I’m an aging athlete, 71, I lift weights for 4hrs without resting every other day, and what keeps me going is Super Foods. I’ve been using Milk Thistle for about 5yrs from different countries from all around the world and they’ve all been good (except for one) and this one is no exception. Whether in whole seed or powder form, I always pre-sprout it, which means soaking it in just enough water to cover it for 24hrs in a warm room, or in the oven with the light on. Then, I run it in a 3hp blender until it reaches 110 degrees with some Olive Oil, mineral and vitamin supplements and at the end, add a 34 strain probiotic from Garden of Life, then let it sit out again for another 24hrs. This cultured mash is super-nutrient dense and will contribute greatly to your energy, strength, stamina, and overall well being.The one brand that was awful was "Super Organics Milk Thistle Seed Powder | Raw Organic Superfood - Vegan, Gluten-Free & Non-GMO, 8 Oz." I wrote them a scathing Review. Their product had almost reached expiration, had no flavor (an indicator of nutrient density) and while using it I became very weak. Their price was also too high even for good quality, which theirs definitely was not.