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Mag18 | Peptide-Powered Daily Magnesium
As low as $1.63/Serving
90 Tablets · 30 Servings
A peptide-powered magnesium complex that calms your nervous system and deepens sleep.
- Supports over 300 critical enzymatic reactions in the body
- Peptide-bound magnesium for enhanced cellular absorption
- Promotes nervous system balance and hormone health
- Supports deep, restful recovery overnight
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"Mag18 combines 18 forms of peptide-bound magnesium with D3 and K2 to support deep sleep, nervous system balance, and long-term bone health, all in one daily tablet."
Dr. Will Cole, MD
Founder, Longevity Rx | Functional Medicine Expert
Other
Magnesium Glycinate
Supports deep, restorative sleep without digestive.
Magnesium Threonate
Crosses into the brain to support focus and nervous system.
Vitamin D3
Supports healthy blood sugar,
digestion, and cellular defense.
Vitamin K2
Ensures minerals are used where your body needs them most.
Zinc
Supports immune health and hormone regulation
After 30 Days of Mag18:
81% slept more soundly and woke up refreshed.
77% experienced better muscle recovery and reduced soreness.
75% felt calmer and less stressed.
*Based on a survey of 235 Longevity Rx members after 30 days.
What to Expect Over Time
7 Days
Falling asleep more easily,
less tension in the evening.
2 Weeks
Deeper, more restorative sleep, steadier mood.
1 Month
Fewer muscle cramps,
stronger stress resilience.
3 Months+
Long-term sleep quality and bone density that compounds.
Key Features
How to Use
Ingredients
Certifications & Testing
Quality Control
Mag18 | Peptide-Powered Daily Magnesium
NO GLUTEN
NO ARTIFICIAL ADDITIVES
NO GMOS
NSF SAFE
NO FILLERS
NO SUGAR
CLINICALLY STUDIED INGREDIENTS
What to Expect With Consistent Mag18 Use
*Results may vary. Benefits reported with consistent daily use.
*Results may vary. Benefits reported with consistent daily use.
7 Days
Feel the First Shift*
- Falling asleep more easily
- A noticeable sense of calm in the evening
- Fewer restless nights
- Falling asleep more easily
- A noticeable sense of calm in the evening
- Fewer restless nights
2 Weeks
Your Body Starts Responding*
- Deeper, more restorative sleep
- Less tension and muscle tightness
- Steadier mood throughout the day
- Deeper, more restorative sleep
- Less tension and muscle tightness
- Steadier mood throughout the day
1 Month
Deeper Cellular Support Kicks In*
- Fewer muscle cramps and restless legs
- Stronger stress resilience day to day
- Greater calm and consistency
- Fewer muscle cramps and restless legs
- Stronger stress resilience day to day
- Greater calm and consistency
3 Months +
Long-Term Health & Vitality*
- Consistent, deep sleep you can rely on
- Better stress resilience and recovery
- Stronger bones, supported by D3 and K2
- Consistent, deep sleep you can rely on
- Better stress resilience and recovery
- Stronger bones, supported by D3 and K2
Your body is changing. Here is what Mag18 does about it.
