Active B Complete

Assists with energy production, boosts cognitive performance and aids neural communication.†

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Active B Complete

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Active B Complete


When a pro athlete needs to play a game under the weather or severely jet lagged, there is a standard protocol: a shot of B12 vitamin right in the butt cheek. B vitamins are involved in everything from the conversion of nutrients into neurotransmitters like serotonin to proper mitochondrial function.† You can feel it when you take a good B vitamin like Active B Complete— there’s no question that it’s working. It has 100% of the RDA in all of the B Vitamin categories, with hands down the best forms of those ingredients available in the world. You will have more energy, more resiliency and more bounce in your step.

Think of it like this:
“I’ve got your back, B.”

Basketball player

Think of it like this:
“I’ve got your back, B.”

Athlete performing lunges

Standout Ingredients


There is a reason that thiamine is first on the roll call as a B vitamin (Vitamin B1). It’s absolutely essential. It is a required cofactor for the body’s production of several critical enzymes, including those in pathways involved in intracellular glucose metabolism. But we wanted to step up the game, by providing thiamine supplementation in the form of Benfotiamine—a novel, lipid-soluble analogue of thiamine that research shows is over 3.5x more effective in raising bioavailable thiamine levels in the body than regular Vitamin B1.†

Gluten free, Soy free, Caffeine free
Vitamin B1 molecule
Vitamin B2 molecule
Vitamin B5 molecule
Vitamin B6 molecule

What You Need to Know:

You know those cookies, breads, and carbs you love? Benfotiamine assists the body in responding to the toxic breakdown of compounds generated from things like excess sugar consumption.†

Rock climber 1

Your “B” Is Only As Good As It Absorbs

Rock climber 2
Weight lifter

Not everyone handles the absorption of B vitamins well. There is a good portion of people, for instance, who struggle to uptake the essential B vitamin folate, or folic acid. For them, supplementation with a methylated version, like 5-methyltetrahydrofolate, can make a huge difference in overall mental balance. Generally speaking, the methylated form of Vitamin B, like our methylated form of B12 methylcobalamin, is more easily absorbed by the body. Our standout ingredient, Benfotiamine, has clinical research indicating that the bioavailability of thiamine in blood plasma is reported to be approximately 3.5 times greater after a dose of Benfotiamine than after a dose of Thiamine.† That is a huge difference in how effective your B vitamin supplement will be, so pay attention to your body and make sure you supplement with B vitamins that are packaged in a way that’s best for your system.

Benefits Of Active B Vitamins

Benefits Of Active B Vitamins

B vitamins help power your body’s critical systems. From mental support in the conversion of neurotransmitters, to energy support, to detoxification of sugar end products, a good B vitamin can make a huge difference in your day.† For example, suppose B vitamins boost your mental energy. Instead of surfing your Facebook at work because your brain is too tired to focus on more important tasks, you can actually start working on the long-term project that is going to take your career to the next level. While Alpha Brain can help make you think more clearly, Active B Complete can help give you the energy to actually start thinking, period.

Aubrey Marcus, Onnit Founder

“Taking Active B Complete is a no brainer for me. Since we formulated the sample batch, I haven’t missed a day. It’s been simultaneously the most productive and least stressful stretch of my life.”

— Aubrey Marcus, Onnit Founder

Getting down to business usually means long hours and late nights. B vitamins can help there, too. Research shows that they help reduce work-related stress and support a positive mood.† These changes can manifest on a physical level that others will notice as well: B vitamins have been shown to promote skin health.†

Active B Complete Ingredients & Use

Active B Complete
Active B Complete is rated 4.6 out of 5 by 37.
Rated 5 out of 5 by from Big help with energy Have used for a few years, def boosts my energy and helps me feel great. Def thankful for this product on home school days with my 3rd and 1st graders.
Date published: 2020-09-30
Rated 5 out of 5 by from GET SOME I was looking for something to increase my energy. I was taking droplet form of just b12 but I finally found this. I noticed an increase of energy in just two days. Great amount of vitamin b’s. Price is relative for what you buy from other products and this is proven with science on how it helps through all their med Analysis. Now taking total human instead! Love all the ONNIT products!
Date published: 2020-09-04
Rated 5 out of 5 by from Up-Take is key - Active B! My Wife has Iron deficiencies and she has used this suppliment in order to increase her 'up-take' of B-Vitamins. It has seemingly helped her well - even though it is her body that prevents the right amount of vitamins being up-taken from normal food. She was pleasantly surprised!
Date published: 2020-07-10
Rated 5 out of 5 by from Take it every day With some supplements you feel it when you take it, with others the effect is more noticeable when you don’t take it. This is a supplement that I take every day and can tell when I don’t.
Date published: 2020-06-16
Rated 5 out of 5 by from Solid B complex Great B complex to keep my cogntion up. Great before workouts or as daily part of a vitamin rutine
Date published: 2020-06-10
Rated 5 out of 5 by from Energy with no down side Believe you better then anything out there and no drop off
Date published: 2020-06-10
Rated 5 out of 5 by from I feel an absolute noticeable difference instantly I haven't felt like myself the last few months, decided to give this a try and it's incredible. I have much more energy during the day as well as feeling very alert. I love this stuff.
Date published: 2020-06-02
Rated 5 out of 5 by from Burn fat Burn fat. Easy to swallow. Burn fat. Easy to swallow. Burn fat. Easy to swallow. Burn fat. Easy to swallow
Date published: 2020-05-17
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