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Study Up Energy was designed to be the most advanced caffeine-based system on the market.  Something that is organic and naturally sourced, free of artificial flavors, colors, or preservatives.  We wanted to include only the most key vitamins and nutrients that have withstood the test of time yet are widely unappreciated.  Things like vitamin C which is thought of as immune-system protecting but is critical in nerve cell functioning, heart health, and more.  We included vitamin D which is involved in almost every aspect of mental and physical functioning and is quite possibly the most important of all of the vitamins.  The rest of the formula is B-complex vitamins which are the important vitamins in energy metabolism, ginkgo biloba which has been used safely in traditional Chinese medicine for thousands of years.  

How much coffee is one tablet equivalent to?

There is 240 mg of caffeine in Study Up-- how much coffee is that?  
That is roughly equivalent to 12 ounces of brewed coffee; for example, a Starbucks Pikes Roast averaged 235 mg but this can vary significantly even at the same coffee shop with the same people making it.  A 12 ounce blonde roast is about 270 mg caffeine and a 12 ounce dark roast is about 195 mg.  Caffeine levels in coffee will vary significantly no matter what you order and where you go.  Caribou coffee has some surprisingly high caffeine content.  Their  “Depth Charge” has a huge dose of 445 mg of caffeine in a large.  Their 'Iced Americano' has 450 mg. These are high numbers for a single drink and would result in negative side effects for most people unless this was spread out for many hours.  This dose could even be dangerous for some people.  

What are the desired and the undesired effects of caffeine?  

At the right dose which is specific to each individual based on their body size and composition, tolerance, genetics, and many other factors, caffeine enhances both physical performance and mental alertness.  
People refer to this ideal dose for an individual as 'moderation.'  Above this dose is where side effects like anxiety, nervousness, sleeplessness, and sweating attacks are likely to occur. Precise dosing is the key to optimum enhancement effects.

How fast does the body absorb caffeine and how fast is the elimination?

Caffeine in immediate-release form is absorbed rapidly and completely by the body. The stimulating effects of caffeine usually occur 15 to 30 minutes after consumption and last around 3-4 hours in most people.  If the dose is taken on a full stomach it will likely take a little longer to feel the effects and will usually result in a smoother experience than on an empty stomach. 
Caffeine has a half-life is about 4 hours in most people which means it takes about 20 hours to fully eliminate a dose.  With caffeine, the main effects don't last past the first half life but in a small percentage of people who are sensitive to caffeine they may not be able to sleep well for up to 20 hours after a dose.

How much caffeine is safe to take in a day?

Once again this dose is very individual-specific but there are some good numbers that apply to the generally healthy adult population.  The critical number appears to be about 500 mg per day for men and around 300 mg per day for women. Approaching these doses over an extended period of time is associated with many health benefits.  The following studies suggest a rough idea of where benefits may take place:  for men in the Health Professionals follow-up Study, a statistically significant 17% decreased risk of type 2 diabetes was associated with >417 mg/day of caffeine; whereas, for women in the Nursing Health Study, significance for 30% decreased risk was reached at 258 mg/day caffeine.

What is the lethal dose of caffeine?  How much coffee do you have to drink to overdose?  

'Everything is a poison-- the dose determines poison'--Paracelsus. The lethal dose of caffeine is roughly 150 mg/kg of body weight.  That is around 10 grams of caffeine and to put that in to some context, the lethal dose of water is about 6 liters in a very short time.  In order to get to the toxic level of caffeine by drinking average coffee you would have to drink over 28 liters.  This means that the water would kill you nearly 5 times over before the caffeine got you.  Additionally, caffeine would give you some bonus diuresis effect as you guzzled coffee with would most likely make your lethal dose a little higher than if caffeine weren't in the system.    One of the problems with caffeine not being regulated is that you can buy the pure powder.  Without a digital scale and some guidance this is dangerous and there have been many glorified news reports about how dangerous 'caffeine' is and that is partly why people have a bad feeling about 'caffeine' yet a warm cozy feeling about 'coffee' which is something worth thinking about.

How long does shipping take in the US? 

Shipping is USPS and generally takes 2 days.

Reference:

Beveragedaily.com. “Bai Brands under Fire over 'Antioxidant-Packed' Claims as Judge Allows False Advertising Lawsuit to Proceed.” Beveragedaily.com, 11 Aug. 2015, www.beveragedaily.com/Article/2015/08/12/Bai-Brands-under-fire-over-antioxidant-packed-claims.

Caffeine Informer, www.caffeineinformer.com/. “Espresso.” Caffeine Informer, www.caffeineinformer.com/caffeine-content/espresso

D'Costa, Krystal. “The Culture of Coffee Drinkers.” Scientific American Blog Network, 11 Aug. 2011, blogs.scientificamerican.com/anthropology-in-practice/the-culture-of-coffee-drinkers/.

Health Professionals Follow-Up Study, sites.sph.harvard.edu/hpfs/.

“Higher Yogurt Intake Linked to Lower Cardiovascular Disease Risk among Hypertensive Adults.” Nurses' Health Study |, 2 Mar. 2018, www.nurseshealthstudy.org/.    

“The Dark Side of Coffee: an Unequal Social and Environmental Exchange.” SciTech Connect, 31 Aug. 2015, scitechconnect.elsevier.com/dark-side-coffee-social-environmental/.

Welch, Ashley. “When Caffeine Becomes Deadly: How Much Is Too Much?” CBS News, CBS Interactive, 17 May 2017, www.cbsnews.com/news/when-caffeine-becomes-deadly-how-much-is-too-much/.