WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
The h/h blood group, also known as Oh or the Bombay blood group, is a rare blood type.This blood phenotype was first discovered in Bombay, now known as Mumbai, in India, by Dr. Y. M. Bhende in 1952.iosynthesis of the H and A and B antigens involves a series of enzymes (glycosyl transferases) that transfer monosaccharides. The resulting antigens are oligosaccharide chains, which are attached to lipids and proteins that are anchored in the red blood cell membrane.
Hereditary hemochromatosis (HH) is the most common form of iron overload syndromes, i.e. diseases in which too much iron builds up in oneâs body. This extra iron is toxic to the body and can damage organs, lead to illness or even death.here are three types of iron overload syndromes: 1  Hereditary hemochromatosis (HH) In this inherited disease, the genes that control the absorption of iron from the intestine are abnormal. 2  This causes the intestine to absorb more iron than the body needs.