Vetsense Avi-Calcium is a water-soluble calcium and vitamin D3 supplement for poultry and pet birds. Designed for backyard flocks and aviary birds at all life stages, it targets two common nutritional gaps: eggshell integrity in laying hens and bone development in growing birds. Delivered via drinking water rather than feed, making dosing practical even with less-handled birds.

Active constituents are calcium and vitamin D3, with the D3 component supporting calcium absorption and making the supplement more effective than calcium alone. Administered at 4mL per bird in 500mL of water per 2kg of body weight, used as the sole water source during treatment. The 125mL concentrated liquid provides multiple treatment sessions for small flocks, and the soluble format avoids the wastage common with feed-mixed powders.

Backyard chicken keepers reach for Avi-Calcium when eggshell quality deteriorates or during periods when dietary calcium may be insufficient — high-production laying periods and moulting season both increase demand. The water delivery method removes the need to handle individual birds, which makes it practical for larger or less-tame flocks.