Dosage
Manufacturer products suggest 50 mg to 500 mg of yeast nucleotides per day. There are few published human trials. Ask your healthcare provider before regular use.
Ingredient guide
Yeast Nucleotides (Immunell): Immune Evidence
Yeast nucleotides are RNA-derived building blocks supplied as immune ingredients in some supplements (e.g., Immunell). Animal studies support immune modulation. Direct human trial evidence is limited.
Limited evidenceBenefits
- Nucleotides are essential for cell growth, immune cell production, and growth signalling.
- Brewer's yeast supplementation enhances immune responses in aged mice.
- Animal studies show modulation of antibody responses and gut immune function.
Evidence summary
What yeast nucleotides are
Yeast nucleotides are the small building blocks of RNA, extracted from brewer's or baker's yeast. They include adenosine, guanosine, cytidine, and uridine monophosphates. Nucleotides are essential for cell growth and division, including immune cell production. Immunell is a branded yeast nucleotide ingredient.
What the human research shows
Brewer's yeast supplementation improves baseline immune responses in aged mice. Yeast nucleotide supplementation modulates gut immune response and microflora in weaned pigs under sanitary challenge. Preterm infants on nucleotide-supplemented formulas showed higher IgM and IgA in the first three months. Direct human trial evidence on yeast nucleotides specifically for adults is limited. We grade the evidence as limited.
Dosage & safety
Side effects
- Generally well tolerated.
- Most common are mild stomach upset.
- Allergic reactions can occur in people sensitive to yeast.
Interactions
- No well-documented serious drug interactions.
Warnings
- Speak with a doctor before yeast nucleotide use if you have a yeast allergy.
- People with gout or high uric acid should be cautious, since nucleotides can affect uric acid.
- Direct human trial evidence on yeast nucleotides is limited.
Products with this ingredient
Related ingredient guides
Citations
- Brewer's yeast supplementation enhances immune response of aged mice pubmed.ncbi.nlm.nih.gov
- Dietary nucleotide-rich yeast extract modulates gut immune response and microflora pubmed.ncbi.nlm.nih.gov
Frequently asked questions
Do yeast nucleotides support immunity?
Animal and infant evidence is supportive. Direct human trial evidence in adults is limited.
Is yeast nucleotide safe?
Generally well tolerated. People with yeast allergy, gout, or high uric acid should be cautious.