Live Superfoods Sea Buckthorn Powder Our Sea Buckthorn powder is 100% natural and is a valuable source of potent antioxidants. Ecologically valuable in the prevention of soil erosion, Sea Buckthorn is nutritionally valuable as it is packed with 12 times more Vitamin C than an orange, plus Vitamin E, Flavonoids and other valuable nutrients, Sea Buckthorn Powder is a great addition to your smoothie or yogurt recipes!