Methamphetamine
If methamphetamine is eaten, it gets absorbed into the body from the digestive system. Although the effects take longer to be felt when compared to other routes of administration (between fifteen and forty five minutes), they tend to outlast the highs achieved through smoking, injecting, and snorting. The onset is comparatively gentler, but can cause gastrointestinal problems for the user and is not considered one hundred percent safe. The body naturally filters out some toxins when methamphetamine is ingested orally, but due to the potency of the drug, addiction is still a strong risk factor.