30C is selected when the condition is very active (acute) and/or when there is an emotional element to the condition, such as occasional sleeplessness. 30C remedies should be taken as a short course only, unless prescribed by a practitioner. Ingredients: Arnica 30C homeopathic potency in 100mg Lactose/Sucrose tablets How To Use: ADULTS: 2 tablets; CHILDREN:1 tablet, to be dissolved under the tongue. For acute cases, 1 dose every 2 hours for up to 6 doses. For less acute cases, 1 dose 3 times a day between meals until the condition improves. If symptoms worsen or persist for more than 7 days please consult your doctor.