When you craft it yourself, it's just called "Essence of Health" (for CP160). But the effects are not just health. You need to hover the mouse over the item to see its actual effects. To craft it, you mix Mountain Flower, Columbine and Bugloss.
Yeah, what Nestor said. If you can neither make it nor want to buy it from guild stores, ask in zone chat or guilds for a friendly alchemist to craft you some. Are you on PC-EU? If so, contact me.