Is Procainamide Safe in Breastfeeding

Question

I am a breastfeeding mother and i want to know if it is safe to use Procainamide? Is Procainamide safe for nursing mother and child? Does Procainamide extracts into breast milk? Does Procainamide has any long term or short term side effects on infants? Can Procainamide influence milk supply or can Procainamide decrease milk supply in lactating mothers?

Procainamide lactation summary

DrLact safety Score for Procainamide is 1 out of 8 which is considered Safe as per our analyses.
A safety Score of 1 indicates that usage of Procainamide is mostly safe during lactation for breastfed baby.
Our study of different scientific research also indicates that Procainamide does not cause any serious side effects in breastfeeding mothers.
Most of scientific studies and research papers declaring usage of Procainamide safe in breastfeeding are based on normal dosage and may not hold true for higher dosage.
Score calculated using the DrLact safety Version 1.2 model, this score ranges from 0 to 8 and measures overall safety of drug in lactation. Scores are primarily calculated using publicly available case studies, research papers, other scientific journals and publically available data.

Answer by Dr. Ru: About Procainamide usage in lactation

Only 1% to 2% of maternal dose is secreted into breast milk.

Answer by DrLact: About Procainamide usage in lactation

Limited information indicates that maternal doses of procainamide 2 grams daily produce low levels in milk and would not be expected to cause any adverse effects in breastfed infants, especially if the infant is older than 2 months. Because of the relative lack of data concerning breastfeeding during maternal procainamide therapy, exclusively breastfed infants should be carefully monitored if this drug is used during lactation, possibly including measurement of serum levels to rule out toxicity if there is a concern.