Answer
Each Tecfidera (dimethyl fumarate) capsule contains less than 1 mmol sodium (23 mg), making it essentially 'sodium free'.
Sources for this answer
- Tecfidera 120mg and 240mg gastro-resistant hard capsulesBiogen Idec Ltd · emc · SmPC §4.4 Special warnings and precautions for use · Version 25Document updated
Sources checked