Many happy owners have said that they had trouble getting their dogs to take regular supplements, but the soft chews dogs eat up like treats! (ipupster.com)
More severe cases may require regular supplements of vitamin B12 or other medications to bring the symptoms under control. (vetinfo.com)
However, I wound up with so many free samples that, even with regular supplementing for a month or so and occasionally after that, I didn't pay for formula until my son was about 4 months old. (romper.com)