No, it is not recommended to give Tums or any other human antacid medications to rabbits without the guidance and supervision of a veterinarian. While Tums contains calcium carbonate, which is a source of calcium, it is formulated for human use and may not be suitable or safe for rabbits.

Rabbits have specific dietary requirements, and their calcium levels should be managed through a balanced and appropriate rabbit diet. Excessive calcium supplementation can lead to health issues, including urinary problems and the formation of bladder stones.

If you suspect that your rabbit has a calcium deficiency or any other health concern, it is best to consult a veterinarian who specializes in rabbit care. They can assess your rabbit's condition and provide appropriate advice and treatment options to address any imbalances or deficiencies in their diet.