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This level of pressure is not high enough to cause headache or giddiness..
Coenzyme could not account for it...
You have not stated your personal habits, family history or co-morbidities
You need physical examination and investigation...EKG / HOLTER (24 to 48 hour ambulatory monitoring) / ECHOcardiogram
/ TMT (Treadmill exercise ECG) / MRI
/ LABORATORY work-up – may all be necessary for further assessment and assistance.
The treating doctor may suggest them depending on need, based on his assessment of the situation.
Wishing speedy recovery