Answer
Yes, Cialis (tadalafil) is contraindicated in patients who have lost vision in one eye because of NAION, regardless of whether the episode was associated with previous PDE5 inhibitor exposure.
Sources for this answer
- Cialis 2.5mg film-coated tabletsEli Lilly and Company Limited · emc · SmPC §4.3 Contraindications · Version 33Document updated
Sources checked