Oxytetracycline Oxytetracycline Eggshell Calcium + Vitamin D3
ModerateEggshell Calcium + Vitamin D3 may interact with oxytetracycline. The leaflet doesn't say how the two affect each other, only that an interaction is possible when they are taken together.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.