Best Multivitamin for Mounjaro, Ozempic and Wegovy Users

Taking Mounjaro®, Ozempic® or Wegovy® does not automatically mean you need a multivitamin.

But when appetite drops, meals often become smaller, less varied and easier to skip. Over time, that can make it harder to get enough iron, B vitamins, vitamin D, magnesium, zinc and other essential nutrients consistently.

A good multivitamin can provide a useful nutritional safety net—particularly if your food intake has reduced significantly or you are relying on the same few meals each day.

Quick Answer: What Is the Best Multivitamin for GLP-1 Users?

Look for a formula that provides:

• Broad vitamin and mineral coverage.

• Sensible doses rather than extreme megadoses.

• Well-tolerated nutrient forms.

• Clear quantities for every ingredient.

• An iron level suited to your age, diet and medical history.

• A format you can take consistently without worsening nausea.

It should support your diet—not try to replace protein, fibre, hydration or adequate food.

Our Pharmacist-Formulated Choice

Our preferred comprehensive option is TRINITY Multi-Nutrients by Arbor Vitamins.

TRINITY provides broad nutritional coverage across three smaller capsules taken in the Morning, Day and Night.

The formula includes:

• Iron bisglycinate paired with vitamin C.

• Vitamin D3 and K2.

• Methylfolate and methylcobalamin.

• Magnesium malate and bisglycinate.

• Zinc, selenium, iodine and copper.

• Vitamins A, C and E.

• A broad B-vitamin complex.

Rather than compressing everything into one large tablet, TRINITY separates selected nutrients across the day. Iron is kept apart from the calcium-containing Day formula, while magnesium is included in both Morning and Night forms.

It also contains no magnesium stearate, maltodextrin or microcrystalline cellulose.

Why It May Suit Mounjaro, Ozempic or Wegovy Users

TRINITY may be particularly useful if:

• Your meals have become consistently smaller.

• Your diet is less varied than it used to be.

• You frequently skip meals.

• You want broad cover without buying several separate supplements.

• You prefer capsules to gummies or a large one-a-day tablet.

TRINITY was not created as a gimmicky “GLP-1 support” product. It is a comprehensive daily multivitamin designed to provide reliable nutritional coverage when diet alone is not always enough.

Shop TRINITY Multi-Nutrients

Do Mounjaro and Ozempic Cause Vitamin Deficiencies?

Not directly.

GLP-1 medicines do not automatically strip vitamins and minerals from the body. The risk comes from eating less—particularly when smaller meals, nausea or changing food preferences reduce the amount and variety of food you consume.

Nutritional gaps are more likely if you:

• Regularly skip meals.

• Eat only a small range of foods.

• Consume very little meat, fish, dairy or fortified alternatives.

• Follow a vegan or restricted diet.

• Experience persistent vomiting or diarrhoea.

• Lose weight rapidly over several months.

• Already had low iron, vitamin B12 or vitamin D.

Which Nutrients Matter Most?

A comprehensive multivitamin can help cover several of these nutrients at once, making it simpler than buying numerous individual products.

That does not mean everyone needs every nutrient in high doses. The aim is broad, sensible coverage, not megadosing.

When Is a Multivitamin Most Useful?

A multivitamin may be worth considering when:

• Your appetite has remained low for several weeks.

• Meals have become consistently smaller or repetitive.

• You are struggling to eat a balanced diet.

• Several major food groups have disappeared from your routine.

• You want one straightforward nutritional safety net.

It is less likely to add much when you continue to eat a varied, nutrient-dense diet and have no particular risk factors.

Persistent fatigue, breathlessness, pronounced weakness, pins and needles or significant hair shedding should not simply be treated by adding more supplements. These symptoms may justify blood tests for iron, vitamin B12, folate, vitamin D or another underlying cause.

A multivitamin can support everyday intake. A confirmed deficiency may require a separate treatment dose recommended by a healthcare professional.

Why TRINITY Fits

TRINITY provides broad micronutrient coverage in one daily system, including nutrients commonly reduced when food variety falls.

It is designed to make comprehensive supplementation straightforward—without requiring a complicated collection of separate bottles.

What Makes TRINITY Different?

Many multivitamins compress everything into one tablet. TRINITY divides the daily formula into three smaller capsules:

Morning

• Iron bisglycinate paired with vitamin C.

