Insynergy Labs is a UK supplement brand, run by Koutos Ltd since 2017, selling around 45 supplements, from Magnesium Glycinate at £18.99 to the ten-ingredient Male One formula at £43.99 (October 2026). It delivers only within the UK: one bottle costs £3.99 to post and two or more go free. There are no subscriptions, so multi-buys and the codes below are the main ways to pay less.
2 codes and 5 deals right now, up to 30% off. See them all, or follow the store for new ones.
By Vouchernaut Editors, updated . We may earn a commission when you shop through links marked Ad, at no extra cost to you.
10%off
CodeEnds 31 Oct
10% off eligible collections. Valid on one-time purchases and subscriptions. Limited to one recurring subscription payment. No minimum purchase required. One use per customer. Cannot be combined with other discounts. Valid until 31 October.
5%off
CodeEnds 21 Nov 2035
For new customers only. Can be used once per customer on full-priced items. Enter the code at checkout to redeem. The offer cannot be combined with other discounts. Only redeemable in the UK.
Insynergy Labs sells around 45 food supplements, mostly familiar single ingredients plus a handful of blends, sorted by goal: sports nutrition, men's health, women's health, sleep and mood, digestion, joints, immunity and hair, and heart and ageing. In October 2026 Magnesium Glycinate cost £18.99, NAC Pro £19.99, Turmeric Curcuminoids £22.99 and Berberine Pro £23.99, while Magnesium Complex 4 in 1, ZMX Pro, Shilajit Pro and Adaptogen Pro were among the cheapest at £13.99. The priciest was Male One, a two-capsule daily blend of ten ingredients including KSM-66 ashwagandha, Korean ginseng, shilajit, maca and zinc, at £43.99.
The brand says its products are made in the UK in GMP, HACCP and ISO 9001-certified facilities and that every batch is third-party tested, and its FAQ says many are vegan. The company behind it, Koutos Ltd, was incorporated in England in 2017, the year the site gives for the brand's start.
The ingredient lists are the most useful part of each page, because the product copy leans heavily on health language and doesn't always say how many capsules a bottle holds. That makes the cost per day hard to compare with high-street supplement brands. The site's own safety notes say anyone with a medical condition or taking medication should speak to a healthcare professional before starting a product.
There is little independent feedback to go on. Insynergy Labs had no Trustpilot profile in October 2026, and the homepage's "4.9 from 1,500+ reviews" doesn't say where those reviews come from. Individual product pages carry their own reviews, typically a few dozen each (29 on Magnesium Glycinate).
Delivery is UK only, excluding the Channel Islands. A single bottle costs £3.99 to send and two or more bottles go free, applied automatically at checkout. Timing is less clear: product pages promise delivery in one to three days, but the shipping policy asks customers to allow 7 to 14 working days and to wait 10 working days before reporting a missing parcel.
Unopened bottles can be returned within 14 days of delivery for a change of mind, with the buyer paying the return postage, and refunds go back within 14 days of the parcel arriving. Opened supplements can't be returned for food safety reasons, with one exception: a 30-Day Guarantee that refunds one opened bottle, plus any sealed ones sent back, once per customer. On multi-buys the refund is per bottle at the price actually paid, so returning one bottle from a buy-three-get-one-free order returns a quarter of the total. Damaged, faulty or wrong items can be reported with a photo within 30 days, and the company covers the return.
The saving comes from multi-buys rather than subscriptions, which product pages say the brand doesn't offer. Free delivery starts at two bottles, which takes £3.99 off straight away. In October 2026 the site was also adding a free bottle of Magnesium Glycinate (£18.99) to orders of three supplements. The codes and deals on this page sit alongside those, and the FAQ says first-time customers get a discount.
Because the guarantee only covers one opened bottle, a single bottle is the lower-risk way to try something new, even after the £3.99 postage. For a supplement someone already takes, three bottles bring free delivery and the free magnesium as well.
We currently list 2 discount codes. Check each offer's terms, country and expiry date before using it. The retailer confirms eligibility at checkout.
Read the retailer's current policy before buying. Eligibility can depend on the product, its condition and whether it has been used or activated. Insynergy Labs returns policy
A single bottle costs £3.99 to deliver, and orders of two or more bottles get free UK delivery, applied automatically at checkout.
Product pages say one to three days, but the shipping policy asks customers to allow 7 to 14 working days and to wait 10 working days before reporting a missing parcel.
Its shipping policy covers the UK only and excludes the Channel Islands, and the FAQ says it currently ships across the UK.
Not as a change of mind, since only sealed bottles can be returned within 14 days. The 30-Day Guarantee is the exception: it refunds one opened bottle, plus any sealed ones sent back, once per customer, with the buyer paying return postage.
No. Product pages say there are no subscriptions, and the savings come from multi-buys instead, such as free delivery on two or more bottles.
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.
Bodybuilding Warehouse is a Manchester-based sports supplement retailer that also makes its own products. Its catalogue spans protein powders, creatine, protein bars and pre-workout, so the useful question is which format fits your routine. Compare ingredients, serving sizes and cost per serving before choosing.
BudBros is a UK online shop built around CBD flower, with hash, oils and vapes also in the range. The flower lineup splits into indica, sativa and hybrid strains, which matters more than the brand name when you are choosing what to buy. Here is how the range is arranged and what to check before ordering.
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 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 sells vitamins, minerals, herbal supplements, sports nutrition and pet supplements direct to customers. It has been trading since 1996 and ships free within the UK on subscriptions and on orders over £30. Returns are free for 30 days on unopened, undamaged stock in its original packaging.
Higher Nature is a supplements brand best known for its True Food range, which its own copy describes as made from real food rather than synthetics. Its catalogue spans omegas, multivitamins, probiotics and single-ingredient staples, so the most useful starting point is the ingredient you are after. Here is how to narrow the choice sensibly.
Nature's Best is a UK supplement brand that has sold direct to customers since 1981. Its range spans joint, bone, menopause, digestive, heart and skin products, many made in the UK and sold through its own website with delivery and returns terms set out clearly.
Myvitamins sells vitamins, minerals and nutricosmetic supplements, with gummies, collagen and multivitamins among the core lines. Established in 2012, it promotes a self-care approach rather than treatments. Delivery is the clearest selling point, though returns are strict, so it pays to check the sealed-product rule before ordering.
