Ingredient profile
Caffeine in Sodaslim: How Much, What It Does and Who Should Skip It
Sodaslim prints 138 mg of caffeine anhydrous per capsule, and total caffeine is about 140 mg once the extracts are counted. That is close to one 12-ounce cup of brewed coffee and about a third of the 400 mg a day the FDA says healthy adults can usually have (FDA: How much caffeine is too much). Caffeine is the one ingredient with a measurable, small effect on calorie burn (NIH ODS: Weight-loss supplements (HP)).
Written by the Sodaslim editorial teamUpdated
The basics
What is caffeine anhydrous?
Caffeine anhydrous is caffeine with the water removed, sold as a fine white powder. "Anhydrous" simply means "without water".
It is the same caffeine molecule found in coffee and tea. The difference is form: a powder can be weighed exactly and packed into a capsule.
In Sodaslim, caffeine anhydrous is the largest single ingredient by weight. It sits beside green coffee bean extract and green tea extract, which bring small amounts of their own caffeine.
| Label name | Caffeine Anhydrous |
|---|---|
| What it is | Dehydrated caffeine powder · Stimulant |
| Position on the label | Printed with its own amount |
| Amount per serving (1 capsule) | 138 mg, printed |
| Amount used in research | 100 mg raised calorie burn by about 9 kcal an hour; limit 400 mg a day for healthy adults |
| Strength of evidence | Small effect; tolerance builds |
| Why it is used | A stimulant; about the caffeine in a cup of coffee |
| Main caution | Jitters, fast heartbeat, poor sleep; count coffee, tea, soda and energy drinks too. |
Cup count
How does Sodaslim's caffeine compare with coffee, tea and soda?
One capsule is about one cup of brewed coffee. The FDA's own figures put a 12-ounce brewed coffee at 113 to 247 mg (FDA: How much caffeine is too much).
| Source | Caffeine | Share of 400 mg a day |
|---|---|---|
| One Sodaslim capsule | About 140 mg | Roughly 35% |
| Brewed coffee, 12 oz | 113 to 247 mg | 28% to 62% |
| Energy drink, 12 oz | 41 to 246 mg | 10% to 62% |
| Soft drink, 12 oz | 23 to 83 mg | 6% to 21% |
| Black tea, 12 oz | 71 mg | 18% |
| Green tea, 12 oz | 37 mg | 9% |
The label prints 138 mg from caffeine anhydrous. Green tea extract adds under 4 mg, and green coffee adds an amount the label does not state. So the true total is about 140 mg, not an exact figure.
At a glance
Sodaslim's caffeine in five numbers
Evidence
Does caffeine help with weight loss?
A little, at best. The NIH Office of Dietary Supplements reports that 100 mg of caffeine raised energy use by about 9 calories an hour for three or more hours (NIH ODS: Weight-loss supplements (HP)).
That adds up to a few dozen calories on a good day, and the body adapts: the NIH consumer fact sheet says tolerance develops with regular use (NIH ODS: Weight-loss supplements (consumer)).
Caffeine "might help you lose a little weight", in the NIH's words (NIH ODS: Weight-loss supplements (consumer)). Weight-loss trials have tested it only as part of combinations, not alone (NIH ODS: Weight-loss supplements (HP)). Nobody has published a trial of the Sodaslim formula.
Caffeine is the one Sodaslim ingredient with a measurable effect. The effect is small, it fades, and the same caffeine is in a cup of coffee.
Timing
When should you take Sodaslim's caffeine to protect sleep?
In the morning. The label says only "take one (1) capsule daily", and the sales page suggests the morning. Caffeine's half-life in adults is about 5 hours, so half of it is still active 5 hours later (StatPearls: Caffeine).
- Morning, about 8 am
1 capsule with water. The label gives no time; the sales page suggests mornings, and caffeine lasts about 5 hours.
- Caffeine cut-off, about 2 pm
Skip later coffee, tea, soda and energy drinks so sleep is not disturbed.
- Count every cup
One capsule is about one cup of coffee. Healthy adults stay under 400 mg of caffeine a day from all sources.
- Night, 11 pm to 7 am
Poor sleep is the first sign that total caffeine is too high.
Caffeine limit (FDA: How much caffeine is too much); how long caffeine lasts (StatPearls: Caffeine); steady weight loss (CDC: Steps for losing weight).
The half-life can stretch to 15 hours in late pregnancy and runs longer in liver disease, StatPearls notes (StatPearls: Caffeine). MedlinePlus says caffeine peaks about an hour after you take it and lasts 4 to 6 hours (MedlinePlus: Caffeine).
Safety
What are the signs of too much caffeine from Sodaslim?
Jitters, a fast heartbeat and poor sleep come first. The FDA lists insomnia, anxiety, a fast heart rate, upset stomach, headache and a jittery feeling (FDA: How much caffeine is too much).
Mild signs
Restlessness, shakiness, headache, dizziness and needing to urinate more often (MedlinePlus: Caffeine) (Mayo Clinic: Caffeine limits).
Sleep trouble
Lying awake or waking at night is the first hint that your daily total is too high.
Serious signs
Chest pain, a racing or irregular heartbeat, or fainting needs a doctor right away.
