Answer
After absorption from Covonia Chesty Cough Mixture Mentholated, menthol is excreted in the bile and urine as a glucuronide.
Sources for this answer
- Covonia Chesty Cough Mixture Mentholated / Covonia Mucus Cough Oral SolutionThornton & Ross Ltd · emc · SmPC §5.2 Pharmacokinetic properties · Version 5Document updated
Sources checked