New study with R-Verapamil in GB

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A Randomized, Placebo-Controlled, Double-Blind, Parallel-Group, Phase 2 Study to Evaluate the Safety and Efficacy of R-Verapamil in the Prophylaxis of Episodic Cluster Headache. - Study to Evaluate the Safety and Efficacy of R-Verapamil in the Prevention of Episodic Cluster Headache.

For more please see: https://www.clinicaltrialsregister.eu/ctr-search/trial/2012-003729-62/GB

Does anybody know more about this new study and about R-Verapamil?

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Perhaps these research results are one of the reasons for the new study:

It is likely that clinical use of the R(+)-verapamil as an anti-inflammatory agent has potential therapeutic advantages. Given the effectiveness of these compounds at low concentrations and the broad spectrum of activity in inhibiting inflammatory responses, R(+)-verapamil appears to have significant potential in the treatment of chronic inflammatory neurological disorders.

Source:  http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3014428/