SKU: 635743697

Core Nutritionals B-Complex

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Description

Core Nutritionals B-ComplexB vitamins are a group of eight essential vitamins with several critical functions in the body. Among the B complexs many critical roles are energy (protein, carbohydrates, and fat) metabolism, supporting and maintaining the healthy function of the adrenal glands, skeletal muscle function, and digestion. While rates of metabolism and clearance differ between each B vitamin, all B vitamins are water soluble and are thus not stored in fat. As a result,

B vitamins are a group of eight essential vitamins with several critical functions in the body. Among the B-complex’s many critical roles are energy (protein, carbohydrates, and fat) metabolism, supporting and maintaining the healthy function of the adrenal glands, skeletal muscle function, and digestion.

While rates of metabolism and clearance differ between each B vitamin, all B vitamins are water-soluble and are thus not stored in fat. As a result, the body simply excretes excess B vitamins in the urine and requires replenishment (from food or supplements) in order to maintain the cell functions to which B vitamins contribute. Along with choline and inositol added, collectively this group of nutrients are essential for maintaining normal energy levels, cognition, mood, bodily function, and well-being.

B Vitamins (Thiamine, Riboflavin, Niacin, B6 [Pyridoxine], Folic Acid, B12, Biotin, and Pantothenic acid)

B vitamins are a group of eight essential vitamins with several critical functions in the body. Though both molecularly and physiologically distinct, they are also deeply interrelated in their effects, synthesis, and metabolism. Among the B-complex’s many critical roles are energy (protein, carbohydrates, and fat) metabolism, supporting and maintaining the healthy function of the adrenal glands, skeletal muscle function, and digestion.

While rates of metabolism and clearance differ between each B vitamin, all B vitamins are water-soluble and are thus not stored in fat. As a result, the body simply excretes excess B vitamins in the urine and requires replenishment (from food or supplements) in order to maintain the cell functions to which B vitamins contribute. Collectively this group of vitamins are essential for maintaining normal cognition, mood, bodily function, and well-being.

Choline

Choline is an essential nutrient involved in numerous metabolic pathways, including DNA regulation and repair, protein function, and metabolism. Perhaps most importantly, the critical neurotransmitter acetylcholine is produced directly from free choline via cholinergic neurons. Acetylcholine is then responsible for a number of functions itself, most crucially as the compound which induces muscular contraction, and as the neuromodulator partially responsible for modulating risk/reward, arousal, and enhancing memory.

Choline’s essential role as a substrate for acetylcholine, and therefore brain development, is well documented in animal models. These studies demonstrate that levels of free maternal choline have a direct and fundamental impact on prenatal brain development, with the enhancements or deficits lasting into adulthood. Choline’s enhancing effect is particularly prominent in the hippocampus. In humans, the hippocampus is primarily involved in the consolidation of memory (taking short, episodic memory and translating it into long-term memory) and the learning of new information. Acetylcholine is a critical component in these processes, as mentioned above, and choline may therefore play a potential role in these processes as well by providing the substrate for acetylcholine synthesis.

Inositol

The nutrient inositol, also known as myo-inositol, was once called “vitamin B8,” however, it was later found to be produced by humans, and thus is not technically a vitamin. Inositol heightens the activity of serotonin in the brain, and thus has a vital role in mood and emotional balance. Inositol is also a type of sugar that influences the insulin response and several hormones associated with mood and cognition. It has antioxidant properties that fight the damaging effects of free radicals in the brain, circulatory system, and other body tissues.

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SKU: 635743697

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AZR2nut
Massapequa, US
★★★★★ 5
This Stuff Turned My Morning into a Rocket Launch – No Crash, Just Pure Chaos!
Flavor Name: Zero Ultra, Size: 16 Ounce (Pack of 24), Flavor Name: Zero Ultra, Size: 16 Ounce (Pack of 24)
I popped open my first can of this sparkling energy elixir expecting the usual lukewarm disappointment, but instead, it hit like a caffeinated unicorn tap-dancing on my taste buds. The flavor is ridiculously good – think tropical punch meets crisp citrus without that artificial "why did I do this" aftertaste. It's completely sugar-free, so no sneaky crash later, yet the carbonation is perfectly balanced: fizzy enough to feel exciting, but not so aggressive it turns your esophagus into a launchpad. Digestibility? Flawless. My stomach thanked me instead of staging a protest, which is a miracle for someone who once considered coffee a food group. As for effectiveness, this bad boy delivers exactly what it promises and then some. The caffeine content is spot-on potent – enough to power through a soul-crushing workday or an impromptu home renovation project without the jitters or heart palpitations that usually come with high-octane drinks. I tackled my to-do list like a caffeinated superhero, all while staying hydrated and focused. Five stars for turning a regular Tuesday into an epic quest. If you're looking for clean, bubbly motivation in a can, stop scrolling and add this to your cart immediately. Your future self will high-five you.
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Reviewed in the United States on May 13, 2026
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Veronica Martinez
Port Orchard, US
★★★★★ 5
Great taste without the sugar crash
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
I picked this up because I wanted an energy drink that wouldn’t be loaded with sugar, and this one honestly surprised me. The flavor is really light and refreshing—not too sweet or overpowering like some other energy drinks. I’ve been using it mainly in the mornings or when I need a quick boost, and it definitely helps with energy and focus without making me feel jittery. One thing I really like is that there’s no heavy aftertaste, which I’ve noticed with other sugar-free drinks. Pros: Zero sugar but still tastes good Smooth, not too strong or artificial Gives a noticeable energy boost Cons: Might be a little too mild if you like very strong flavors The price can add up if you drink them often Overall: I’d recommend this if you want a cleaner-tasting energy drink without all the sugar. It’s easy to drink and does what it’s supposed to.
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Reviewed in the United States on April 3, 2026
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haley
Alexandria, US
★★★★★ 5
Great!
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
Great price for this pack, saves money in the long run! The flavor is great and love the carbonation. The sugar free flavor is my favorite.
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Reviewed in the United States on May 28, 2026
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Timothy B. Elliott
Alexandria, US
★★★★★ 5
My go-to energy drink for years, no crashes or headaches
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
Consistent energy, good taste, and no weird side effects ✔️ Sugar-free with no crash ✔️ No headaches or jittery feeling ✔️ Clean, smooth energy boost ✔️ Good flavor without being overly sweet ✔️ Reliable enough for long-term daily use ✔️ Subscription makes it easy to keep stocked I’ve been buying Monster Zero Ultra for years and have it on subscription. It’s the one energy drink I consistently go back to. I've tried most others and they all leave me feeling weird. I actually feel a noticeable energy boost from it, but without the downsides I’ve had with other drinks. No headaches, no weird jittery feeling, and no crash later on. The flavor is also solid (this one and Ultra Violet are my go tos') , not overly sweet, and easy to drink regularly. I only buy sugar-free energy drinks, and this checks that box without sacrificing taste. I limit myself to one a day after the gym and water the rest of the day. After trying a lot of different brands, this is the one that’s stayed consistent for me, which is why I’ve kept it on subscription.
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Reviewed in the United States on April 5, 2026
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Laurin
Fort Morgan, US
★★★★★ 5
Monster
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
Great price. Cheaper than the store. Zero sugar is a game changer!
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Reviewed in the United States on May 15, 2026

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