What specific strain numbers are in each probiotic? Ceylon Keeslar February 12, 2021 17:47 Updated Follow With the exception of the ProBiota HistaminX, the probiotic strain numbers are proprietary. To see ProBiota HistaminX strain numbers, see ProBiota HistaminX Strains article. Related articles What strains are contained in ProBiota HistaminX, and in what amounts? Comments 0 comments Article is closed for comments.