Sustenium probiotics is sold by Menarini, the leading biopharmaceutical company in Italy.For Sustenium REcharge and PROhydra, LGG probiotics strain is used. It is one of the most studied probiotics strain, with more than 1100 scientific mentions. It is widely researched fulfilling the following criteria11:• Produce an antimicrobial substance• Resistance to acid and bile• Beneficial effects of human healthFor PROgold, BL HN019 probiotics strain is used. It is a widely studied probiotics genus, to provide support of gut microbiome, including in the elderly; it shown to reduce the frequency of functional gastrointestinal symptoms, such as irregular bowel movements. 12Furthermore, Sustenium is a 2-in-1 probiotics, offering you value adding vitamins and/or minerals to meet your specific needs on top of promoting intestinal flora balance.REcharge has added Vit B6, which promotes metaboli and enhances immunity.PROgold has added Vit B12, which reduces fatigue and tiredness; Vit C, which maintain normal function of immune system. It also has added Zinc, which protects cell from oxidative stress.PROhydra has added mineral salt, which helps rehydration and replenishes electrolytes, recommended after gastrointestinal discomfort.