Neurobiologix Polypeptide Immune Spray - Formerly (PRP Immune Recovery Spray ) Boost immune system, and naturally alleviate allergies. Natural Proline-Rich Polypeptides (PRPs) Extracted From Fresh Colostrum to provide natural immune system support. Naturally support and enhance immune system, maintain healthy cognitive function, promote cytokine production/balancing, aid in allergy, and irritation of the sinuses. Recommended Use: Spray 4 times directly in to the mouth and swallow. Take twice daily, early in the morning and before bedtime, or as directed by a healthcare professional.