How long after coffee do i take my vitamins so as not to interfere with absorption?

Immediately Whenever: All vitamins are single molecules so plentiful in most foods that humans have not retained all genes/proteins to manufacture out of other molecules, typically missing just 1 step. Food is a complex mix of billions of molecules & body's digestive process deals with the absorption complexities. Yet some people promote fear of ingesting some molecules not in optimal order; rarely a significant issue.