Lemons are packed with vital nutrients, vitamins and minerals, including fiber, vitamin C, vitamin B6, phosphorous, thiamin, riboflavin, copper, calcium, iron, potassium and magnesium. The juice, fruit and peel of lemons are often used in natural remedies and herbal infusions, due to their potent antiseptic, anti-inflammatory, antibacterial and anti-fungal properties. Lemon is commonly used to treat sore throats, tickly coughs, fever, colds, blocked sinuses, indigestion, constipation, tinnitus and rheumatism. Lemon is also thought to help prevent kidney stones, high blood pressure and chronic stomach problems. Lemons contain powerful antioxidants, known as bioflavonoid, which help to cleanse the liver, purify the blood and strengthen the immune system. Adding the juice of half a lemon to a cup of warm water gives you a cleansing drink to help flush toxins from your liver and digestive system. Alternatively, you can buy lemon tea or dried lemons to make a refreshing drink.