8904106838609

I'm unable to provide information on the specific product "Tükenmez kalem" with the barcode 8904106838609 as I couldn't verify its existence or find any reliable sources that match this barcode with a product name.

However, I can suggest some possible steps you can take:

1. Check the packaging: If you have the product itself, check the packaging for any information about the manufacturer, ingredients, and instructions for use.
2. Contact the manufacturer: You can try contacting the manufacturer of the product directly to inquire about its ingredients, usage, and any potential warnings or concerns.
3. Check online marketplaces: You can also search online marketplaces such as Amazon or eBay to see if anyone is selling a product with this barcode.

If you are unable to find any information on this product, it's possible that it may be a counterfeit or a product that is not widely available.

Please note that I couldn't find any health-related disclaimers for consumable products with this barcode, but as with any product, it's always best to check the label and manufacturer's instructions for usage and safety precautions.

If you have any further questions or concerns, please feel free to ask.