Whether you’re run down, jet lagged or feeling a cold coming on, the best greens powders could be the vitamin boost your body (and immune system) is in desperate need of.These plant-based supplements blend nutrient-dense vegetables, fruits, and algae such as spirulina, wheatgrass, and kale powders. Many formulas are fortified with iron, zinc, and vitamins C and B12, alongside digestive enzymes, gut-supporting probiotics, and adaptogenic mushroom extracts. While greens powders cannot replace whole foods, daily consumption can aid with digestion, alleviate bloating, and elevate natural energy levels.Navigating the market can be tricky, so identifying your primary health goal – whether that is targeted gut health, a metabolic lift, or clearer skin – is an ideal starting point. Budget plays a decisive role too, which is why my extensive evaluation covers everything from luxury, all-in-one investments like AG1 to highly effective high-street budget buys. I spent months testing the UK's leading greens powders to see how well they mix, flavour profile, and nutritional density to help you make an informed choice. Read on for my verdict.Read more: The best supplements to take, according to expertsEach powder was tested on an empty stomach in the morning (Sarah Finley/The Independent)The best greens powders for 2026 are: Best overall – AG1 greens: £93, Amazon.co.ukBest budget organic blend – Sevenhills organic superfood blend: £18, Amazon.co.ukBest for hair and nails – Shreddy supergreens: £36, Shreddy.comBest for immunity – Myprotein green superfood blend: £24, Myprotein.comBest for vitamins – Huel daily greens: £50, Huel.comRead more: I asked a nutritionist if we need electrolytes for everyday exercise