Best Supplements for GLP-1 Users: Supporting Nutrition During Weight Loss

Key Takeaways

• GLP-1 medications reduce appetite, which may lower overall nutrient intake.
• Prioritise protein to help maintain lean muscle during weight loss.
• Fibre supports digestive health and bowel regularity, especially when food intake decreases.
• Magnesium, vitamin D, and calcium help support muscle, nerve, and bone health.
• Omega-3 fatty acids support heart health and overall wellbeing.
• Choose high-quality, evidence-based supplements that complement, rather than replace, a healthy diet.
• Not everyone taking GLP-1 medications needs supplements. Supplementation should be based on individual needs and discussed with a healthcare provider.

GLP-1 medications can be an effective option for managing type 2 diabetes and supporting chronic weight management. By reducing appetite and increasing feelings of fullness, they often lead to lower calorie intake and gradual weight loss.

While eating less can support weight management, it may also make it more challenging to get enough protein, vitamins, minerals, and other essential nutrients from food alone.

A balanced diet should always come first. However, certain supplements may help support your nutritional intake and overall health while taking GLP-1 medications, particularly if you're eating smaller meals or have specific nutrient needs.

In this guide, you'll learn:

• Which supplements may help support GLP-1 users

• Why each nutrient matters

• Food sources to prioritise

• How to choose high-quality supplements

• When supplementation may be appropriate
  
  

At a Glance: Best Supplements for GLP-1 Users

Why Nutrition Matters While Taking GLP-1 Medications

GLP-1 medications reduce appetite, helping many people naturally eat fewer calories. While this can support weight loss, smaller meals may also provide fewer essential nutrients if they're not carefully planned.

Rather than simply eating less, the goal is to eat more nutrient-dense foods that provide enough protein, healthy fats, fibre, vitamins, and minerals to support your body's daily needs.

Healthcare professionals generally recommend a food-first approach, using supplements only when dietary intake isn't enough or when individual nutrient needs can't be met through food alone.

Many people taking GLP-1 medications can meet their nutritional requirements with a balanced eating pattern. However, supplements may be helpful for those with reduced food intake, diagnosed nutrient deficiencies, or increased nutritional needs.

Why Protein Is One of the Most Important Nutrients for GLP-1 Users

Protein should be one of the top nutritional priorities while taking GLP-1 medications.

Because these medications often reduce appetite, many people naturally eat smaller meals. If protein intake becomes too low, weight loss may include the loss of lean muscle as well as body fat.

Maintaining lean muscle is important for:

• supporting strength and mobility

• maintaining physical function

• supporting healthy metabolism

• promoting healthy ageing
  
  

Good dietary sources of protein include:

• lean chicken and turkey

• fish and seafood

• eggs

• Greek yoghurt and cottage cheese

• tofu and tempeh

• beans and lentils
  
  

If it's difficult to meet your protein needs through food alone, a protein supplement may help increase your daily intake. Protein powders and ready-to-drink shakes can be practical options, particularly when appetite is low.

Related reading: GLP-1 Muscle Loss: Why It Happens and How to Support Healthy Muscle During Weight Loss

Why Fibre Matters While Taking GLP-1 Medications

Fibre plays an important role in digestive health and is often overlooked during weight loss.

As portion sizes become smaller, overall fibre intake may decrease, especially if meals contain fewer fruits, vegetables, legumes, and whole grains.

Eating enough fibre may help support:

• healthy digestion

• regular bowel movements

• gut health

• healthy blood sugar regulation as part of a balanced diet
  
  

Excellent food sources include:

• vegetables

• fruit

• oats

• barley

• legumes

• chia seeds

• flaxseeds
  
  

If your fibre intake is low, increase it gradually and drink plenty of water to help minimise digestive discomfort.

For some people, a fibre supplement may be beneficial when dietary intake alone isn't enough, but whole foods should remain the primary source whenever possible.

Can Magnesium Help Support GLP-1 Users?

Magnesium is an essential mineral involved in more than 300 enzymatic reactions throughout the body.

It contributes to:

• normal muscle function

• normal nervous system function

• electrolyte balance

• normal energy-yielding metabolism

• the maintenance of normal bones
  
  

Although GLP-1 medications don't directly reduce magnesium levels, eating less may make it harder for some people to consume enough magnesium-rich foods consistently.

Foods naturally rich in magnesium include:

• spinach

• pumpkin seeds

• almonds

• cashews

• black beans

• whole grains
  
  

If supplementation is appropriate, choosing a highly bioavailable form may improve absorption and digestive tolerance. Albion® Magnesium Bisglycinate is a patented chelated form of magnesium designed to provide consistent absorption while being gentle on the stomach.

Related reading: Albion® Magnesium Bisglycinate: Best Magnesium for Sleep, Stress, and Bioavailability

Why Vitamin D and Calcium Matter During Weight Loss

Vitamin D and calcium work together to help maintain normal bone health.

During weight loss, maintaining bone health remains important, particularly for older adults and postmenopausal women who may already have a higher risk of reduced bone density.

Calcium contributes to the maintenance of normal bones, while vitamin D supports the normal absorption and utilisation of calcium.

