Limit vitamin K......it's proven to increase platelet count!

People treated with HU should unusually supplement with folic acid (vitamin b-9). If I remember correctly, this info is included within the prescription instructions when the med is picked up. If applicable to anyone, talk with your doctor about supplementing.

The reason for taking a generic multivitamin would not be related to the ET. It would be to support general health. There is likely no downside providing the vitamin does not contain iron. If you are iron deficient and diagnosed with ET, your MPN care team would need to take a closer look at your diagnosis to rule out masked PV. There is no point to taking other vitamin supplements unless you have a diagnosed deficiency. This is something to have assessed by a medical professional if you have any concerns about your nutritional status. Having a complete nutritional analysis is a good idea for anyone, particularly as we age. More so when you have a MPN. We need to take good care of out bodies beyond the immediate MPN treatment priorities.

Suggest you touch base with a medical profession who is well-versed in nutrition. Note that this is not all doctors. Unfortunately, many doctors have limited training in nutrition. Integrative and Functional Medicine doctors have better knowledge in this area.

P.S. Of course, I meant...usually...