Füss & Friends Daily Wellness Tincture comes in a specially formulated 20:1 CBD:THC ratio designed for furry friends. -Small friends tincture will last up to 4-6 weeks for your furry friend weighing 5-30 pounds. -Medium friends tincture will last up to 4-6 weeks for your furry friend weighing 40-60 pounds. -Large friends tincture will last up to 4-6 weeks for your furry friend weighing 70-100 pounds.