What does the evidence show for CBG and blood pressure?
Through potent α2-adrenoceptor agonism, CBG may influence blood pressure and heart rate; magnitude and clinical relevance in humans are uncharacterized. Basis of the consumer blood-pressure safety note.
The grade weighs the claim as a whole, across every study our registry holds on the question. How good any one of those papers is remains a separate matter, and you can judge each on its own terms.