• Folate and a broad B-vitamin complex.

• Magnesium malate.

• Turmeric and black pepper.

Day

• Vitamin D3 and vitamin K2.

• Calcium, iodine, chromium and copper.

• Vitamins B6 and B12.

• Lutein and zeaxanthin.

Night

• Magnesium bisglycinate.

• Zinc and selenium.

• Vitamin E and beta-carotene.

• Manganese and molybdenum.

This approach allows TRINITY to provide broad coverage without creating one oversized tablet. It also keeps the iron-containing Morning capsule separate from the calcium-containing Day capsule.

TRINITY Compared With Other Options

TRINITY focuses on vitamins and minerals rather than adding stimulant blends, laxative herbs or further appetite suppressants.

Does TRINITY Contain Iron?

Yes. TRINITY provides 14 mg of iron as iron bisglycinate.

This may be particularly useful for people who:

• Have periods.

• Experience heavy menstrual bleeding.

• Eat little meat or iron-rich food.

• Follow a vegetarian or vegan diet.

• Have previously had low iron levels.

However, an iron-containing multivitamin will not suit everyone.

Check with a pharmacist or doctor before taking TRINITY if you:

• Have haemochromatosis or another iron-overload condition.

• Have been advised to avoid iron.

• Already take a separate iron supplement.

• Take warfarin.

• Have significant thyroid or kidney disease.

• Are pregnant, breastfeeding or trying to conceive.

• Are receiving treatment for a confirmed deficiency.

A multivitamin dose may help maintain everyday intake, but it is not a replacement for prescribed treatment where blood tests confirm iron-deficiency anaemia or another deficiency.

A Simpler Alternative to a Supplement Stack

You do not need six different bottles simply because you take Mounjaro, Ozempic or Wegovy.

For someone eating smaller or less varied meals, TRINITY provides a straightforward way to cover a broad range of vitamins and minerals in one daily system.

Explore TRINITY Multi-Nutrients

How to Take TRINITY With Mounjaro, Ozempic or Wegovy

For injectable Mounjaro, Ozempic or Wegovy, TRINITY can usually be taken on the same day as your injection. There is no standard need to separate the two by a set number of hours.

Take each capsule with food:

• Morning and Day (slow release): with breakfast or your first proper meal.

• Night: with your evening meal.

Taking the capsules with food may improve tolerance, particularly if you are already experiencing nausea or reduced appetite.

On days when your appetite is particularly low, take TRINITY with the meal you tolerate best rather than forcing it down on an empty stomach.

Some oral medicines need to be separated from minerals such as iron, calcium or magnesium. Check with a pharmacist if you take levothyroxine, certain antibiotics, bisphosphonates or other regular medicines.

What TRINITY Can—and Cannot—Do

TRINITY can help provide broad vitamin and mineral coverage when your meals are smaller or less varied.

It cannot replace:

• Protein needed to support muscle.

• Fibre and fluid.

• Adequate calories.

• A varied diet.

• Treatment for a diagnosed deficiency.

• Medical review of persistent side effects.

Think of it as a nutritional safety net—not a substitute for food.

Who Is TRINITY Best Suited To?

TRINITY may be a strong option if you:

• Want comprehensive daily coverage.

• Are eating less variety since starting treatment.

• Prefer one coordinated system to multiple bottles.

• Want an iron-containing multivitamin.

• Value transparent doses and carefully selected nutrient forms.

• Want a formula without magnesium stearate, maltodextrin or microcrystalline cellulose.

It may not suit people who do not need iron, take warfarin or require a pregnancy-specific supplement.

Pharmacist’s Verdict

You do not need a product simply because it says “GLP-1 support” on the label.

But when appetite suppression has made your diet smaller, repetitive or difficult to maintain, a comprehensive multivitamin can provide valuable backup.

TRINITY is our preferred option because it delivers broad vitamin and mineral coverage across three smaller daily capsules—without requiring an expensive, complicated supplement stack.

Shop TRINITY Multi-Nutrients

Frequently Asked Questions

What is the best multivitamin to take with Mounjaro?

Choose a comprehensive formula with sensible doses, clearly stated ingredients and an iron content suited to your individual needs.

TRINITY is our preferred option for people who want broad vitamin and mineral coverage across three smaller daily capsules.

