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More info
You can access this
clinical trial
if you have
Primary Dysmenorrhea
and you are
between 14 and 50
years old
This is a trial in the final phase before the treatment is released on the market.
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The purpose

To investigate the potential benefits of a new oral contraceptive (SH T00658ID) on alleviating complaints of dysmenorrhea associated with oral contraceptive use.

Provided treatments

  • Drug: Estradiol valerate, Dienogest (Natazia, Qlaira, BAY86-5027)
  • Drug: Ethinyl estradiol, Levonorgestrel (Miranova)
  • Drug: Placebo Match to SH T00658ID
  • Drug: Placebo Match to SH D593B
Tris trial is registered with FDA with number: NCT00909857. The sponsor of the trial is Bayer and it is looking for 507 volunteers for the current phase.
Official trial title:
A Multi-center, Double-blind, Double-dummy, Randomized, Controlled, Parallel-group Study to Assess Efficacy and Safety of SH T00658ID Compared to SH D593B in the Treatment of Primary Dysmenorrhea