Hylands Homeopathic Calcarea Phos 30X - 250 Tablets Teething Calc Phos is noted for its effect on the development of bones and teeth. It is essential for growing healthy bones and is useful for children. Calc Phos supports dentition and knitting of bones. Also good for sore throat and painful swallowing. Disclaimer: These statements have not been evaluated by the FDA. These products are not intended to diagnose treat cure or prevent any disease.