In some cases, a fever can be life-threatening. This is often seen in people with poor immune systems, certain types of meningitis, and severe abdominal pain. Pneumonia with fever can be life threatening in an older person. Any infection in which the source is not found can continue to get worse and become very dangerous. Severe hyperthermia can cause a coma , brain damage, or even death. Usually, if the cause of the fever is diagnosed quickly and treated appropriately, the prognosis is good, but the prognosis is poorer if there are diagnostic and treatment delays and organs become progressively damaged.
Testosterone can be administered parenterally , but it has more irregular prolonged absorption time and greater activity in muscle in enanthate , undecanoate , or cypionate ester form. These derivatives are hydrolyzed to release free testosterone at the site of injection; absorption rate (and thus injection schedule) varies among different esters, but medical injections are normally done anywhere between semi-weekly to once every 12 weeks. A more frequent schedule may be desirable in order to maintain a more constant level of hormone in the system.  Injectable steroids are typically administered into the muscle, not into the vein, to avoid sudden changes in the amount of the drug in the bloodstream. In addition, because estered testosterone is dissolved in oil, intravenous injection has the potential to cause a dangerous embolism (clot) in the bloodstream.
LC omega-3s are present in several dietary supplement formulations, including fish oil, krill oil, cod liver oil, and vegetarian products that contain algal oil. A typical fish oil supplement provides about 1,000 mg fish oil, containing 180 mg EPA and 120 mg DHA, but doses vary widely [ 30 ]. Cod liver oil supplements provide vitamin A and vitamin D in addition to LC omega-3s. Although seafood contains varying levels of methyl mercury (a toxic heavy metal) [ 31 ], omega-3 supplements have not been found to contain this contaminant because it is removed during processing and purification [ 32 ].