The most well-known active ingredients of cannabis are THC and CBD. Sativas have higher THC content and are more euphoric having shorter medicinal effects ranging from 30 – 60 minutes. Indicas have higher CBD content and provides more body relaxation and medicinal effects ranging from 2 – 4 hours. To relieve most head ailments & conditions, Sativa strains can treat anxiety, headaches, depression, etc. To relive most body ailments & conditions, Indica strains can treat insomnia, nausea, muscle pain, etc. Many medical marijuana patients use Sativas during the day and Indica strains at night. Hybrid strains are popular and offer a wider range of medicinal value.