Efectiv PeakO2, 6 Organic Mushrooms Clinically Researched for Endurance and Work Capacity
Efectiv Nutrition PeakO2 Mushroom Blend is an organic-certified adaptogenic mushroom powder designed to support endurance, oxygen utilisation and time to fatigue during training. It is aimed at athletes and gym users who want a non-stimulant approach to improving work capacity and output across repeated sessions over time, rather than a single-dose energy hit.
Each 2g serving contains the full PeakO2 blend of six mushrooms: cordyceps militaris (traditionally used for stamina and oxygen uptake), reishi (immune and recovery support), king trumpet, shiitake, lion's mane (cognitive support) and turkey tail (immune function). All six mushrooms are organic-certified and grown in the United States. Clinical research on PeakO2 at the 2g daily dose has demonstrated measurable improvements in peak oxygen consumption (VO2 max), a reduction in blood lactate levels during exercise and a significant extension of time to exhaustion after 7 to 21 days of consistent daily use. The 120g tub delivers 60 servings.
Add one scoop to water, a protein shake, coffee or any pre-workout mix. PeakO2 is completely unflavoured and stimulant-free, so it does not alter the taste of your drink or affect sleep timing regardless of when you take it. Because it is an adaptogenic blend, the benefits accumulate with consistent daily use through a saturation effect similar to creatine, rather than providing an acute single-dose effect like caffeine.
PeakO2 suits endurance athletes, CrossFit trainees, runners, cyclists and anyone training at higher volumes who wants to improve oxygen utilisation and delay fatigue without relying on additional stimulants. It pairs naturally with Efectiv Performance Daily (creatine, beta-alanine, betaine) for a comprehensive stimulant-free daily stack, or with Legacy pre-workout on training days for combined adaptogenic and stimulant support. If you are only looking for a quick energy hit before a single session, a caffeinated pre-workout would be more immediately noticeable than PeakO2.
