Percentages

A percentage means u2018out of 100u2019. The percentage concentration can be defined as the amount of a drug in 100 parts of the product. For example, intravenous glucose is often prescribed as 5%. This means that each 100ml of water contains 5 parts glucose. The most common percentage is the weight of the drug in a volume, such as lidocaine which commonly comes in 0.5% to 2%. 1% lidocaine contains 1g of lidocaine in 100ml or 1,000mg in 100ml.