Udo's Choice Infants Blend Probiotics (75g). With 3 billion 'friendly' bacteria per gram and 6 strains of lacto and bifido bacteria, Udo's Choice Infant's Blend is perfect for your little one. Suitable from birth, simply add to breast milk, formula or other liquid once cooled.. Please note this product will arrive unrefrigerated.. With such a short timescale in transit its quality/strength will not be affected as the product has a long shelf life. Please refrigerate upon receipt and use as recommended. For this reason, we can’t accept returns of Udo's Choice.