If you need eye drops for dry eyes â known as artificial tears â choose a brand without the preservative benzalkonium chloride, which can cause irritation, says Andrew Lotery, professor of ophthalmology at the University of Southampton. âYou tend to find it in eye drops that come in bottles,â he says.
Endorphins are natural opium-like hormones that are produced by the pituitary gland and the hypothalamus of your body. Endorphins act on your brain's opiate receptors to block their ability to receive pain messages from the sensory nerves. This makes you less sensitive to pain. Endorphins also work on your emotions.
Beta-endorphins can enhance a person's mood and create feelings of relaxation. Beta-endorphins are substances created by the pituitary gland. Yoga and other exercise spurs the pituitary gland to create more endorphins, the body's natural pain medication. B-endorphins circulate around the spinal cord.