Consumption Methods:

Inhalation:
Traditionally the most common use is smoking the cured plant material, although
now Cannabis experts discourage this because of the potentially damaging effect to
one's lungs. A healthier alternative is to use a vaporizer. This works by releasing the
desired compound of the plant by exposing it to a temperature lower than that
required to burn the plant material. This reduces a patient's exposure to toxins such
as tar, carbon monoxide and the aromatic hydrocarbons found in marijuana smoke.
Side effects such as coughing, phlegm and tightness in the chest were much less
severe in patients who used a vaporizer instead of smoking their medication.

Tinctures:
A tincture is a concentrated extract that can be made with alcohol, oil or glycerin.
They are taken orally by placing drops under the tongue and it is a very effective and
discreet way to deliver medication quickly to the blood stream.

Edibles:
THC can be extracted from the plant material and absorbed into oil or butter for
cooking. There is an incredible variety of ways to then prepare your medication. From
perishables to more durable hard candies, this is a great option for many patients.
Because the liver is processing the THC after digestion our body creates a compound
called 11-hydroxy-THC. This compound is thought to be 4-5 times more potent than
regular TNC. This is why edibles are known to be more potent when compared to
inhaled cannabis. The effects of the medication when consumed in this form come on
much slower and last a great deal longer.
Because of this it is easy to take more than you intend and caution should be used
when working out your desired dosage.

Topical:
The medication can be delivered through a balm, lotion, ointment or rubbing alcohol
solution. These preparations provide only localized relief and do not have any effect
on the brain.

Information in this section gathered from Marijuana Medicine by Christian Ratsch.