Hello. I have an interesting situation. I have been hypothyroid for many years. I took Synthroid for many years and now take a combination of Synthroid/Cytomel. My dilema is that when I take vitamins (taken at least 4 hours after thyroid meds), it raises my TSH, making me feel hypo. I was wondering if anyone else has experienced this. The only thing that I can think of is when I took Vitamin D by itself, it also raised my TSH. My current vitamin has 1000 mg of Vitamin D. I have heard that Vitamin D is a hormone, so maybe this is what is affecting the TSH. When my thyroid meds were raised to accommodate the increased TSH, i began to have hyper symptoms. I am so confused. I guess that I will not be able to take vitamins. Please help with any input.