Positives

• In a randomized post-COVID trial, 61.5% of patients receiving cerebrolysin had complete recovery of smell and taste with another 17% gaining partial recovery, while training-only controls saw none PubMed.
  
  
• An animal model showed intranasal cerebrolysin improved learning and memory and reduced post-traumatic neuronal damage, supporting the route a patient might consider for cognitive symptoms PubMed.
  
  

Negatives

• A patient should know that the strongest post-COVID trial used intramuscular dosing, not intranasal, leaving the home spray route largely unstudied in humans PubMed.
  
  
• Patients reviewing the broader literature found cerebrolysin's effects in long COVID cognition reported mainly in observational and Russian-language sources rather than blinded Western trials PMC.
  
  

Hurdles & Side Effects

• A US patient cannot legally obtain cerebrolysin domestically because it is not FDA-approved, forcing reliance on overseas pharmacies PMC.
  
  
• A patient with a porcine allergy or religious dietary restriction cannot use cerebrolysin because it is derived from pig brain tissue PubMed.