Answer
Jan 11, 2026 - 02:51 PM
Yes, our Seaweed Calcium for Dogs and Cats is a calcium supplement that is relatively low in iodine, making it a safer choice for your hyperthyroid cat. For comparison, brown seaweed like kelp can contain up to 4,500 mcg/g of iodine, while the red algae Lithothamnion calcareum in this calcium formula provides only about 32 mcg/g. Have you considered our Hyperthyroid Tonic for additional support of your cat's overactive thyroid? Since your cat does have a number of health challenges, if you need more help, please use our Pet Health Consultation Form.
