Earwax or even a piece of hair could be lying on top of the eardrum and when the eardrum vibrates, it may cause funny noises (just like a piece of string on a lightly beating drum). Obviously, treatment is by removal. Eustachian Tube Dysfunction can also cause crackling/popping noises.
Adverse Reactions to Elemental Iron Supplements Meeting your daily iron recommendation is important, and you may have to take supplements to get what you need. Iron's primary function is carrying oxygen through your blood and delivering it to cells, tissues and all of your organs.
ACTIONS/CLINICAL PHARMACOLOGY. HIGH ELEMENTAL IRON CONTENT: Ferrous fumarate, used in Hematogenâ¢ Capsules, is an organic iron complex which has the highest elemental iron content of any hematinic salt-33%. This compares with 20% for ferrous sulfate (heptahydrate) and 13% for ferrous gluconate. Hematogenâ¢ contains 66 mg of elemental iron.