Answer
Each 4 mL bottle of Travatan (travoprost) 40 micrograms/mL eye drops contains 2.5 mL of solution.
Sources for this answer
- TRAVATAN 40 micrograms/mL eye drops, solutionNovartis Pharmaceuticals UK Ltd · emc · SmPC §6.5 Nature and contents of container · Version 22Document updated
Sources checked