Dr. Grinspoon is a pure sativa strain which was bred by Barney´s Farm in Amsterdam. This strain was named in honor noted physician, esteemed Harvard professor, prolific author, and of course – marijuana advocate – Dr. Lester Grinspoon. Its a perfect strain for creatives and thinkers since it heightens the cerebral activity and sensory awareness. It provides a long lasting, uplifting and energizing head high. The THC levels would range from 20% to 25% Medical Marijuana Patients commonly use Dr. Grinspoon to treat mood disorders, attention deficit and chronic pain.