What is the best multivitamin for women taking Mounjaro or Ozempic?

Women who have periods, eat little meat or have previously had low iron may benefit from a multivitamin containing iron.

TRINITY provides 14 mg of iron as iron bisglycinate alongside vitamin C. Women who do not need iron may be better suited to an iron-free formula.

Do Mounjaro, Ozempic or Wegovy deplete vitamins?

They are not known to directly strip vitamins from the body.

The main concern is that reduced appetite, smaller meals and digestive side effects can make it harder to consume enough nutrients consistently.

Can a multivitamin help with tiredness on Mounjaro?

It may help when tiredness is linked to reduced dietary intake or a nutritional gap.

However, fatigue can also result from eating too few calories, dehydration, rapid weight loss, poor sleep or an underlying medical issue. Persistent symptoms should be investigated rather than managed with supplements alone.

Can vitamins prevent hair loss on Ozempic or Mounjaro?

Not reliably.

Rapid weight loss, low calorie intake, inadequate protein, low iron stores and other factors can contribute to hair shedding. A multivitamin may support general intake, but it will not automatically prevent weight-loss-related hair loss.

Can I take TRINITY on injection day?

Yes, in most cases TRINITY can be taken on the same day as injectable Mounjaro, Ozempic or Wegovy.

Take the capsules with food at the times shown on the label. There is no standard requirement to separate them from the injection by a set number of hours.

Is a three-part multivitamin better than a one-a-day?

Not automatically, but dividing the formula allows TRINITY to provide broad coverage in three smaller capsules and separate selected nutrients such as iron and calcium.

The best format is ultimately one that suits your needs and that you can take consistently.

Key Takeaways

• GLP-1 medicines do not automatically cause vitamin deficiencies.

• Reduced appetite and smaller meals can make nutritional gaps more likely.

• A multivitamin may be useful when your diet has become consistently limited or repetitive.

• TRINITY provides broad vitamin and mineral coverage across Morning, Day and Night capsules.

• It contains iron, so it will not be the right choice for everyone.

• A multivitamin cannot replace protein, fibre, hydration or adequate food.

Final Thoughts

You do not need an elaborate collection of supplements simply because you take Mounjaro, Ozempic or Wegovy.

But when eating less has made it difficult to maintain a varied diet, a comprehensive multivitamin can provide a simple and practical nutritional safety net.

TRINITY combines broad micronutrient coverage, transparent doses and carefully selected nutrient forms in three smaller daily capsules—without stimulant blends, appetite suppressants or unnecessary fillers.

Shop TRINITY Multi-Nutrients

Related Guides

• Best Supplements to Take With Mounjaro, Ozempic or Wegovy

• Can You Take Supplements With GLP-1 Medications?

• Can Ozempic or Mounjaro Cause Anaemia?

• Hair Loss on Mounjaro, Ozempic or Wegovy

• How to Maintain Energy on Mounjaro or Ozempic

References

1. Mozaffarian D, Agarwal M, Aggarwal M, et al. Nutritional priorities to support GLP-1 therapy for obesity: a joint advisory from the American College of Lifestyle Medicine, American Society for Nutrition, Obesity Medicine Association and The Obesity Society. Obesity. 2025.

2. Electronic Medicines Compendium. Mounjaro: Summary of Product Characteristics.

3. Electronic Medicines Compendium. Wegovy: Summary of Product Characteristics.

4. NHS. Vitamins and minerals.

5. National Institute for Health and Care Excellence. Vitamin B12 deficiency in over 16s: diagnosis and management. NICE guideline NG239.

About the Author

Written by Jon Wright, Clinical Pharmacist and Co-Founder of Arbor Vitamins.

Jon writes evidence-led guidance on medicines, supplements and nutrient interactions, helping readers make informed choices without relying on exaggerated health claims.

Last reviewed: July 2026

Medical Disclaimer

This article is for general information only and does not replace personalised advice from your doctor, pharmacist or dietitian.

Do not stop or change Mounjaro, Ozempic, Wegovy or another prescribed medicine without speaking to your prescriber.

Seek medical advice if you experience persistent vomiting or diarrhoea, severe abdominal pain, signs of dehydration, pronounced weakness or food intake that has become extremely restricted.

Food supplements should not replace a varied diet or healthy lifestyle.