I have epilepsy, i would like to take maca, concerns? 12 years seizure free. i handle stimulants well like caffeine, guarana.

Depends: Maca is not a stimulant and there have not been any information about it lowering the seizure threshold. It has an affect on the hypothalamic system and hormonal balance (thus some use it for menopausal symptoms). If you have no endocrine problems (ex: low thyroid) it is probably safe for you and may even help with seizure control due to better sleep quality.