When It Starts (40-49)
Most common starting decadeThe right time to start
Most common starting decade
What's Happening in Your Body:
- Sleep feels lighter and less
restorative than it used to - Stress lingers longer and is
harder to shake off - Occasional muscle cramps or
restless legs show up - Recovery after exercise or
stress takes longer
- Sleep feels lighter
- Stress harder to shake
- Cramps more frequent
- Bone density quietly drops
What MAG18 does:
- Deepens sleep quality so you wake up actually rested
- Calms the nervous system to
ease daily stress - Reduces muscle cramps and restless leg discomfort
- Speeds recovery after physical or mental stress
- Deepens sleep quality
- Calms your nervous system
- Reduces cramps & discomfort
- Speeds recovery
When It Compounds (50-59)
Sleep and stress resilience take real work
Peak impact decade
What's Happening in Your Body:
- Sleep quality declines even with a full night in bed
- Stress and anxiety feel harder to
shake off - Muscle cramps and restless legs become more frequent
- Bone density starts quietly
declining
- Sleep declines despite rest
- Stress harder to shake
- Cramps more frequent
- Bone density quietly drops
What MAG18 does:
- Deepens sleep quality so you actually wake up rested
- Calms the nervous system to
ease daily stress - Reduces muscle cramps and restless leg discomfort
- Supports bone density with D3 and K2 working together
- Restores deep sleep
- Calms your nervous system
- Reduces cramps & discomfort
- Supports bones with D3 & K2
When It Matters Most (60+)
Protecting what you have and rebuilding what you have lost
Deepest cellular support
What's Happening in Your Body:
- Sleep becomes lighter
and less restorative - Stress resilience weakens
with age - Bone and muscle strength
decline faster - Recovery from everyday activity
takes longer
- Sleep is lighter, less restorative
- Stress resilience weakens
- Bone & muscle strength decline
- Recovery takes longer
What MAG18 does:
- Restores hydration at the
cellular level - Supports memory, focus,
and mental clarity - Provides electrolytes your
body needs every day - Helps maintain long-term
vitality and resilience
- Restores deep sleep
- Strengthens resilience
- Supports bones & muscle
- Speeds daily recovery
One bottle replaces four supplements.
Typical Monthly Cost (Bought Separately)
Magnesium Glycinate(Sleep Support)
Vitamin D3 + K2 Complex
Zinc & Trace Minerals
Stress & Nervous System Support
Total Typical Cost
$130+
/Month
$69.95
$48.97
Subscribe & Save 30%
Based on average market prices of comparable supplements
Game Changing Results *
Mag18 supports deep sleep and nervous system balance to help members feel calmer, more rested, and recovered with consistent use.
0%
slept more soundly and woke up refreshed
0%
experienced better muscle recovery and reduced soreness
0%
felt calmer and less stressed
Ingredients clinically studied for sleep and recovery.
Every ingredient is chosen for absorption, not label appeal. No fillers. No artificial sweeteners. Just what your cells actually need.
Magnesium
18 forms of magnesium bound
to amino acids for superior absorption, delivering what your body needs, where it needs it.
Vitamin D3
Essential for calcium absorption, hormone balance, and immune resilience, especially when paired with K2.
Vitamin K2
A crucial partner to vitamin D,
K2 ensures minerals are used where your body needs them most.
Zinc
Essential for immune health, hormone regulation, and healthy skin, balanced to work in harmony with copper.
Frequently Asked Questions
What makes Mag18 different from other supplements?
Mag18 is more than just magnesium—it’s a full-body balance formula combining highly bioavailable whole-food magnesium chelate with vitamins D3 and K2, plus superfoods like spirulina and beet root. This synergistic blend supports your bones, muscles, mood, heart, and immune system–making Mag18 a daily essential
What are some of the benefits of taking Mag18?
It’s a foundational supplement for feeling calm, strong, and centered every day. With daily use, Mag18:
- Strengthens bones by enhancing calcium absorption and directing it where it belongs
- Supports muscle recovery and relaxation
- Improves sleep quality and stress resilience
- Enhances cardiovascular health and proper blood flow
- Boosts mood and mental clarity through neurotransmitter regulation
How should I take Mag18?
Take Mag18 once daily with food, preferably in the evening if you’re using it to support sleep and relaxation. It’s easy to add to your daily wellness routine and plays well with other Longevity Rx products.
Where and how should I store Mag18?
Store Mag18 in a cool, dry place, away from heat and direct sunlight. Keep the container sealed between uses to preserve freshness and potency.
Who should take Mag18?
Anyone experiencing stress, poor sleep, muscle cramps, or signs of magnesium deficiency (like irritability or low energy) can benefit.Mag18 is also ideal for those looking to support bone strength, heart health, and stress resilience at any age.
What measures do you take to ensure the quality of Mag18?
Mag18 is crafted in a GMP-certified facility and undergoes third-party testing for purity, potency, and quality. We use clean, bioavailable forms of magnesium, D3, and K2—with no artificial additives or unnecessary fillers—so you get exactly what your body needs, and nothing it doesn’t.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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