Side effects
What Are the Common Fat Burner Effects, and When Do You Stop?
Fat burner effects most often come from caffeine and other stimulants. Jitters, a fast heartbeat, nausea, upset stomach and poor sleep are the usual ones. FDA says about 400 mg of caffeine a day is not generally linked to harm in healthy adults, and more can cause problems. Stop and ask a doctor if you feel unwell.
Written by the SodaBurn label deskUpdated · 4 min read
The usual suspects
What are the most common fat burner effects?
The most common fat burner effects are jitters, a racing or pounding heartbeat, nausea, an upset stomach, headache and trouble sleeping. Most trace back to caffeine.
FDA lists rapid heartbeat, high blood pressure, insomnia, anxiety, jitters, nausea and headache as warning signs of too much caffeine (FDA, How much caffeine is too much). Supplements can hide caffeine under names such as guarana, which is a seed that holds it (MSK, Guarana).
Not every product acts the same. The effects depend on which ingredients are inside and how much of each you take.
| Effect | Often linked to | What to do |
|---|---|---|
| Jitters, fast heartbeat | Caffeine, guarana | Stop. Call a doctor if it does not settle. |
| Poor sleep | Caffeine, ginseng | Take it earlier or stop. |
| Nausea, stomach pain | Guarana, cayenne, grape seed | Stop and ask a pharmacist. |
| Dark urine, yellow skin | Green tea extract (rare) | See a doctor right away. |
Where it comes from
Why do fat burners cause jitters, nausea and poor sleep?
Fat burners cause jitters, nausea and poor sleep mainly because they are stimulants. Caffeine speeds up the nervous system, and an empty stomach can make the nausea worse.
Guarana commonly brings nausea and insomnia, and high doses may cause vomiting, heart rhythm changes and high blood pressure (MSK, Guarana). Cayenne extract can bring sweating and stomach pain (MSK, Cayenne). Panax ginseng most often causes insomnia (NCCIH, Asian ginseng).
Green tea extract adds a rarer risk. Liver injury is uncommon but reported, mostly with extract in capsules and tablets (NCCIH, Green tea).
Check your medicines
Who is more likely to have fat burner effects?
People who take certain medicines, who are sensitive to caffeine or who have heart, liver, kidney or blood pressure problems are more likely to have problems. Ask a doctor or pharmacist before you start.
Keep taking prescribed medicine. Never stop or change it because of a supplement. Sleep, activity, meals and stress also change how you feel, so the sliders below are worth a look.
Adults need 7 or more hours of sleep and about 150 minutes of moderate activity a week.
Habits from (CDC, Steps for losing weight) and (NIDDK, Safe weight-loss programs). A self-check, not a test, and no supplement replaces these habits.
Chest pain, trouble breathing, fainting or a racing heartbeat that will not settle needs emergency care. Yellow skin or eyes, dark urine or pain under the right ribs means see a doctor right away.
SodaBurn: 2, 3 or 6 bottles1 fl oz (30 ml) a bottle · 1 dropperful a day · 60-day money-back guarantee
See packsOn this label
What could SodaBurn cause, going by its label?
No study of SodaBurn exists, so nobody can list its effects with certainty. Its label names two caffeine sources, guarana and green tea leaf extract, so the caffeine effects above could apply.
The blend total is 15.47 mg per 1 ml, with no amount printed for each name. By the label order, guarana weighs at most 3.87 mg and green tea at most 2.21 mg per 1 ml. FDA's 400 mg figure for caffeine is far higher, but the label does not print its caffeine content. The dropperful size is not in our material, so check your bottle. Read the side effects page and the proprietary blend guide before you decide. Adults 18 and older only.
SodaBurn: 2, 3 or 6 bottles1 fl oz (30 ml) a bottle · 1 dropperful a day · 60-day money-back guarantee
See packsFAQ
SodaBurn questions people ask
What are the side effects of fat burners?
The common ones are jitters, a fast heartbeat, nausea, stomach upset, headache and poor sleep, mostly from caffeine. Rare liver injury is reported with green tea extract. Stop and ask a doctor if you feel unwell.
Why do fat burners make me shaky?
Caffeine and similar stimulants speed up the nervous system, which can cause shakiness and jitters. FDA lists jitters and a rapid heartbeat as signs of too much caffeine. Stop the product and call a doctor if it persists.
Can fat burners affect sleep?
Yes. Caffeine from guarana or green tea can cause insomnia, and ginseng does the same for some people. Taking a product earlier in the day may help, but stop it if sleep stays poor.
Are fat burner effects dangerous?
Most are mild, but a racing heartbeat, chest pain, fainting or liver signs can be serious. FDA also warns that some fat burners hide drugs. Seek care for any severe symptom.
How long do fat burner effects last?
We found no source that gives a standard time, since it depends on the product and the person. Stop the product if you feel unwell and ask a doctor if symptoms continue.
Who wrote this
Written and reviewed by
Pages built from the label, the brand panels and linked NIH, FDA, CDC, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a USA Authorized SodaBurn Retailer. It is not the manufacturer or a distributor named on the label. We earn money when you buy through our order links.
Keep reading
More about SodaBurn
USA Authorized SodaBurn Retailer
Ready to try SodaBurn?
Check your medicines first, especially diabetes medicine, blood thinners, blood pressure medicine and other stimulants, then pick a pack. On the seller's count one bottle is 30 days; 3 bottles cover 90 days and 6 cover 180.
- Pay at the seller checkout
- 60-day money-back guarantee
- Ships from the U.S. with tracking
