Given orally and pass through the GI tract to be absorbed into the bloodstream and metabolized by the liver. This includes oral, naso-gastric, and rectal routes.

Tablets are available in fast acting, slow release, controlled release, enteric coated, film coated, sublingual, chewable and other formulations. Not all tablets are swallowed. Sublingual (SL) tablets are placed under the tongue, wafers are placed on the tongue and BUCCAL tablets are placed between the cheek and the gum.

To form a Capsule the drug is contained in a cylindrically shaped shell, which breaks open and the drug is released. This includes gelatin capsules. 

A Caplet is an ovel-shaped tablet

The drug is mixed with, but not completely dissolved into a liquid. It needs to be shaken before administration in order to suspend the drug particles evenly.

An Emulsion is a suspension involving one liquid in a second liquid with which the first will not mix (ex. oil in water or water in oil).

Drugs which are in a powder form and are usually dissolved in juice or water before administration

Lozenges and Troches are meant to be dissolved slowly in the mouth and generally have a local effect.

Solid or semi-solid bullet shaped dosage forms. They melt at body temperature, dispersing the medication.

A medicated adhesvie patch applied directly on the skin to deliver a specific dosage of a drug. They have systematic effects and should be rotated to different sites on the body.

Inhaled through the mouth or nose and usually act directly on the respiratory system before entering into the bloodstream. They are often used to treat respiratory diseases, but gases are inhaled for general anesthisia as well.

Injected into the vein. This allows for immediate adsorption. Intravenous includes IV push, IV piggyback and IV infusion or drip.