I find this is much like a Mirabilis, that’s almost certainly in its parentage. Keep it warm, not too much light, and slowly adapt it to the windowsill. They seem to need high humidity while they are young. Pitchers vary from green to red on the same plant. It sends up lots of basil shoots and prefers hanging to climbing. There are often a dozen pitchers on the plant.
Lee’s Botanicals cultivated this plant, I think they may be the only source. I’ve not been able to find any other mention of it.