Isovactin AA Plus Powder 15, Lemon Lime.Medical food for the dietary management of Isovaleric acidemia (IVA). Dispensed by prescription. Isovactin AA Plus Powder is a Leucine free, amino acid based medical food for the dietary management of IVA for individuals over one year of age. Isovactin AAPlus Powder is nutritionally complete, contains DHA, prebiotic fiber, and a nutrient blenddesigned to support bone health. 30 count 1.4 oz. packets in case. 15 grams of protein equivalent per packet. 150 calories per packet and 4500 calories per case.