Randomised controlled trial
Gollnick et al. — pivotal adapalene–BPO trial
Gollnick HP et al., British Journal of Dermatology, 2009;161(5):1180–1189
- Participants
- 1,670
- Duration
- 12 weeks
- Comparator
- Adapalene 0.1% alone, BPO 2.5% alone, vehicle
In patients with mild-to-severe acne, the fixed combination produced greater reductions in total, inflammatory, and non-inflammatory lesion counts than either monotherapy and vehicle over 12 weeks. Trial results do not predict individual outcomes.

