Answer
Yes, using olopatadine or other antihistamines by nasal, eye or oral routes alongside Ryaltris may increase the risk of antihistamine adverse effects.
Sources for this answer
- Ryaltris 25 micrograms/actuation+600 micrograms/actuation Nasal Spray, suspensionGlenmark Pharmaceuticals Europe Ltd · emc · SmPC §4.4 Special warnings and precautions for use · Version 5Document updated
Sources checked