Which I think is perhaps 7 times or more what most people on this forum are taking, and might explain your results. Now that I have a 500 ml bottle of olive oil with about 1g/ml C60, I'll try a dose like that too. I have yet to notice anything at all from C60.These posts are interesting and completely contrary to my experience.
All I experience from taking about 7 mg a day, every day are good things
So far, the reports of tiredness have come from 2 people taking very large doses (Anthony at 130 mg, xtronic at the rat dose (1.7mg/kg) scaled by 1/6, which would come out to 20 mg for a 70 kg person) and from 3 people taking smaller doses- sunshinefrost at 1.5-3 mg daily, Turnbuckle at various dosages, and me at 1.5-2.5 mg. Turnbuckle notes an association with continuous dosing. At this point, there doesn't seem to be much of a dose dependence to this side effect.
And once again, I have the opposite experience - I'm just weighing in. C60 has improved my overall energy and that hasn't changed since I started taking it several months ago. I really like how 7 mg a day makes me feel. No if's ands or buts.