Astaxanthin is probably the most powerful antioxidant; 100s of times higher than the antioxidant capacity of CoQ10 and even higher than vitamins A, E and C as well as plant polyphenols. It appears to provide several health benefits, which is mostly linked to its super high antioxidant activity. Natural astaxanthin is superior to synthetic ones, but the latter one predominates the industry. Its primary natural sources are micro-algae and krill powder as well as krill oil. Science4Pets uses both krill powder and krill oil in its pet products. Use of krill, either oil or meal/powder, as an astaxanthin source adds another dimension to any pet product as it contains omega 3 fats as both triglycerides and phospholipids, which is believed to have greater bioavailability.
Probiotics are basically the friendly viable, living microbial cells linked to several health benefits, including improved digestion, weight loss, enhanced immune function, healthier skin, and reduced risk of many chronic diseases. Just like us humans, it can be equally important for pets to also receive probiotics from external supplements to improve the gut environment and long term digestive and overall health. Of the two types of bacteria used in probiotic products, spore forming ones (Bacillus coaulans and Bacillus subtilis etc.) are far superior to vegetative types (Lactobacillus, Bifidobacterium, and Enterococcus etc.). Besides the bacteria, other vital components of a probiotic product include prebiotics (food for the microbes themselves), digestive enzymes, important Ayurvedic and other herbs, and powerful antioxidants, such as astaxanthin from krill powder.