeps you busy |
| Sherbet Fountain | 1 tube (25g) | 4 | Liquorice stick and sherbet — nostalgic |
| Dolly Mixtures (5 sweets) | 5 sweets (20g) | 3.5 | Assorted shapes and flavours |
| Bon Bons (2 sweets) | 2 bon bons (12g) | 2 | Dusted sugar shell, chewy centre |
| Rhubarb & Custard (1 sweet) | 1 sweet (6g) | 1 | Hard-boiled classic — sharp and sweet |
| Pear Drops (1 sweet) | 1 sweet (6g) | 1 | Powerful flavour — very moreish |
Smart pick: Flying saucers at 3 for 1 syn are genuinely one of the best value sweets on plan. They're light, fun, and that sherbet filling gives you a proper hit. Parma Violets are another winner at just 2 syns for an entire roll — if you like the flavour, they're an absolute bargain.
Building your own "syn-counted pick and mix" is a brilliant strategy. Grab a few flying saucers, a couple of bon bons, and a drumstick lolly and you've got a proper little selection for about 5-6 syns total.
Sugar-free sweets seem like the obvious answer when you're counting syns — no sugar means fewer calories, which means fewer syns, right? Well, mostly yes, but there are a few things to know before you stock up.
Sugar-free sweets use sugar alcohols (things like sorbitol, maltitol, and xylitol) to replace regular sugar. They do have fewer calories, so the syn values are lower, but they still aren't completely free. And there's the, shall we say, digestive issue — eat too many sugar-free sweets and you'll likely regret it. The sugar alcohols can cause bloating, cramps, and worse. You've been warned.
| Product | Serving Size | Syns | Notes |
|---|---|---|---|
| Werther's Original Sugar Free (1 sweet) | 1 sweet | 0.5 | Half the syns of regular Werther's |
| Sugar-free Polo Mints (1 sweet) | 1 mint | 0.5 | Same fresh taste, marginally fewer syns |
| Ricola Sugar Free Herbal Drops (1 sweet) | 1 drop | 0.5 | Herbal flavour — doubles as a throat sweet |
| Sugar-free Fruit Drops (1 sweet) | 1 drop | 0.5 | Widely available in supermarkets |
| Sugar-free Jelly Sweets (5 sweets) | 5 sweets (20g) | 2 | Lower than regular — but watch the portion |
The verdict: Sugar-free sweets can save you a syn or two, but the savings aren't always dramatic. Werther's Original Sugar Free at 0.5 syns versus 1 syn for the regular version is a decent saving if you eat several. But for most people, the regular versions at 0.5-1 syn per sweet are already so low that going sugar-free isn't strictly necessary.
My advice: If you particularly like the taste of a sugar-free option, go for it. But don't force yourself to eat sugar-free sweets you don't enjoy just to save half a syn. Stick to 2-3 syns worth of the regular stuff and actually enjoy it.
Having the syn values is only half the battle. The real challenge is managing the cravings themselves — and that's as much about habits and mindset as it is about numbers. Here's what actually works:
Buy small. Mini bags, individual bars, and single rolls are your best friends. Yes, they cost more per gram than sharing bags — but you'll eat less overall, which means fewer syns and more weight loss. That's the real value.
Count it out. If you do buy a bigger bag, count your portion into a small bowl and put the bag away. Out of sight genuinely is out of mind. This works especially well with Haribo, Jelly Babies, and Wine Gums.
Use a syn budget. Decide in advance how many syns you're spending on sweets that day. If it's 3 syns, choose your treat and enjoy it fully rather than grazing on multiple things and losing track.
After meals, not between them. Having a sweet treat straight after lunch or dinner means you're already satisfied and less likely to overeat. A couple of Starburst after dinner (2 syns) hits the spot perfectly.
Evening cravings are real. If you always want something sweet in the evening, plan for it. Save 2-3 syns for a post-dinner treat and it won't feel like a surprise expense.
