A supplement designed for longevity is difficult to review - does it deliver on its promise? Not sure yet, but I have high hopes. While I'm not a longevity expert, I am a registered dietitian and I will say that there's a ton of science to back up the efficacy of the ingredients in this supplement (especially when consumed in whole form, at least for some). This vegan and gluten-free formula contains botanicals like ashwagandha, turmeric, green tea, bacopa monnieri, milk thistle, and astaxanthin, all of which are sourced from plants. It's also free from artificial preservatives and is non-GMO.Any good supplement will be third-party tested, and this one may or may not be. There is no indication of third-party testing on the label; typically the label will disclose which company tested it. This raises suspicion. The label is completely devoid of any mention of third-party testing, although the Amazon marketing description online indicates "Third party tested." I am wary; if this were true, they'd shout it out on the label, because such testing is very pricey and instills valuable trust. So I remain skeptical that this product is indeed third-party tested (or maybe it is and failed?), and would be very disappointed if I were to discover that the mention in the Amazon description is an untruth. The label should match the description.The label indicates "GMP-Certified," which means that they operate under strict quality control and safety standards in the production facility. That's a good thing.The bottle comes with 60 easy to swallow caps, and a dose is 2. So it only lasts 30 days. I've taken it for 5 days. So far, I don't feel different (I'm healthy and usually feel good; I imagine any effect might be subtle or take some time), but it's worth a month's try. I would buy more if it were verified that the product was indeed third party tested for the potency of the ingredients that are claimed to be present in the product.