Bimatoprost/timolol fixed combination: a 3-month double-masked, randomized parallel comparison to its individual components in patients with glaucoma or ocular hypertension

J Glaucoma. 2008 Apr-May;17(3):211-6. doi: 10.1097/IJG.0b013e3181507313.


Purpose: To evaluate the safety and efficacy of a fixed combination (FC) of bimatoprost (BIM) and timolol (TIM) compared with each of the active components for 3 months.

Patients and methods: Two double-masked, randomized, multicenter parallel studies of FC (once-daily, mornings), BIM (once-daily, evenings), or TIM (twice-daily) were conducted in 1061 patients with glaucoma or ocular hypertension.

Results: Mean diurnal decreases from baseline intraocular pressure (IOP) at month 3 were 8.1, 7.9, and 6.4 mm Hg for the FC, BIM, and TIM groups, respectively. The proportion of patients with a mean diurnal percent reduction from baseline in IOP of more than 20% across all visits was 81.8% (436/533), 72.1% (191/265), and 49.8% (131/263) for the FC, BIM, and TIM groups, respectively (P<0.001 for FC vs. BIM and FC vs. TIM). The proportion of patients achieving an IOP of less than 18 mm Hg at all time points was 39.2% (209/533), 28.7% (76/265), and 12.2% (32/263) for the FC, BIM, and TIM groups, respectively (P=0.003 for FC vs. BIM, and P<0.001 for FC vs. TIM). The most commonly reported treatment-related adverse event was conjunctival hyperemia, with the greatest incidence in BIM (38.5%, 102/265), followed by FC (22.7%, 121/533, P<0.0001 vs. BIM) and TIM (6.8%, 18/263; P<0.001 vs. FC).

Conclusions: FC was statistically significantly more effective than BIM or TIM for most comparisons, and safer than BIM with respect to common ocular adverse events. FC represents a convenient, therapeutic advantage over separate bottles.

Publication types

  • Comparative Study
  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Amides / administration & dosage*
  • Amides / adverse effects
  • Antihypertensive Agents / administration & dosage*
  • Antihypertensive Agents / adverse effects
  • Bimatoprost
  • Cloprostenol / administration & dosage
  • Cloprostenol / adverse effects
  • Cloprostenol / analogs & derivatives*
  • Double-Blind Method
  • Drug Combinations
  • Female
  • Glaucoma, Angle-Closure / drug therapy*
  • Glaucoma, Open-Angle / drug therapy*
  • Humans
  • Intraocular Pressure / drug effects*
  • Male
  • Middle Aged
  • Ocular Hypertension / drug therapy
  • Timolol / administration & dosage*
  • Timolol / adverse effects
  • Tonometry, Ocular
  • Treatment Outcome


  • Amides
  • Antihypertensive Agents
  • Drug Combinations
  • Cloprostenol
  • Timolol
  • Bimatoprost