Harker Herbal Be Well Vitamin CA high strength and easily absorbed Vitamin C syrup that's gentle on the stomach and delicious straight from the spoon. Our vitamin C is derived from sea buckthorn berries, a nutritious berry that contains around 10 times more vitamin C than an orange. Each 10 ml dose contains 650mg of vitamin C but, being a liquid, it's easy to adjust the doses to get more or less depending on what you need. The adjustable doses make this a good option for families