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For vitamin C, a daily dose of 500mg to 1,000mg is common for active adults

Resting-state functional MRI (rs-fMRI) Functional MRI data were recorded using a Bruker BioSpec 9.4 T scanner, equipped with an 86-mm volume coil for transmitting, and a 4-channel phased array cryogenic mouse head coil (Bruker, Ettingen, Germany) for receiving

The dosage of berberine ranged from 300 to 1500 mg a day, and in some studies other drugs were also used

[16] Additionally, PCOS is associated with increased cardiovascular risk factors including dyslipidaemia, hypertension, and endothelial dysfunction

Do not stop metoprolol suddenly unless a clinician tells you to, because abrupt withdrawal can worsen angina or increase heart-related risk in some people