Origin. Bart Allen was born to Don Allen, the son of Barry Allen, the second Flash, and his wife Meloni, the daughter of President Thawne of Earth and descendant of the evil Professor Zoom and Cobalt Blue in the late 30th century. Bart was born with his grandfather's speed.
Collagen supplements don't do anything for building collagen in your skin, and although any medication or supplement you take can potentially cause an allergic reaction, it is also possible that the cause of your chest pain is from something completely different. Please see your regular doctor as soon as possible.
Your body produces its own collagen in abundance to make your skin, bones, hair, nails, muscles, and all your organs, but you wind up producing less and less as you get older. This is the cause of the signs of aging. Hydrolyzed collagen supplements actually help stimulate this collagen growth to healthy levels.