Choose slow sweets over fast ones. Boiled sweets, lollipops, and toffees last much longer than gummies and chocolates. A Drumstick Lolly at 2.5 syns will keep you occupied for 15 minutes. A handful of Jelly Tots at 7 syns will be gone in 30 seconds.
Freeze your sweets. Frozen marshmallows are chewy and take ages to eat. Frozen gummy bears become almost like boiled sweets. Same syns, way more eating time.
Pair with something free. A cup of fruit tea with a couple of sweets feels like a proper treat occasion rather than just mindless snacking. Make it an event, not a habit.
For more ideas on managing your syns throughout the day, check out our low syn snacks guide and low syn desserts collection.
Polo Mints and Love Hearts at 0.5 syns per sweet are the lowest. Flying Saucers at roughly 0.3 syns each are technically even lower. For a proper portion, Parma Violets at 2 syns for a whole roll are hard to beat.
A Haribo mini bag (16g) is 3 syns — that's your safest option. If you're eating from a larger bag, roughly 5 Haribo Goldbears is about 3 syns. Check our full Haribo syn guide for every variety.
No. Sugar-free sweets are lower in syns but not syn-free. They still contain calories from sugar alcohols and other ingredients. A sugar-free boiled sweet is typically 0.5 syns — better than regular, but not free.
Something that lasts. A Chupa Chups lolly (2.5 syns) or two toasted marshmallows (2 syns) while watching telly will satisfy most cravings. If you want something smaller, three Starburst chews (3 syns) are brilliant.
You don't need to avoid any sweets entirely — it's all about portions. That said, sharing bags of gummy sweets are the riskiest because they're so easy to overeat. Full-size bags of Skittles, Millions, or Jelly Tots can rack up 7-9 syns before you know it. Buy mini bags or count out your portion.
Absolutely. You have 5-15 syns per day (most people use 10-15), and spending 2-3 syns on a sweet treat is completely fine. The important thing is tracking it honestly and not letting it spiral. A daily Werther's Original at 1 syn is never going to derail your plan.
They're delicious, but at 1.75 syns per sweet they're pricier than most gummies. Two Percy Pigs (3.5 syns) versus a whole Haribo mini bag (3 syns) — you get more for your syns with Haribo. But if Percy Pigs make you happy, budget for them and enjoy. Life's too short.
Cinema pick and mix is tricky because you're choosing without labels. Your best bet: stick to sweets you know the values of. A few foam bananas, some bon bons, and a couple of dolly mixtures will keep you in safer territory than diving into the chocolate-coated options. Or just take your own pre-counted sweets — no shame in that.
Here's a summary of the best sweets in each category to save or screenshot for your next shop:
| Category | Best Choice | Syns | Why It Wins |
|---|---|---|---|
| Boiled sweets | Polo Mints | 0.5 per sweet | Lowest syn, always available |
| Gummy/jelly | Haribo mini bag | 3 per bag | Pre-portioned, variety of flavours |
| Chewy | Starburst | 1 per chew | Individually wrapped, great flavours |
| Fudge & toffee | Individual toffees | 2 per sweet | Rich and satisfying, lasts well |
| Marshmallow | Regular marshmallows | 1 per sweet | Toast them — game changer |
| Retro | Flying Saucers | 1 for 3 saucers | Incredibly low syns, fun to eat |
| Sugar-free | Werther's Sugar Free | 0.5 per sweet | Tastes almost identical to original |
The golden rule: the best low syn sweet is the one that actually satisfies your craving. There's no point eating three things you don't really fancy when one thing you love would have cost fewer syns and made you happier. Pick your favourite, track it, enjoy it, and move on.
Looking for more ways to use your syns wisely? Browse our low syn chocolates guide for chocolate bars and treats, our low syn snacks page for savoury options, or our low syn desserts collection for after-dinner ideas.
Related Articles
200+ foods with syn values & calories.
Print it, stick it on the fridge!
