Glaucoma is a group of eye conditions in which fluid builds up in your eye causing gradual vision loss. Ocular migraine Ocular migraine usually refers to a type of migraine that can cause temporary blindness in one eye.
Increased Blood Pressure. The combination of caffeine and ephedrine can increase your blood pressure. Ephedrine and caffeine stimulate your sympathetic nervous system by increasing neurotransmitters, such as norepinephrine. This stimulant effect can increase your blood pressure by constricting your blood vessels. This is why many diet pill formulas, often called an ECA stack, contain ephedrine, caffeine and aspirin to thin your blood to offset the blood vessel constriction.
Sure, it's in coffee, but it's also in nutrition supplements on quick dissolve strips and energy shots. And it's no wonder why, caffeine has been shown to boost energy levels, alertness and endurance. Trouble is, it's possible to consume too much caffeine and even abuse this stimulant. The Risk. Caffeine can cause nervousness, jitters and an irregular heartbeat in people sensitive to this stimulant or for those who are consuming it in large amounts.