How Many Syns In A Gin & Tonic? & Other Low Syn Beverages!

Updated on 
31 July, 2023

Low-Syn Drinks: Syn Values for Gin & Tonics & More

Whether you are looking for your new favourite low syn drink, or you planning your night out, you can happily drink a gin and tonic on the slimming world plan as long as your tracking the syns they have.

Gin and tonic generally have around 5-6 syns a glass when mixed with standard tonic water, however, with slimline tonic, this would be reduced to just 3-4 syns depending on the gin used inside of the drink.

Within our guide below, we will discuss how you can make a low syn gin and tonic, whether or not alcohol is okay to drink on the slimming world plan plus a few low syn alcoholic drink alternatives.

Can I Make My Gin & Tonic Lower In Syns?

Gin and tonic could potentially have up to 6 syns a drink depending on the gin used and tonic water used to mix, for example, one shot of Gordons Dry Gin is 2.5 syns, when mixed with 100ml of standard tonic water this adds up to 5.5 syns per glass.

You could have up to three of these gins and tonics before using your total daily syn allowance for the day making them fairly high in syns for just a drink.

To make your gin and tonic lower in syns we would suggest using slimline tonic which is syn free due to being low in calories or soda water as a mixer.

Standard Gin Syn Values

Gin typically has similar syns no matter the brand you buy, but they can vary slightly, so to keep you on track, we've listed the syn values of a few popular gin brands below.

  • Gordons Dry Gin 37.5% – 2.5 Syns.
  • Gordons Sloe Gin 26% – 3 Syns
  • Tesco Finest Aromatic Gin, 43% – 3 Syns
  • Gordons Dry Gin 37.5% vol – 3.5 Syns
  • Gordons Gin & Slimline Tonic – 4 Syns
  • Tesco London Dry Gin, 37.5% – 2.5 Syns
  • Gordons Dry Gin, 47.3% vol – 4.5 Syns

Standard Tonic Syn Values

Tonic also has similar syns but can vary according to if you buy sugar-free tonic water or full sugar tonic water, we've listed the typical syn values below.

  • Fentimans Light Tonic Water - 2 syns per 200ml.
  • Tesco Indian Tonic Water - 2 syns per 250ml.
  • Fentimans Pink Rhubarb Tonic - 3.5 syns.
  • Schweppes Tonic Water - 2.5 syns per 250ml.
  • SodaStream Classics Diet Tonic - SYN FREE.
  • Tesco Low-Calorie Indian Tonic Water With Lime - SYN FREE.
  • London Essence Original Indian Tonic Water - 2.5 syns.
  • Fentimans Pink Grapefruit Tonic Water - 3.5 syns per 200ml.
  • Tesco Low-Calorie Indian Tonic - SYN FREE.
  • Merchant's Heart Light Tonic - 2 syns.
  • London Essence Co. Grapefruit and Rosemary - 2.5 syns per 250 ml.
  • Schweppes Slimline Tonic Water - SYN FREE.

Is Alcohol Okay To Drink On Slimming World?

Alcohol is more than okay to drink within moderation on the slimming world plan as long as you are tracking the syns which are within your alcohol.

Most people on the slimming world plan to get a daily syn allowance of 15 syns a day, to avoid going over this allowance it's a good idea to save your syns if you know you are going to have an alcoholic drink and plan.

Low Syn Alcohol Beverages

If your find gin and tonic too high in syns or you are looking for a change that is lower in syns, we've listed some alternative alcohol beverages to try out below.

  • Smirnoff Vodka Cola - 9 syns per drink.
  • Aldi Greyson's Gin and Diet Tonic – 3.5 syns for 250ml.
  • Fevertree Elderflower Gin and Tonic– 9 syns for the bottle.
  • Gordon’s Slimeline Tonic and Gin - 4 syns a drink.
  • Kopparberg Gin Slimeline Strawberry and lime flavour - 3.5 syns a can.
  • Limehouse Aromatic Gin and Diet Pink Tonic - 3.5 syns for 250ml.
  • Navigator Gin and Ginger Rhubarb flavoured - 8 syns per can.
  • Sainsbury Gin and Tonic - 7 syns for a can.
  • Tesco Grain Vodka Lime and Lemonade - 3.5 syns per can.
  • Sainsbury Diet Version Gin Rhubarb and Ginger - 3.5 syns.

Final Words

Overall, gin and tonic are around 5.5-6 syns a glass making it fairly high in syns for just one drink, if you are going to drink on the slimming world plan then we suggest only drinking within moderation and saving some syns from your allowance to avoid weight gain.

Jennifer is a certified nutritionist and weight loss coach with a Master's in Nutrition from Cambridge. With over 10 years experience, she shares healthy recipes and science-backed slimming tips on SheCooksSheEats to help people reach their wellness goals. Jennifer stays up-to-date by regularly attending conferences and continuing her nutrition education. She aims to provide research-backed advice to inspire balanced, happy living.
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