The Science Behind Zaka

Why most supplements may not yield results.

The supplement formula that you can expect from us comes down to three things: the form, the dose, and the stack.

Our formulation philosophy

Four things that separate Zaka from over-the-counter supplements

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Form matters as much as the ingredient

Magnesium Oxide has ~4% absorption. Magnesium Glycinate has ~50%. The same "magnesium" on the label can potentially mean a 10ร— difference in what your body actually receives.

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Dose is everything

Most multivitamins dose at 10โ€“30% of recommended levels, potentially not enough to move the needle.

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Nutrients compete and synergise

Calcium and zinc compete for absorption. Vitamin D3 without K2 can calcify arteries. Vitamin C regenerates Vitamin E. Building a stack requires an understanding of these interactions.

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Foundation before targets

A collagen supplement working in a micronutrient-deficient system usually operates at 20โ€“30% efficiency. ZakaCore can potentially fill these gaps.

Clinical ingredient summary

8 ingredients. One system.

Every ingredient in Zaka's core range is informed by published ingredient research.

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Magnesium Glycinate

The master mineral

  • Supports 300+ enzymatic reactions
  • May promote deep sleep via GABA activation
  • May reduce cortisol and adrenal fatigue
  • May be critical for ATP (energy) synthesis
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Methylated B-Complex

Cellular energy cofactor

  • May convert food into usable ATP fuel
  • Supports nervous system and cognition
  • May promote active methyl forms cross the blood-brain barrier
  • Can be essential for red blood cell production
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Vitamin D3 + K2

The hormone vitamin

  • May regulate gene expression in 2,000+ genes
  • Supports immune system response
  • Can direct calcium to bones, not arteries (K2)
  • Is commonly linked to mood, sleep, and cardiovascular health
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Zinc Bisglycinate

Immune and skin architect

  • A potential cofactor in 200+ enzyme reactions
  • Can be critical for collagen remodelling
  • Supports testosterone and insulin regulation
  • Commonly linked to skin healing and hair strength
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Vitamin C (High-Dose)

Collagen synthesiser

  • Supports collagen growth
  • Supports Vitamin E regeneration (antioxidant synergy)
  • May potentially neutralise free radicals that degrade skin
  • Supports immune response under stress
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Omega-3 EPA/DHA

Heart and brain protector

  • Can potentially reduce systemic inflammation at 2g+ daily
  • Structural component of brain cell membranes
  • Supports endothelial (arterial wall) function
  • Commonly linked to improved cognitive speed and mood
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L-Theanine

Calm focus activator

  • Can promote alpha brain wave activity (relaxed alertness)
  • May raise GABA, serotonin, and dopamine levels
  • Can potentially improve sleep quality without morning grogginess
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Lutein + Zeaxanthin

Macular shield

  • Accumulates specifically in the retina and lens
  • Can help with filtering high-energy blue and UV light
  • Typical defence against age-related macular degeneration
  • Supports brain function (same carotenoids in neural tissue)

Deep dive by goal

The science behind your stack

Energy and Focus

Why your energy crashes

Caffeine usually masks fatigue. Zaka Energy Stack can potentially address nutritional deficiencies. Sustained energy requires B-vitamins for metabolic fuel, Magnesium for mitochondrial function, and adaptogens for stress resilience.

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Key nutrients โ€” tap to expand

Ready to start the Energy and Focus stack?

Take the 60-second quiz and get your full personalised recommendation.

What Zaka customers are saying

Reviews from South Africans who started with their Foundation Stack and kept going.

"I was surviving on 3 coffees a day just to get through work. By week 3 on the Energy Stack I was waking up actually awake. My afternoon crashes are completely gone."

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Lerato M.

Johannesburg ยท 3 months on Energy Stack
Energy Stack

"My skin has been a battle for years. After 6 weeks on Glow + Core, the texture has genuinely changed. My aesthetician even asked what I started doing differently."

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Taryn P.

Cape Town ยท 6 weeks on Beauty Stack
Beauty Stack

"I'm 52 and my joints were starting to feel it. The Omega + Core combo has made a real difference โ€” I'm training again 4 days a week without the stiffness."

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Jacques V.

Pretoria ยท 5 months on Longevity Stack
Longevity Stack

"I've tried every sleep "hack" you can imagine. The Zaka Sleep + Core combo is the first thing that's worked without making me feel groggy the next morning. I sleep deeply and wake up clear-headed."

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Nadia A.

Durban ยท 2 months on Sleep Stack
Sleep Stack

"As a personal trainer I'm on my feet 10+ hours. Revive has been a game changer for recovery. I used to dread Mondays โ€” now it's just another day."

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Sipho K.

Soweto ยท 10 weeks on Energy Stack
Energy Stack

"Hair growth was my main goal. The difference after 4 months is visible โ€” my stylist confirmed it's not just in my head. The nails are a bonus I didn't expect."

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Michelle B.

Stellenbosch ยท 4 months on Beauty Stack
Beauty Stack

4.8 / 5

Average rating

94%

Would recommend

3.2 weeks

Avg. time to results

These statements have not been evaluated by the South African Health Products Regulatory Authority (SAHPRA). These products are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. Always consult a healthcare professional before starting any supplement regimen.