Best lactic acid buffer supplements in 2026: a UK guide
We make one of the products on this list, so read this with that in mind. We've kept the comparison factual: what's in each option, what the evidence says, what it costs per serving. You can check every claim.
Quick refresher before the list. The burn in your legs at threshold comes from hydrogen ions dropping muscle pH. Lactate gets the blame; H+ does the damage. A buffer is anything that helps you soak up those hydrogen ions and hold pace longer. Full explanation in our guide to how lactic acid buffering works.
The options, compared
Option
Format
Evidence
Cost per serving
Watch out for
Sodium bicarbonate
Powder (yes, baking soda)
Strong
Pennies
GI distress is common at race doses
Beta-alanine
Powder/tablets, taken daily
Strong
~20-40p
Needs 4+ weeks of loading; tingles
Maurten Bicarb System
Hydrogel sachets
Strong (it's bicarb)
Premium
Cost
Xendurance Lactic Acid Buffer
Tablets, taken daily
Mixed
See brand site
Proprietary-style lactate blend; month-long protocol
Torra Performance
Capsules, subscription-led
Mixed
£41.99 a pack
Full dosages not listed per ingredient
Interval Lactic Acid Buffer
Powder, mixes in water
Every dose published, see below
£1.00 (£29.99/30)
Ours, so we're biased
Where the evidence is strong
Sodium bicarbonate is the most studied buffer in sport. The International Society of Sports Nutrition's position stand concludes 0.2-0.5 g/kg improves performance in high-intensity efforts lasting roughly 1 to 12 minutes. It's also the cheapest option on this list by a mile.
The catch is your gut. A large share of athletes report GI symptoms after oral bicarbonate at race doses. There are ways to manage this (split doses, taking it with carbs, hydrogel delivery like Maurten's), and we've covered the protocols in our sodium bicarbonate guide.
Beta-alanine works differently: taken daily for weeks, it raises muscle carnosine, your intracellular buffer. A 2017 systematic review and meta-analysis found meaningful gains in efforts between 30 seconds and 10 minutes. It does nothing on race day if you start it on race week. Our beta-alanine for Hyrox post covers loading in detail.
Both of those options come with a condition attached. Bicarb asks your gut to cooperate on race day. Beta-alanine asks you to have started four weeks ago. That gap is where we built ours.
Honest recommendations
Racing in under 4 weeks and want the best-evidenced option? Sodium bicarbonate, if your gut tolerates it. Test it in training first, never on race day.
Got a full block ahead? Add beta-alanine now so the carnosine is loaded by race season.
Training through a block and want something you'll actually take every day? That's ours. It's the only option on this list that asks nothing of your gut and nothing of your calendar, with all 10 doses printed on the label so you can check them against the studies above. £1 a serving, peach lemonade, 30 servings.
FAQ
Sodium bicarbonate has the strongest evidence: 0.2-0.5 g/kg improves high-intensity performance in efforts of 1-12 minutes. Beta-alanine is the best-evidenced daily option. Lactate-based buffers have mixed evidence but avoid the GI issues common with bicarbonate.
Tablet products are usually lactate salts. Evidence is mixed: one controlled trial found no improvement in blood buffering from chronic calcium lactate. Check the label for doses of ingredients with stronger evidence, like magnesium, potassium and taurine.
Each 8.6g serving contains 1g lactate (from calcium lactate), 1g taurine, 525mg potassium, 360mg calcium, 225mg magnesium, 200mg papain, 600mg citrulline DL-malate, plus vitamin C, selenium and chromium. Every dose is printed on the pouch. 30 servings, £29.99, vegan and gluten-free.