An energy drink for a calorie deficit
Zero calories, zero sugar, a caffeine dose you can repeat daily, and an ingredient that helps with appetite. Calla is built on all four, with Micro GLP-1 studied to lower energy intake 17.5%.
Why the deficit is the hard part
A calorie deficit is simple arithmetic and a difficult habit. The arithmetic is eating less than you burn. The habit fails for one reason almost every time: appetite. An energy drink cannot do the arithmetic for you, but the right one helps with the habit, and the wrong one quietly works against it.
Four things to check
- Calories: zero. This is the floor. A 10-calorie can is fine. A 140-calorie bottle is a snack.
- Sugar: zero. Sugar in a drink produces a spike and a crash, and the crash sends you to the kitchen.
- Caffeine: a dose you can repeat daily. 100 to 200 mg is the range most adults can hold every day without sleep paying for it. The jump from 150 mg to 300 mg adds jitters more reliably than it adds anything else.
- Something for appetite. Caffeine alone does little for hunger beyond the first hour. Look for an ingredient with human data on energy intake.
What caffeine does, and does not do
Caffeine raises resting energy expenditure modestly. A 2020 review in the Journal of the International Society of Sports Nutrition put the effect at around 4%. For most people that is 50 to 80 calories a day, real but small. Its effect on appetite is short. The honest case for caffeine in a deficit is that it keeps training and work quality up when you are eating less, which is the thing that usually slips first.
The appetite side
This is where a GLP-1 energy drink earns its name. Calla uses CQR-300, a standardized extract of Cissus quadrangularis, at the dose a 16-week randomized, placebo-controlled trial studied: 300 mg a day. In that trial, active GLP-1 rose 321%, energy intake fell 17.5%, about 514 fewer calories a day, and body fat fell 10.9%, all versus placebo.¹ A deficit you do not have to fight is a deficit you can keep. The science is on the Micro GLP-1 page.
Timing
Morning, or thirty minutes before training. Not after mid-afternoon, because sleep is the other half of appetite control. Once a day, every day: the trial dosed daily for 16 weeks, and the energy and the appetite effect are not the same timescale. The energy is immediate. The rest builds.
A routine that holds
- One stick of Calla in water, same time each day.
- A protein-first breakfast within a couple of hours.
- A short walk after the largest meal.
- Water instead of anything sweet between meals.
- Lights out seven hours before the alarm.
None of this is dramatic. That is why it works. More on food noise and on raising GLP-1 naturally.
Calla by the numbers
| Caffeine | 150 mg |
|---|---|
| L-theanine | 200 mg |
| Taurine | 1 g |
| Vitamin B6 | 2 mg |
| Vitamin B12 | 6 mcg |
| Micro GLP-1 (CQR-300) | 300 mg |
| Calories | 0 |
| Sugar | 0 g |
| Format | Powder stick, stirred into water |
¹ Medicina 62(1):41, 2026. Randomized, placebo-controlled, 16 weeks, 248 adults, 300 mg CQR-300 per day. A study of the ingredient, not of Calla. Caffeine and energy expenditure: Clark et al., JISSN, 2020. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.