Thank you for that reminder, amon!! I think I'm remembering correctly that it is the calcium supplement that has to be taken 8 or more hours away from the verapamil, because verapamil is a calcium channel blocker.
Just a reminder if your going to take verapamil and be on D3, separate the supplements from verapamil by 8-12 hours. I have been on both and will make a difference. The supplements if taken to close to verapamil will lessen the verapamil's effectiveness.