It is vital to note that getting a specialist instruction on any drug sought for medicinal use is a sure step to take in administering any ailment. The reason why this is of vital importance is the obvious fact that taking a drug of any kind in under dosage or overdose could be dangerous in a kind of way and so, one needs to get the proper recommendation right before getting the desired soughed effects of the drug or substance.

Route or Direction of drugs is a terminology to be considered when making drug administration. Thus it is an important factor which enhances the absorption of the drug in the body. The time in-between the drug administration and the start of the drug action itself is determined by the direction on which drugs had been instructed to be taken. This process can be called a Biological lag.

The biological lag is the period of time or interval the drug is taken stays until it takes its effects on the body of its host. During the lag interval, the drug condiments circulate in the bloodstream before it actually settles to work on the ailment in which it was taken for. There are mainly many two types of methods in which drugs can be administered and they include; the oral or enteral route method, parental route method.

Aside the oral method of drug administration, any other method of drug administration is known as the parenteral method. This includes a host of many other methods in which drugs could be administered to a patient. And this as well has a series of advantages which could somewhat be likened to the oral route method but as first said, this method does not employ the use of oral to its use. The advantages include; the absorption of the drug ingested is quick and produces the effect desired fast, the accuracy of the drug can be delivered to the patient, the drug quick acts on the body circulatory system and it is active, the parenteral method is good for emergency cases, this method is the best for unconscious patients and conscious patients as well.

Similarly, despite its usefulness and appealing advantage, the parenteral method also has its own disadvantages and they include; the parenteral method employs the use of syringe in its application and this could produce pain during administration, swelling of the body part injected is compulsory, sterilized methods is needed for injection, the parenteral method could be expensive at times, self-medication sometimes is impossible and other disadvantages.

One major method of the parenteral method is the use of injection. The injection involves the use of a syringe with the medicinal contents in its cylinder and injected it into the venous body parts of the patient. A type of this drug used by the injection is intradermal which is injected into the layer/folds of skin an example is B.C.G vaccine.

Another kind of way this injection is employed is through the use of the subcutaneous process. Through this method, nonirritant substance that can actually get injected by using this direction as well but, one disadvantage of the subcutaneous method is that it is slow and even thus, the effect is prolonged.

A third way in which this injection is used is for the intramuscular system. The injection is injected deep into the tissue of the muscles and in this process the rate of absorption is unchanging and the start of the effect desired is quick. A final system of using the injection is through the intravenous method. In this method, the drug is injected directly into the vein of the victim. The effect is quick and the drug circulates around the system quicker.