Does ProBiota HistaminX contain gluten or grains? Ceylon Keeslar November 16, 2020 23:15 Updated Follow Probiota HistaminX does not contain any gluten or grains. Related articles What are the ingredients in ProBiota HistaminX sourced from? Practitioner Directory How many total SNPS and genes are evaluated with StrateGene? Are there any warnings or side effects of using Optimal Liposomal Vitamin C? Are there any warnings or side effects when using Optimal Glutathione Plus? Comments 0 comments Article is closed for comments.