Calcivet - Liquid calcium for birds with added vitamin D3
The Birdcare Company
Please note that Poultry CalciBoost will improve hen health but after laying a dozen eggs many go broody. If you want the best health outcome this product is great. If you want to maximise egg production do not use it.
Poultry CalciBoost is a highly bio-available Chelated calcium supplement for backyard poultry. It comes in a powdered format which is easily sprinkled over moist food, such as layers pellets or kitchen scraps, to which it will then stick. Use it four to six days a week when your hens are laying. During the off season give it once a week to keep their bone supplies topped up ready for their next period of laying.
I had noticed I was getting thin shelled eggs so gave poultry Calciboost a try. It's far easier to use than liquid calcium and very quickly the eggs transformed into beautifully hard shelled eggs and I have happier, healthier hens too. Very impressed!