Sessions

Keeping reptiles as pets has become increasingly popular in recent decades; however, nutrition-related diseases are a common problem in these species. As adequate nutrient supply often cannot be ensured solely through diet, the use and proper dosage of vitamins and mineral supplements are of key importance.

In this study, I analysed the composition of 90 different products from 29 manufacturers, based on label information and data available online. I distinguished three product groups: complex supplements (70 items), calcium supplements without vitamin D3 (11 items), and calcium supplements containing vitamin D3 (9 items). I aimed to evaluate the vitamin and mineral content of these products in light of the available literature. I also assessed the physical form of the supplements and whether dosage instructions were provided, which could be useful for reptile owners. Each fulfilled criterion was assigned one point (complex supplements: maximum 8 points, calcium supplements without vitamin D3: maximum 4 points, calcium supplements containing vitamin D3: maximum 5 points). The products were rated as "adequate" (achieving maximum points) or "inadequate". The maximum score was achieved by 7 complex supplements, 5 calcium supplements without vitamin D3, and 5 calcium supplements with vitamin D3. Altogether, 17 products (18.9% of all evaluated items) met all requirements. I analysed the possible correlation between the scores achieved and the manufacturers separately for the three categories using a chi-square test. I found a significant correlation only for complex products (p = 0.008122).

Our results indicate that the majority of products alone are insufficient to meet the vitamin- and mineral requirements of reptiles and therefore may not prevent the development of dietary deficiencies. This highlights the need to improve owner awareness and education on the proper use of dietary supplements, as improper application may provide a misleading sense of security. The findings of this study may contribute to a more objective evaluation of the products available on the market, thereby supporting reptile keepers and veterinarians in making more informed choices.