One of the Public Health nurses has a case of an infant of a breastfeeding mother on Methodone therapy being diagnosed with rickets. The referral states that rickets were caused by the methodone therapy. Nurse states that dosage is "quite significant". Child is now one year old. I have found no reference of this in Hale, Lawrence or Riordan. Rickets seem to be diagnosed strictly as a result of inadequate vitamin D ingestion. Has anyone heard of this side effect of Methodone??