ANKENY — The Des Moines company selected to grow marijuana and manufacture medical cannabis products would like to produce tinctures, creams, soft gels, suppositories and even inhalers that allow patients with a variety of ailments to get customized therapies. “We want to create efficacious doses within the parameters established by the law,” Lucas Nelson, an attorney for Kemin Industries and a consultant with MedPharm Iowa, told the Iowa Medical Cannabidiol Advisory Board Friday morning.