If you’re taking a GLP-1 medication like Mounjaro, Ozempic, Wegovy, Zepbound, Saxenda, or Rybelsus, you’ve likely noticed big changes — not just in appetite, but in energy, digestion, hair, and recovery.
One of the biggest mistakes people make on GLP-1s is taking the wrong vitamins at the wrong time — or not taking them at all.
This guide covers:
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The best vitamins to take on GLP-1 medications
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The most common nutrient deficiencies
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Why timing matters more than ever on GLP-1s
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And why a timed, bioavailable multivitamin like TRINITY Multi-Nutrients is ideal during GLP-1 treatment
🔍 Why Vitamin Support Is So Important on GLP-1 Medications
GLP-1 medications work by:
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Reducing appetite
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Slowing digestion (gastric emptying)
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Lowering total calorie intake
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Accelerating weight loss
While this is effective for fat loss, it also means:
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You eat less food
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You absorb fewer nutrients
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Nutrient competition matters more
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Deficiencies develop more easily
That’s why what you take — and when you take it — matters more than ever.
⚠️ Common Deficiencies on GLP-1 Medications
People on GLP-1s are most at risk of low levels of:
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Iron
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Vitamin B12
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Vitamin B6
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Folate
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Vitamin D
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Magnesium
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Zinc
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Selenium
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Biotin
These deficiencies are strongly linked to:
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Fatigue
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Hair thinning
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Brain fog
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Poor sleep
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Muscle weakness
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Low mood
⏰ The Best Vitamins to Take on GLP-1s (By Time of Day)
🌅 Morning — Energy, Iron & Brain Support
Morning is best for energising nutrients and iron absorption.
Best vitamins in the morning:
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Iron (paired with vitamin C)
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Vitamin C
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B-complex (B1, B2, B5, B6, B12)
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Folate
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Biotin
Why:
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Iron absorbs best early in the day
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B vitamins support energy and cognition
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Vitamin C enhances iron uptake
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Taking these later can interfere with sleep
TRINITY places these nutrients in the Morning Formula to support energy without conflict.
☀️ Daytime — Fat-Soluble Vitamins & Bone Support
Some vitamins require food and fat to absorb properly.
Best vitamins during the day:
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Vitamin D3
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Vitamin K2
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Calcium
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Iodine
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Lutein & zeaxanthin
Why:
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Fat-soluble vitamins absorb best with meals
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Calcium should be kept away from iron
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Daytime digestion is strongest
TRINITY includes these in the Day Formula, designed to be taken with food.
🌙 Night — Sleep, Recovery & Hair Support
Evening is best for calming minerals and repair nutrients.
Best vitamins at night:
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Magnesium (especially glycinate)
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Zinc
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Selenium
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Vitamin E
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Vitamin B3 (nicotinamide)
Why:
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Magnesium supports relaxation and sleep
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Zinc and selenium support repair and hair health
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These minerals interfere with iron if taken together
TRINITY places these in the Night Formula, away from iron and calcium.
❌ Why Most Multivitamins Don’t Work Well on GLP-1s
Most standard multivitamins:
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Combine iron + calcium
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Combine magnesium + iron
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Ignore nutrient timing
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Use low-absorption forms
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Contain fillers and bulking agents
On GLP-1 medications, digestion and absorption are already reduced — so these mistakes matter even more.
✅ Why TRINITY Is Ideal for GLP-1 Users
TRINITY Multi-Nutrients was designed around:
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Nutrient compatibility
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Bioavailability
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Time-of-day optimisation
🌅 Morning Formula
Iron + vitamin C, full B-complex, folate, biotin
→ Energy, focus, iron absorption
☀️ Day Formula
Vitamin D3 + K2, calcium, iodine, B6, B12
→ Bone, immune, thyroid and cognitive support
🌙 Night Formula
Magnesium glycinate, zinc, selenium, vitamin E
→ Sleep, recovery, hair and nervous system support
This approach:
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Prevents nutrient competition
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Improves real-world absorption
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Supports energy without overstimulation
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Protects hair, sleep, and recovery during weight loss
Explore TRINITY Multi-Nutrients
🧠 Summary
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GLP-1 medications increase the risk of nutrient deficiencies
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Timing vitamins correctly is critical for absorption
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Iron and B vitamins are best in the morning
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Fat-soluble vitamins are best during the day
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Magnesium, zinc, and selenium are best at night
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A timed, bioavailable multivitamin like TRINITY simplifies everything
⭐ FAQs
Q: Should I take a multivitamin on GLP-1 medications?
Yes — reduced appetite and slower digestion increase deficiency risk.
Q: What vitamins help most on Mounjaro or Ozempic?
Iron, B vitamins, magnesium, zinc, vitamin D, selenium, and biotin.
Q: Why does timing matter more on GLP-1s?
Because absorption is reduced and nutrient competition has a bigger impact.
Q: Can I take all my vitamins at once?
It’s not recommended — many nutrients block each other.
Q: Why is TRINITY good for GLP-1 users?
It separates nutrients by time of day to improve absorption and reduce side effects.
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