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.
Ferrous sulphate 300mg = 60mg elemental iron. Ferrous sulphate dried 200mg = 65mg elemental iron. The recommended dose of elemental iron for iron-deficiency anaemia is 100mg to 200mg daily. ie. 1 of either the above tablets 2 to three times a day.