This chest tightness is so uncomfortable it's reducing my quality of life severely.
Before I started to supplement comprehensively 10 years ago always got tightness and stabbing pain in my chest with any type of stress (mental or physical). Then with comprehensive supplementation to my complete surprise found that at least 160 mg of Ubiqunone (half of that with Ubiqunol) would cease these severe chest pains. Still holds true now, with the only difference that now I only have to drop with the dose - and without apparent stress - the pains are back. But haven't found even 1 person with that same experience till now, though.