Sentence: The aim of the present study was to determine whether a combination of atorvastatin and amlodipine causes sympathoinhibition via reduction of oxidative stress in the RVLM and improves cognitive dysfunction of hypertensive rats .
Drug combination annotation:
[{'class': 'POS', 'spans': ['atorvastatin', 'amlodipine'], 'is_context_needed': True}]