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Christmas is typically a time for overindulgence, but if you're looking for an easy way to stay on top of your health this winter, all-in-one green vitamin drink AG1 is a popular choice amongst celebrities, sportspeople and health professionals alike. Usually quite a pricey buy, if you're interested in trying it then now's the time to shop, as the brand has just dropped its best offers of the year. AG1 – which counts Gwyneth Paltrow, Lewis Hamilton and Victoria Beckham as fans – has started its Black Friday sale early by offering money off its subscriptions plus a bundle of freebies that will save you over 50%. READ MORE: Best coffee machines tried and tested by the OK! team and now in early Black Friday sales READ MORE: 'Celebrity make-up artist Hannah Martin taught me how to do the easiest smoky eye ever' The most popular option is to sign up for a single subscription of a 30-day supply of a pouch of AG1 powder, currently reduced from £97 to £79 , and which works out at around £2.63 per day. From now until 2 December, however, you'll also get a special Black Friday bundle for free , consisting of a shaker, bottle of vitamin D3+K2 drops, AG1 gym bag and canister. Altogether with the product this would normally be worth £162, so you're saving 51% by getting it for £79 this November. Another option – and one to consider if you travel a lot – is the Black Friday deal on AG1 travel packs instead of a pouch; with the saving on the product itself plus the bundle of free extras, you're getting it all for £89 instead of £172 – a saving of 48%, reports the Mirror . AG1, a multivitamin powder packed with over 70 different ingredients, is recommended for morning consumption and claims to support the body in numerous ways, from reducing fatigue to enhancing skin, hair and nail health. I've used this before and really felt the benefits – you can read my full review here – but the iconic formula has recently been revamped to be even better. In order to compete with rival products like IM8 – David Beckham's (and possibly now Victoria's) vitamin drink brand – AG1's new formula now includes five new clinically studied bacterial strains and is shown to boost friendly bacteria in the gut by tenfold. Plus, it now contains more magnesium, in a tasteless form that is gentle on the gut and well absorbed. Of course, AG1 is still quite pricey. However, IM8 – which I've also sampled – is even pricier, at £89 a month. A slightly less expensive alternative that could be worth considering instead is Huel Daily Greens , which costs £45 per month or £50 for a one-off purchase.