Vitamin supplement to support bird health. Nekton S 35g. - Brand: Nekton - Product Name: Nekton S - Purpose: Vitamin supplement for birds - Contents: 35g - Expiration Date: December 10, 2027 The first and second photos are from when I purchased it on Amazon on January 5, 2026. The third photo shows it as it was received and stored. It comes with an aluminum pack to prevent moisture, which is very convenient. I bought it for stock, but I no longer need it because my bird has started eating pellets well. Please refrain from price negotiations as shipping costs are involved.