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Ingredient guide

What does each ingredient do?

Read approachable guides to collagen, inulin, fiber, vitamins and other key nutrients, including food sources and practical cautions.

This content is for general education and is not medical advice. Supplement effects vary. Consult a doctor or pharmacist if you have a medical condition, are pregnant or breastfeeding, or take medication.

Collagen / Collagen peptideCollagenA structural protein found in skin, bone, cartilage, tendons, and connective tissue.

Roles and potential benefits

  • Helps provide structure, strength, and elasticity to body tissues.
  • Some studies suggest hydrolyzed collagen may support skin hydration and elasticity, but results vary with study quality.
  • It has also been studied for joint comfort; it should not replace medical assessment or treatment.
  • Vitamin C is required for the body’s natural collagen production.

Common sources

Naturally present in fish skin, chicken skin, bones, and animal connective tissue. The body digests collagen into amino acids before use.

Important notes

Check the source if you are allergic to fish, seafood, beef, or pork. Evidence for skin benefits has limitations, and collagen is not a treatment for disease.

Scientific reference
Inulin / Inulin-type fructansInulinA soluble prebiotic fiber that reaches the large intestine and feeds certain beneficial microorganisms.

Roles and potential benefits

  • Adds dietary fiber and may support regular bowel movements.
  • Acts as a prebiotic that can encourage the growth of certain beneficial gut bacteria.
  • The FDA recognizes inulin and inulin-type fructans as dietary fiber based on physiological evidence.

Common sources

Chicory root, onions, garlic, asparagus, bananas, and Jerusalem artichokes.

Important notes

Start with a small amount and drink enough water. It may cause gas or bloating, especially in people sensitive to FODMAPs.

Scientific reference
Dietary fiberDietary fiberPlant carbohydrates the body cannot fully digest, including soluble and insoluble forms.

Roles and potential benefits

  • Adds stool bulk and supports regular bowel movements.
  • Some soluble fibers slow absorption and feed microorganisms in the gut.
  • High-fiber foods can support fullness and form part of a healthy eating pattern.

Common sources

Vegetables, fruit, legumes, seeds, oats, and whole grains.

Important notes

Increase fiber gradually and drink adequate water. A rapid increase may cause gas or abdominal discomfort.

Scientific reference
ProbioticsProbioticsLive microorganisms that may provide a health benefit when the strain and amount are appropriate.

Roles and potential benefits

  • May help support a healthy community of microorganisms in the digestive tract.
  • Effects are strain-specific and cannot be generalized to every probiotic product.
  • Some evidence exists for antibiotic-associated diarrhea, while many other uses remain uncertain.

Common sources

Certain yogurts and fermented foods, plus supplements that clearly identify their strains.

Important notes

People with weakened immunity, serious illness, or premature infants should seek medical advice before use.

Scientific reference
Vitamin C / Ascorbic acidVitamin CA water-soluble vitamin involved in collagen formation, immune function, and antioxidant activity.

Roles and potential benefits

  • Required for the body to make collagen and connective tissue.
  • Supports normal immune function and acts as a physiological antioxidant.
  • Improves absorption of non-heme iron from plant foods.

Common sources

Guava, oranges, kiwi, bell peppers, broccoli, tomatoes, and citrus fruit.

Important notes

High doses may cause diarrhea, nausea, or cramps. People with kidney-stone history or iron overload should consult a professional.

Scientific reference
Omega-3 / EPA / DHA / ALAOmega-3A family of polyunsaturated fats. ALA is essential, while EPA and DHA are abundant in fish and algae.

Roles and potential benefits

  • Forms part of cell membranes throughout the body.
  • DHA is concentrated in the brain and retina, while EPA helps form several signaling compounds.
  • High-dose omega-3 products used for triglycerides should be taken under medical guidance.

Common sources

Salmon, sardines, mackerel, flaxseed, chia seeds, walnuts, and algae oil.

Important notes

Supplements may cause a fishy taste or digestive discomfort. High doses can interact with anticoagulant medication.

Scientific reference
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