About Proline-Rich Polypeptide (PRP) Complex
Colostrinin is a proline-rich polypeptide complex isolated from ovine (sheep) colostrum, distinct from generic bovine colostrum supplements. Small placebo-controlled and long-term trials in mild-to-moderate Alzheimer's disease reported stabilization or improvement in a subset of patients versus placebo/selenium, with a favorable safety profile, but sample sizes were small and it has not become a standard or FDA-approved therapy. Evidence does not extend to healthy adults or the general-wellness uses marketed on some labels.
What Proline-Rich Polypeptide (PRP) Complex supports
- Small trials in Alzheimer's disease patients suggest possible cognitive stabilization — evidence is limited to small, dated studies and doesn't extend to general wellness use
How much Proline-Rich Polypeptide (PRP) Complex to take
The RDA prevents deficiency. The effective range is what clinical trials used to actually move the outcome.
Effective
100–100
mcg
100 mcg on alternate days (3 weeks on/2 weeks off cycling) was the regimen used in published Alzheimer's trials; commercial product doses are not independently verified against this schedule.
Clinical evidence
Limited clinical evidence. Small placebo-controlled trials in Alzheimer's disease only; not studied in healthy populations, not independently replicated at scale.
NIH Fact Sheet