F+NCTION Discount Codes for October 2026

4 codes & dealsChecked 1 hour ago by

Ron fnction.co

35%Best offer for everyone

4Deals, no code needed

Current F+NCTION voucher codes and offers

30-dayrefund

New customers

30-day money-back guarantee

No code needed ·

Get deal

Freeover £40

Free delivery

Free delivery on orders over £40

No code needed ·

Get deal

30%subscribe

Subscribe and save 30% on a 30-day supply, with a free frother

No code needed ·

Get deal

35%subscribe

Subscribe and save 35% on the 60-day CALM plan

No code needed ·

Get deal

Today's F+NCTION deals

Updated 5 October 2026

Offer	Saving	Ends
30-day money-back guarantee Deal	30-day	Ongoing
Free delivery on orders over £40 Deal	Free	Ongoing
Subscribe and save 30% on a 30-day supply, with a free frother Deal	30%	Ongoing
Subscribe and save 35% on the 60-day CALM plan Deal	35%	Ongoing

About F+NCTION

F+NCTION (written FNCTION) is a London brand run by FNCTION LTD, a company incorporated in 2024. It sells one main product, CALM, a salted chocolate cacao drink powder made in the UK that is meant to be mixed with water as an evening drink.

Each serving lists 10g of hydrolysed marine collagen peptides, ashwagandha root extract, magnesium bisglycinate, L-theanine, reishi, chamomile, passionflower and B vitamins. It comes as a 30-day supply, as 15 or 30-day sachet boxes, or as a starter pack with a frother and glass. It is a food supplement for adults; check the full ingredient list if you have allergies or take medication.

One-off prices start at £49.99, and subscribe-and-save plans cut the price by 30% or 35% with free extras on the first order. UK delivery is by tracked Royal Mail or similar, there is a 30-day money-back guarantee on first purchases, and the shop also ships to Europe and over 60 other countries.

F+NCTION delivery and returns

Delivery	UK tracked delivery in 2 to 4 business days for £5.99 per the shipping policy; product pages show free delivery over £40.
Returns	30-day money-back guarantee: ask within 30 days of receiving your order; shipping costs are not refunded and repeat purchases are excluded.

How to use a F+NCTION voucher code

Tap Get code on the offer you want. We copy the code for you and open F+NCTION in a new tab.
Check the offer's Terms first: some codes need a minimum spend, are for new customers only, or exclude sale items.
Add what you want to your basket on fnction.co.
Go to the checkout and choose your delivery option.
Paste the code into the discount code or promo code box and apply it. Check the discount shows in your order total before you pay.
Didn't work? Tap Didn't work? under the code so we can recheck it, and read why codes fail.

Ways to save at F+NCTION

Subscribe and save 30% on a 30-day supply, or 35% on the 60-day plan, if you plan to buy regularly.
The 60-day subscription includes the starter pack with frother and glass free with the first order.
Keep your basket over £40 to get the free delivery shown on product pages.
The 15-day sachet box at £49.99 is the cheapest way to try it once.

F+NCTION customer service & reviews

Contact F+NCTION

F+NCTION help centre

What shoppers say

Read F+NCTION reviews on Trustpilot

Frequently asked questions

What's the best F+NCTION code today?

There's no F+NCTION discount code to copy right now. The best offer is subscribe and save 35% on the 60-day CALM plan (best offer for everyone), no code needed.

Does F+NCTION do student discount?

We don't know of a student discount at F+NCTION at the moment.

Does F+NCTION offer a Blue Light or Armed Forces discount?

We don't know of a Blue Light or Armed Forces discount at F+NCTION at the moment.

Does F+NCTION offer free delivery?

UK tracked delivery in 2 to 4 business days for £5.99 per the shipping policy; product pages show free delivery over £40.

What is F+NCTION's returns policy?

30-day money-back guarantee: ask within 30 days of receiving your order; shipping costs are not refunded and repeat purchases are excluded.

How do I contact F+NCTION customer service?

Use the help centre on the F+NCTION website.

Can I use more than one F+NCTION discount code?

Usually not: most stores, including F+NCTION, accept one discount code per order. Automatic deals and sale prices can often be combined with a code, so check the terms on each offer.

Does F+NCTION offer a first-order discount?

Yes. Look for the New customers badge on the offers above.

Can I use a F+NCTION discount code on sale items?

It depends on the code. Many discount codes exclude items that are already reduced, so open Terms on the code before you use it.

When does F+NCTION usually run 20% off promotions?

Over the last two years we've listed F+NCTION codes or deals worth 20% or more in October. Sign up for alerts to hear when the next one lands.

Why didn't my F+NCTION code work?

Most codes exclude gift cards and items already reduced, and some need a minimum spend or are for new customers only. Open Terms on the code, or tap "Didn't work?" and we'll recheck it.

How do I use a F+NCTION discount code?

Tap Get code and we copy it for you. Add your items to the basket on the F+NCTION website, then paste the code into the discount or promo code box at checkout.