How long do these "gel" pills take to "digest"?

[Em3]

Just to give an idea what I'm trying to figure out here.

I've read when you ingest caffeine that it takes approximately 45 minutes for 99% of it to enter the bloodstream.

Now what I'm curious to know is if one were to take say, a caffeine pill, how long would it take simply for the outside pill "coating" to dissolve to then allow the caffeine to begin to enter the bloodstream?

Hopefully I worded this correctly.

 

[HellAtlantic]

I’ve never heard about the 45 min thing about caffeine. I think when one drinks coffee the “awakening” effects happen rapidly. Unless it’s placebo (“I just drank coffee therefore I’m going to be more awake and alert”).

 

[carguy123]

The various coatings (depending upon the pill) take about 15-20 minutes on average to fully dissolve once it hits the stomach.

 

[AntM1564]

I’ve never heard about the 45 min thing about caffeine. I think when one drinks coffee the “awakening” effects happen rapidly. Unless it’s placebo (“I just drank coffee therefore I’m going to be more awake and alert”).

Depending on the source of caffeine, the time it kicks in will differ.

 

[RiseAbove]

Got this info from Govitor's site (no affiliation with me):

You might feel drowsy and incapable of functioning at a high level until the caffeine hits your bloodstream. You may go from 0 to 60 in about 10 minutes, but you hit top speed after about 45 minutes, when 99 percent of the caffeine from your coffee, tea or energy drink has entered the bloodstream fully. Then it takes many hours for the caffeine to dissipate.

These findings were reached by researchers from the University of Barcelona in a study published in December 2008 in the journal Progress in Neuro-Psychopharmacology and Biological Psychiatry. The journal article is not available without paying a fee.

The 10-minute finding contradicted previous studies that showed alertness does not increase until after 30 or 45 minutes, says an articlein Science Daily about the research article.

“Forty-five minutes is the time needed for maximum caffeine concentration to be reached in the blood, but levels reach half this concentration after just a few minutes,” Science Daily reports.

To measure caffeine’s effects on the human body, the researchers analyzed 668 university students, 238 of them male. Their average age was 22. They sampled the levels of caffeine in their blood at 10, 20 and 30 minutes. They took the measurements two times during the day after the students drank coffee, at midday and in the late afternoon, to serve as a control if there were possible differences caused by time of day.