Answer
It may weaken the response to oral live typhoid vaccine. The vaccine should be completed before mefloquine is started, according to professional travel-health advice.
Sources for this answer
- Lariam 250 mg tablets / Mefloquine 250 mg tablets — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.