Interactions between your drugs No interactions were found between Vitamin B Complex 100 and Vitamin D3. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.
Is it OK to take vitamin D and B complex at the same time?
It's safe to consume vitamin D and the B complex together as a supplement or through food sources. However, if you're on medications or have a medical condition, consult your doctor about any drug interactions before taking supplements.