FNCTION
F+NCTION sells a narrow range centred on CALM, an evening cacao-style drink combining marine collagen peptides with botanicals and magnesium. It is marketed as a supplement-style blend rather than a standard hot chocolate, so the main decisions are the sachet size and whether the optional frother is worth buying.
No codes right now. We haven't confirmed a FNCTION code or deal yet. Follow the store and we'll email you when one lands.
By Vouchernaut Editors, updated . We may earn a commission when you shop through links marked Ad, at no extra cost to you.
FNCTION discount codes and deals, October 2026
A good deal is worth checking.
No current offers have been confirmed. When we confirm a FNCTION code or deal, it's listed here.
AdCheck prices at FNCTIONFNCTION: what to know before you buy
Choosing a sachet size
The shop lists CALM as a 15 Day Sachet Box, a 30 Day Sachet Box and a separate CALM 30 DAY listing. Because the sources show prices of gbp54 for the 15 day box and gbp104 for the 30 day box, the longer box is not simply double the cost of the shorter one. Check the per-sachet figure on the live product page before you commit, and remember that prices can change.
Understanding what is in the drink
The product description lists hydrolysed marine collagen peptides, ashwagandha root extract, magnesium bisglycinate, L-theanine, reishi, chamomile and passionflower, along with vitamins B6, B12 and C. If you already take any of these ingredients, compare the full label on the product page with your existing supplements and speak to a pharmacist or your GP if you are unsure about combining them.
Deciding whether the frother is needed
The F+NCTION Frother is sold as a separate item. The product guidance suggests blending one sachet with water or milk, and stirring or shaking also works. If you already own a whisk or shaker, you may not need the frother, but it can help if you prefer a smoother, creamier texture.
Using CALM as an evening habit
The product is positioned as an evening drink to be sipped before bed. It is presented as part of a routine rather than as a treatment for any condition, so treat it that way when deciding whether it suits you.
Questions about FNCTION
Are there any FNCTION discount codes?
We don't currently list a confirmed discount code. That doesn't mean the store has no promotions; check its website for current prices.
What is CALM?
CALM is a cacao-style evening drink containing hydrolysed marine collagen peptides, ashwagandha root extract, magnesium bisglycinate, L-theanine, reishi, chamomile and passionflower, plus vitamins B6, B12 and C.
Do I need the frother to make CALM?
No. The product guidance says to blend one sachet with water or milk, and stirring or shaking also works. The frother is an optional extra for a smoother texture.
Who handles my order?
You complete your purchase with the retailer. For order changes, delivery questions or a refund, contact the seller shown on your order confirmation. Vouchernaut publishes shopping guides and offers; we don't process your purchase.
More vitamins & supplements stores
Every vitamins & supplements store →
Bodybuilding Warehouse
This is Bodybuilding Warehouse, a Manchester supplement retailer founded in 2008 that makes many of its own products in-house. You can shop protein, creatine, bars, pre-workout and vitamins.
Bud Bros
This is BudBros, a family-run UK online shop for CBD flower, hash, oils and vapes. Browse by indica, sativa or hybrid strain, and sign up to its rewards club if you plan to come back.
Fitimins
Fitimins sells wellness supplements and nootropic blends, positioned as formulas for different health and performance goals. It is a supplement-focused store, so shoppers usually come looking for a daily supplement or a targeted blend rather than general health products.
Get Nourished
Get Nourished sells personalised gummy supplement stacks, built to order from a short quiz. Each stack combines seven nutrients with a flavour you pick, and the company says the stacks are vegan and sugar-free. Whether that suits you depends on what you need from a daily supplement, so it helps to check the specifics before you commit.
Healthspan
This is Healthspan, a direct supplements supplier that has been making vitamins and supplements since 1996, based in Guernsey with a UK customer care team. You get everything from daily multivitamins to sports nutrition and pet health products.
Higher Nature
This is Higher Nature, a UK supplement company based in East Sussex and founded by Celia and Brian Wright. You get vitamins, minerals and food-based formulas, including its True Food range made from real foods.
HIRO
HIRO, the UK supplement brand formerly called HUX, sells electrolyte tablets, creatine, a nootropic and greens powders. Any live codes and deals from its programme are listed here, and you enter a code at its checkout.
Insynergy Labs
This is Insynergy Labs, a UK supplement brand that makes its capsules in UK facilities and sells them online. You can shop by goal, from sports nutrition and sleep to men’s and women’s health, with ingredients listed on every product page.