Caffeine is the most widely used legal stimulant in the world. On a daily basis, 80 percent of Americans ingest some form of caffeine. The average adult consumption is about two cups of coffee per day.9


Caffeine Content (approximate)

Coffee, brewed (drip)

60-180 mg per 8-oz cup

Coffee, instant

30-120 mg per 8-oz cup

Coffee, decaffeinated

2-5 mg per 8-oz cup

Tea, iced

67-76 mg per 12-oz cup

Chocolate milk

2-7 mg per 8-oz cup

Milk chocolate (Hershey's)

10 mg per 1.5 oz


71 mg per 12 oz


46 mg per 12 oz

Mountain Dew

54 mg per 12 oz

7-Up, ginger ale, most root beers

0 mg per 12 oz

Figure 3.4 Users often ingest ice by smoking it in a glass pipe. © Tim Wright/AP Images

more harmful and more addicting over time. In addition, an addictive cycle is generated as the user seeks to re-experience that initial short-lived rush by taking meth with greater doses and frequency.

Eating and Snorting

Oral and intranasal meth use produces a long-lasting euphoria—a high—but not an intense rush. This high can last anywhere from 6 to 12 hours. It takes more time for the high to take effect as well, about three to five minutes for snorting and about 15 to 20 minutes for oral ingestion. Snorting crystalline meth powder is also called railing, and with long-term use can damage the inside of the nose or cause infection. Users of low doses of meth taken orally obtain effects within 30 to 60 minutes. The euphoric effects are less intense after eating or snorting meth, and require more time to take effect, because the drug first has to go through the digestive process before it hits the bloodstream to be carried to the central nervous system.2, 7 9

Continue reading here: How does methamphetamine get out of the body?

Was this article helpful?

0 0