Melatonin is a hormone that is present in the body naturally. The amount of this hormone present in the blood at any given point in time differs based on various factors. This hormone plays a key role in the circadian rhythm and therefore regulates various significant body functions. The hormone is produced by the pineal gland and is the production is dependent on the amount of light. The production is stimulated by darkness and is stopped when there is light. Typically the amount of this hormone that is produced during the first half of the night is larger and the production tapers off as the night proceeds. Other than treating the mundane symptoms that are caused by long international travel, this hormone has also been used in the treatment of cancer, immune system disorders, depression, seasonal affective disorder and even cardio-vascular conditions. If you have issues pertaining to your circadian rhythm, whether due to a long flight or otherwise, there is a fair amount of contribution that this hormone can make. Natural methods involve using the light box to reduce the generation of the hormone and using dark glasses or remaining a dark room for an extended period of time. Sometimes the hormone may be injected too.

While there are many people who use the hormone while traveling across time zones, the injection of this hormone can also have side effects. Melatonin effects include headache, nausea, vivid dreams, cramps and dizziness. Sometimes you may also get nightmares and even depression. If used excessively, it can kill the sex drive.

Due to the melatonin side effects, it is not recommended that the hormone be used frequently. The use of this hormone is prohibited without the consultation of a physician so that you know what you are getting into. The fact of the matter is that you need to really read this to use it.

The melatonin dosage that you need to use in case you have no other option depends on the length of the flight that you have. It also depends on your height, age and health condition. It is also imperative that you speak to a doctor and check whether this interferes with any medicines you are taking.

Sometimes using this hormone for jet lag may be something that is not required at all. All you may really need to do is to walk around in the flight and have loads of water all along. Alcohol and caffeine are a bad idea during the flight especially if you have issues.

The treatment options that you have are also large today. One should try and choose the natural options so that there are no side effects that need to be attended to later. And to this effect while the light box that is used for natural stimulation is fine, but injections for melatonin may be a step too far.