Hi this is John at Valhallalabs. We recently put togather a complex for testing (controlled test group). First we added 3grams of cordyceps s. hybrid and combined it with 1 gram of the usp labs 1-carboxy-2-amino..... half of the subjects got diaherria. I cannot figure out if the problem is one of the two components or the combination of the two. Has anyone ever heard of the 1-carboxy-2-amino giving anyone diaherria?