An elimination diet can potentially limit your intake of certain nutrients so it can be beneficial to supplement. The most common supplements taken during an elimination diet include the following.

Dr. Kneessi typically recommends incorporating a collagen protein supplement and a quality multivitamin during the elimination diet to ensure adequate nutrient intake.

Recommended Supplements

View our recommended Elimination Diet supplements

  • Hydrolyzed Collagen Protein Chocolate Cream: 2 scoops with 8 ounces water daily
  • ProMulti-Plus: 3 capsules twice daily with food

Other Beneficial Supplements

Protein powder

If you’re eliminating certain sources of protein, a protein powder might be helpful. We recommended Collagen Protein above.


This can help to fill any nutritional gaps that might arise from eliminating certain food groups. We recommended the promulti-plus above.


These can support gut health, especially if you’re eliminating dairy products, a source of probiotics.

Digestive enzymes

These can help your body break down foods more effectively and might be particularly useful if you’re having digestive symptoms.

Omega-3 fatty acids

If you’re eliminating fatty fish, you might need an omega-3 supplement to ensure you’re getting these essential fats.


If your elimination diet cuts out a lot of grains or legumes, you might need a fiber supplement.

Individual vitamins or minerals

Depending on what you’re eliminating, you might need to supplement with specific vitamins or minerals. For instance, if you’re cutting out dairy, you might need extra calcium.