Rapid intake of about 1,200 mg can cause seizures, the FDA warns (FDA: How much caffeine is too much). That is about nine Sodaslim capsules at once, which is why the label says "Do not exceed recommended dose."
Who should skip it
Who should avoid the caffeine in Sodaslim?
Anyone under 18 and anyone pregnant or nursing, per the label. The American College of Obstetricians and Gynecologists advises under 200 mg a day in pregnancy (ACOG: Caffeine in pregnancy).
- People with a heart rhythm problem, high blood pressure, anxiety, insomnia, acid reflux or migraines should ask a provider first (MedlinePlus: Caffeine).
- Caffeine may worsen some seizure disorders, says Mayo Clinic (Mayo Clinic: Caffeine limits).
- Never combine it with medicines that contain ephedrine (Mayo Clinic: Caffeine limits).
- Caffeine interacts with certain antibiotics, asthma medicines and heart medicines (MedlinePlus: Caffeine); StatPearls flags tizanidine and bupropion (StatPearls: Caffeine).
Show the label to your pharmacist if you take any regular medicine. The Sodaslim side effects page covers the other four ingredients.
Context
Is caffeine anhydrous in a capsule the same as pure caffeine powder?
The substance is the same, but the risk is not. The FDA warns that bulk pure or highly concentrated caffeine powders are a serious public health threat, linked to at least two U.S. deaths (FDA: Highly concentrated caffeine guidance).
The danger with bulk powder is measuring a dose by hand: less than half a teaspoon can hold about 1,200 mg (FDA: How much caffeine is too much). A pre-measured 138 mg capsule removes that guesswork. The risk that remains is stacking: a capsule on top of several coffees, energy drinks or a pre-workout.
Our view
Is the caffeine in Sodaslim worth paying for?
It does what caffeine does, at a moderate dose. It is also the cheapest part of the formula to get elsewhere.
Pros
- Exact amount printed: 138 mg
- Moderate dose, about one cup of coffee
- Small, real effect on calorie burn
Cons
- Effect fades as tolerance builds
- Easy to stack with coffee and soda
- Total caffeine is not printed as one figure
Our caffeine guide helps you add up a full day.
FAQ
Caffeine in Sodaslim: common questions
How much caffeine is in Sodaslim compared with a cup of coffee?
About the same. One capsule has about 140 mg of caffeine in total, and a 12-ounce brewed coffee has 113 to 247 mg, according to the FDA (FDA: How much caffeine is too much). The label prints 138 mg of caffeine anhydrous; the extracts add a few milligrams more.
What does caffeine anhydrous do in Sodaslim?
It is the stimulant, and the one ingredient with a measurable effect. The NIH reports that 100 mg raised calorie burn by about 9 calories an hour (NIH ODS: Weight-loss supplements (HP)), and tolerance builds with regular use (NIH ODS: Weight-loss supplements (consumer)).
What is caffeine anhydrous, and is it safe?
Caffeine anhydrous is dried caffeine powder, the same molecule as in coffee. In a pre-measured 138 mg capsule it is a moderate dose. The FDA's warnings target bulk pure powders, where measuring by hand can lead to dangerous amounts (FDA: Highly concentrated caffeine guidance).
How long does the caffeine in Sodaslim last?
Caffeine's half-life in adults is about 5 hours, StatPearls says, so half is still active 5 hours after the capsule (StatPearls: Caffeine). Effects peak at about 1 hour and last 4 to 6 hours (MedlinePlus: Caffeine). A morning dose protects sleep.
Does the caffeine anhydrous in Sodaslim affect sleep?
It can if you take it late or add other caffeine. With a 5-hour half-life (StatPearls: Caffeine), an afternoon capsule may still be active at bedtime. Take it in the morning and skip caffeine after early afternoon.
Is it safe to double up on Sodaslim's caffeine anhydrous?
No. The label says take one capsule daily and "Do not exceed recommended dose." Two capsules would give about 280 mg of caffeine before any coffee or tea, leaving little room under the FDA's 400 mg daily figure (FDA: How much caffeine is too much).
Does the caffeine in Sodaslim interact with medicines?
It can. MedlinePlus lists stimulants, certain antibiotics, asthma medicines and heart medicines (MedlinePlus: Caffeine), and StatPearls flags tizanidine and bupropion (StatPearls: Caffeine). The label asks anyone on medication to consult a physician first.
Who wrote this
Written and reviewed by
Plain-language pages built from the bottle label, the order page and linked public health sources such as NIH, FDA and CDC.
Last updated . Read our editorial standards and how we check reviews. This website is run by a U.S. retail desk for Sodaslim, not by the manufacturer. We earn money when you buy through our order links.
Keep reading
More about Sodaslim
Caffeine in Sodaslim
About 140 mg per capsule: how Sodaslim compares with coffee, tea and soda, and how to keep your daily total in range.
Read more
Caffeine guide
One capsule against coffee, tea, soda and energy drinks, the 400 mg limit, interactions and how to cut back.
Read more
Side effects
Caffeine effects, medicine interactions, the rare liver signs to know and a quick check before you start.
Read moreLicensed U.S. retail desk for Sodaslim
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