The Alienation Gene by Marinus Mans

Alexander de Swardt has lived a charmed life after a miracle drug cured him of a rare neurological disorder. Now a chief executive for a blue-chip company, he’s high on power and his fast-paced lifestyle. But the cracks begin to show as he realises that something far more sinister coils beneath the surface of his world. Medical doctor Heinrich Sauerman’s experimental formula is all that stands between Alexander and a return to life in a wheelchair, but when the doctor vanishes, along with his formula, Alexander is toppled into a madcap hunt to track down the doctor. But he’s not the only one seeking Sauerman, in addition to getting to the bottom of the mysterious disappearance of the Boophone disticha plants that are somehow linked to the drug that got Alexander walking again. Alexander soon discovers that his reality is not as sane, safe, or predictable as he’d like, and if he doesn’t get to Sauerman first, others will, whose intentions may well doom all of reality.