Good dietary sources include:

Calcium

• milk, yoghurt, and cheese

• calcium-fortified plant-based drinks

• tofu made with calcium

• sardines with bones

• leafy green vegetables
  
  

Vitamin D

• salmon

• mackerel

• sardines

• egg yolks

• fortified foods
  
  

Vitamin D can also be produced through sun exposure, although many Canadians may not get enough throughout the year due to seasonal changes and limited sunlight.

If blood tests identify low vitamin D levels or dietary calcium intake is inadequate, your healthcare provider may recommend supplementation.

Related reading: Vitamin K2+D3: The Perfect Pair for Stronger Bones and Better Health

Are Omega-3 Fatty Acids Worth Considering?

Omega-3 fatty acids are healthy fats that support overall wellbeing and are an important part of a balanced diet.

They contribute to normal heart function and play a role in maintaining overall health. Including omega-3-rich foods may also help improve the nutritional quality of your diet while eating smaller portions.

Excellent food sources include:

• salmon

• sardines

• mackerel

• trout

• walnuts

• chia seeds

• flaxseeds
  
  

If you don't regularly eat oily fish, an omega-3 supplement may be a practical way to increase your intake. As with any supplement, choose a high-quality product and follow your healthcare provider's recommendations.

How to Choose a High-Quality Supplement

Not all supplements are made to the same standards. Choosing high-quality products can help ensure you're getting the ingredients listed on the label in appropriate forms and amounts.

When comparing supplements, look for products that:

• use evidence-based ingredients

• clearly list ingredient forms and dosages

• avoid unnecessary fillers where possible

• are manufactured according to recognised quality standards

• provide transparent labelling
  
  

For certain nutrients, the form of the ingredient also matters. For example, well-absorbed forms such as Albion® Magnesium Bisglycinate may offer better gastrointestinal tolerance than some other magnesium forms.

Quality supplements should complement a balanced diet and healthy lifestyle, not replace them.

Do You Need Supplements While Taking GLP-1 Medications?

Not everyone taking GLP-1 medications needs supplements.

Many people can meet their nutritional needs by eating a varied diet that includes adequate protein, vegetables, fruit, whole grains, healthy fats, and calcium-rich foods.

However, supplementation may be worth discussing with your healthcare provider if you:

• regularly eat very small meals

• have a diagnosed nutrient deficiency

• follow a restrictive dietary pattern

• have increased nutritional needs based on your age or health status
  
  

The best approach is an individualised one. Your healthcare provider or registered dietitian can help determine whether supplementation is appropriate based on your diet, medical history, and, where necessary, blood test results.

Frequently Asked Questions

What are the best supplements for GLP-1 users?

There isn't a single supplement that's right for everyone. Depending on your diet and individual nutritional needs, protein, fibre, magnesium, vitamin D, calcium, and omega-3 fatty acids may help support overall health while taking GLP-1 medications.

Should I take vitamins while using GLP-1 medications?

Not necessarily. Many people can meet their vitamin and mineral needs through a balanced diet. However, if you're consistently eating less or have a diagnosed nutrient deficiency, your healthcare provider may recommend supplementation.

Is protein important while taking GLP-1 medications?

Yes. Protein helps support the maintenance of lean muscle during weight loss and contributes to normal muscle maintenance. Including a source of protein with each meal can help support your daily intake.

Can I take magnesium with GLP-1 medications?

Magnesium supplements can generally be taken alongside GLP-1 medications, but they may not be appropriate for everyone. If you're considering supplementation, speak with your healthcare provider to determine the right product and dosage for your needs.

Should I take omega-3 supplements while using GLP-1 medications?

If you don't regularly eat oily fish, an omega-3 supplement may help increase your intake. Whether supplementation is beneficial depends on your diet, health goals, and advice from your healthcare provider.

Do GLP-1 medications cause nutrient deficiencies?

GLP-1 medications are not known to directly cause nutrient deficiencies. However, because they often reduce appetite and food intake, some people may consume fewer essential nutrients over time if meals are not well balanced.

Can I take a multivitamin with GLP-1 medications?

A multivitamin may help fill nutritional gaps for some individuals, particularly if food intake has decreased. However, it shouldn't replace a varied, nutrient-rich diet or personalised advice from a healthcare professional.

How do I know if I need supplements?

The best way to determine whether you need supplements is to evaluate your diet, overall health, and, when appropriate, blood test results with your healthcare provider or a registered dietitian.

Final Thoughts

GLP-1 medications can be an effective tool for supporting weight management and metabolic health, but they're only one part of a healthy lifestyle.

Prioritising nutrient-dense foods, staying physically active, and meeting your daily protein, fibre, vitamin, and mineral needs can help support your health throughout your weight loss journey. When dietary intake isn't enough, carefully selected supplements may help fill nutritional gaps under the guidance of a healthcare professional.

At Just Glow, we believe that long-term wellness starts with evidence-based nutrition and premium-quality ingredients. Our science-backed supplements are designed to complement a balanced diet and healthy lifestyle, helping you make informed choices that support your wellbeing every step of the way.