This is the brand and quantity I will be using.
In this experiment, I will be taking 200 mg of coenzyme Q10 daily to see whether it has any noticeable effects.
CoQ10, often touted as a heart health supplement, is present in most human cells and is responsible for the production of the body's own energy. It is a potent free radical scavenger and has been reported to lower blood pressure in patients with hypertension. In rats it has been shown to protect from age-related DNA double-strand breaks and increase lifespan when combined with a diet rich in polyunsaturated fatty acids. Unfortunately, there is no mention in the study whether CoQ10 is effective in other kinds of diets as well.
The 200 mg capsule from Natrol is the strongest form I could find on eBay. I haven't come across any adverse effects from taking that amount daily, so that's what I'm going for. One bottle has 45 gel capsules, and I've got two bottles, so if everything goes smoothly, this experiment should last about four months (this includes the days I forget or am unable to take a capsule for some reason).
For more information on coenzyme Q10, see these posts:
Coenzyme Q10 for Energy & General Health - Results after One Week
Coenzyme Q10, Exercise and Oxidative Stress
The Role of Coenzyme Q10 in Oral Health
How to Choose Between Different Forms of Coenzyme Q10: Ubiquinone vs. Ubiquinol