GVC Good Effervescent Energy Boost 15sThe Good Vitamin Co. Ltd Good Energy Energy Boost Effervescent Tablets: Need an energy boost? Good Energy is suitable for people who frequently feel tired and have low energy levels, struggle to focus on mental tasks, and need a bit of a kick to stay energised. Vitamin B1 (Thiamine Hydrochloride) 5mg Vitamin B2 (Riboflavin) 5mg Vitamin B3 (Niacin) 20mg Vitamin B5 (Pantothenic Acid) 5mg Vitamin B6 (Pyridoxine Hydrochloride) 5mg Biotin 100mcg Vitamin