1. Medical Documentation Reference: Include if there were any adverse reactions requiring medical attention

2. Witness Statements: Reference to any witnesses who can verify the issue, particularly relevant for adverse reactions

3. Product Testing Results: Include if any independent testing has been conducted on the product

4. Legal References: Citation of relevant consumer protection laws or regulations, particularly useful if the complaint has escalated

5. Social Media Documentation: Reference to any social media posts or online complaints if relevant to establishing the timeline or extent of the issue

1. Purchase Documentation: Copies of receipts, invoices, or proof of purchase

2. Product Images: Photographs of the defective product, packaging, and any visible issues

3. Medical Records: If applicable, copies of medical reports or treatment records related to adverse reactions

4. Communication Records: Copies of previous correspondence with the company, including emails or chat logs

5. Product Analysis Report: If available, any third-party testing or analysis reports of the product