That's correct, mdropp. Nilvadipine is a 20+ year old blood pressure medication. Roskamp has invested a great deal of time, effort, and money to investigate the medical potential of both Nilvad and Anatabine, and is very unlikely to walk away from either, especially since both represent a near monopoly on their effectiveness.
That could include a combined Nilvad/Anatabine to treat Alzheimer's, although I have never heard of any attempt to test such a combination.