Have you ever had this feeling before?
Any other symptoms?
Any underlying or known health issues?
Are you taking with food?
Are you on an ultra low carb or keto diet?
My guess is hypoglycemia. CAn cause cardiac like symptoms like palpitations if it gets out of hand.
Can try taking with food.
Or just stop if it persists. Can send back for refund. No worries.
Generally speaking, and coming from someone who has had a cardiac arrest
There are usually more signs than just a dull pain. Generally again, sharp pain not dull, usually spreads to arm, jaw or back and will be associated with sweating dizziness and severe gastro issues.
Hypoglycemia can mimic some of these symptoms and LOTS of people experience hypo with VEctor and Follidrone.
We would expect Vector to be cardio protective if anything.