Health Queries about Cipcal D3 60000IU Capsule 4s

I've been taking phenytoin 300mg and divalproex 500mg once daily for the past 7-10 years - should I be taking calcium, Vitamin D3 and Vitamin B12 supplements, and what dose of a Vitamin D3 60000IU Soft Gelatin Capsule would be right?

Long-term use of anti-seizure medicine can genuinely lower calcium and Vitamin D levels over time, so it's smart to be thinking about this after 7 to 10 years o...