200 mg

5-hour Energy, Regular Strength, 1.93 fl oz (57 ml): 200 mg of caffeine, 50% of the 400 mg daily reference for healthy adults.

200 mg in under two fluid ounces. Volume tells you nothing about dose here.

Source: 5-hour Energy, Regular Strength FAQ, checked 18 September 2026.

How it compares

5-hour Energy, Regular Strength, 1.93 fl oz (57 ml) 200 mg
Brewed coffee, 8 fl oz (237 ml) 95 mg
Red Bull Energy Drink, 8.4 fl oz (250 ml) 80 mg
Daily limit for most healthy adults 400 mg

Coffee: USDA FoodData Central, coffee brewed with tap water. Red Bull: Red Bull product Q&A. Daily limit: the figure the FDA cites as not generally associated with negative effects in healthy adults.

How many can I have?

2 servings of this size fit under a 400 mg day (400 mg), using the whole allowance.

Based on 400 mg, the FDA figure for healthy adults.

Calculate my safe limit with 5-hour Energy, Regular Strength

The calculator sets a personal limit from your weight, age, pregnancy status and sensitivity, and this box uses it once you have saved it there.

Caffeine by size

Serving Caffeine Share of 400 mg
1.93 fl oz (57 ml) 200 mg 50%

A concentrated shot, not a sip of coffee

5-hour Energy Regular Strength is sold in a 1.93 oz bottle and contains 200 mg of caffeine. The small volume is the main safety issue: it can be consumed in seconds, delivers two small cups’ worth of caffeine, and gives none of the slow-drinking cues that a 12 oz coffee provides. The brand also makes an Extra Strength version with a higher dose, but this page refers to Regular Strength.

A single Regular Strength shot is half of the 400 mg daily reference the FDA cites for healthy adults. It is also equal to the 200 mg ceiling ACOG recommends during pregnancy, which means one shot uses the entire daily allowance for that group. If you take a shot in the afternoon, the caffeine is likely still in your system at bedtime because the average half-life is about five hours with a wide individual range.

Why shots lead to accidental overconsumption

Energy shots are easy to underestimate because the bottle is tiny. Unlike coffee, where you can gauge progress by the cup, a shot is gone in one gulp. Taking two Regular Strength shots reaches 400 mg by itself. Combining one shot with a coffee, tea or soda can push you over the daily ceiling without the volume making the total obvious.

The 200 mg per 1.93 oz is the highest caffeine concentration of any drink on the site. Use it only when you have already counted the rest of your day.

Source

The 200 mg figure is from the 5-hour Energy Regular Strength FAQ, checked 18 September 2026.

Similar drinks compared

Drink Serving Caffeine Per 100 ml
5-hour Energy, Regular Strength 1.93 fl oz (57 ml) 200 mg 351 mg
Alani Nu Energy Drink 12 fl oz (355 ml) 200 mg 56 mg
Celsius On-The-Go powder 1 packet 200 mg —
Celsius Energy Drink 12 fl oz (355 ml) 200 mg 56 mg
Monster Energy Original 16 fl oz (473 ml) 160 mg 34 mg

Default serving for each, from the source on its own page. Per 100 ml (per 100 g for solid food) shows strength independent of serving size.

Head-to-head comparisons

Common questions about 5-hour Energy, Regular Strength

How much caffeine is in a 5-hour Energy shot?

Regular Strength has 200 mg in a 1.93 fl oz bottle, according to 5-hour Energy. The Extra Strength version has more; this page covers Regular Strength only.

5-hour Energy vs Red Bull: which has more caffeine?

5-hour Energy, by far: 200 mg in one small bottle against 80 mg in a standard 8.4 oz Red Bull, or two and a half cans' worth.

Is a 5-hour Energy stronger than a cup of coffee?

Yes, about two cups' worth in one swallow: 200 mg against 95 mg in an 8 oz cup of drip coffee at USDA's reference strength.

Can I take two 5-hour Energy shots in a day?

Two Regular Strength shots make 400 mg, the whole daily figure the FDA cites for healthy adults, before any coffee, tea or soda. One shot is already at the 200 mg EFSA assessed as a safe single dose, and uses all of the 200 mg daily ceiling ACOG uses in pregnancy.

Useful articles

Sources

Written by Ivan Ushakovsky, not reviewed by a clinician. Last updated .

Caffeine in other drinks