Here is one source (peptide dosages dot com - located under "Single Peptides") but I'm not sure you would need to take it for 16 weeks. In laboratory cell studies PNC-27 starts killing cancer cells within 15 minutes and complete cancer cell death with 90 minutes to 24 hours. If it's THAT effective, I don't see why anyone would take it for months and months. I would think a cycle more similar to Epitalon would make more sense, but that's just my opinion.