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Appetite Suppressant Side Effects: Jitters, Sleep, Heartbeat and More
Appetite suppressant side effects most often trace to stimulants such as caffeine: jitters, trouble sleeping, headache, nausea and a fast heartbeat (MedlinePlus, Caffeine). One SodaSlim capsule holds 138 mg of caffeine, 34.5% of the FDA's 400 mg a day guide. Ask a doctor or pharmacist first if you have heart, blood pressure, liver or anxiety issues.
Written by the SodaSlim label deskUpdated · 4 min read

What are the common side effects of appetite suppressants?
The common ones are jitters, trouble sleeping, headache, nausea and a fast or pounding heartbeat. Many pills sold for appetite lean on caffeine, so the caffeine list applies.
MedlinePlus also notes that caffeine raises blood pressure, and that stopping suddenly can bring a withdrawal headache and irritability (MedlinePlus, Caffeine). The Cleveland Clinic lists anxiety and palpitations among the early signs of too much (Cleveland Clinic, Caffeine overdose).
| Effect | Linked to |
|---|---|
| Fast heartbeat, palpitations | Caffeine (Cleveland Clinic, Caffeine overdose) |
| Jitters, anxiety, poor sleep | Caffeine (Cleveland Clinic, Caffeine overdose) |
| Headache, nausea | Caffeine, garcinia |
| Diarrhea, stomach upset | Garcinia (NCCIH, Garcinia cambogia) |
| Liver injury (uncommon) | Green tea extract, garcinia |
Is SodaSlim an appetite suppressant?
The SodaSlim label does not say it suppresses appetite. Its front reads "Metabolic & Appetite Support*" and "Supports Craving Control & Satiety*", both with an FDA asterisk.
No source shows these five ingredients together change hunger. In one garcinia trial the NIH describes, appetite and fullness were unaffected. So treat the capsule as a caffeine and extract product first, with side effects to match.
130 mg · per capsule
- Printed
- 130 mg, 50% chlorogenic acids (about 65 mg)
- Not printed
- Its own caffeine; the extraction method
Three poor-quality trials
Read the profileAll five lines as a list
- Green coffee bean extract 130 mg: Three poor-quality trials
- Raspberry ketone 130 mg: Almost no human data
- Garcinia extract 130 mg: Small effect, liver reports
- Caffeine anhydrous 138 mg: Real stimulant; 34.5% of the FDA's daily guide in one capsule
- Green tea extract 130 mg: Small effect, liver-injury signal at high amounts
Who should ask a doctor before taking an appetite pill?
Anyone with a heart rhythm problem, high blood pressure, diabetes, liver or thyroid disease, anxiety, or who is pregnant or nursing should ask first.
The SodaSlim label says it is not for anyone under 18 or pregnant or nursing, and tells you to consult a physician if you take a medicine. For medicines such as MAOIs, diabetes medicine or blood pressure medicine, ask a pharmacist.
Keep taking prescribed medicine. A capsule is not a substitute.

SodaSlim: 30 capsules, 30-day bottle1 capsule a day · 2, 3 or 6 bottles · price and guarantee terms at checkout
See packsWhen should you stop and get care?
Stop and get care for chest pain, fainting, a racing heart that will not settle, or a seizure. Call 911 for those.
See a doctor the same day for yellow skin or eyes, dark urine or severe belly pain, which are liver warning signs. For an unexpected reaction, report it to the FDA through its Safety Reporting Portal. The FDA has not evaluated the label's claims.
Where can I read the whole SodaSlim label?
The side effects page and ingredients page go through each line. A bottle holds 30 capsules, so the 3 and 6 bottle packs cover 90 and 180 days.
Price and guarantee terms are shown at checkout.

90-day supply
3 bottles: 90 days
90capsules · price shown at checkout
Ships from the U.S. · money-back guarantee
Order 3 bottles
180-day supply
6 bottles: 180 days
180capsules · price shown at checkout
Ships from the U.S. · money-back guarantee
Order 6 bottlesA 2-bottle pack is also shown by the brand. Check your medicines with your doctor or pharmacist before you order.
FAQ01
SodaSlim questions people ask
What are the side effects of appetite suppressant pills?
Common ones are jitters, poor sleep, headache, nausea and a fast heartbeat, mostly from the caffeine in them (MedlinePlus, Caffeine). Some ingredients add stomach upset or, rarely, liver trouble.
Can appetite suppressants affect your heart?
Yes, caffeine can raise heart rate and blood pressure (MedlinePlus, Caffeine). Anyone with a heart rhythm problem or high blood pressure should ask a doctor before trying one.
Do appetite suppressants make you anxious?
Caffeine can increase anxiety and jitteriness (Cleveland Clinic, Caffeine overdose). If the capsule leaves you shaky or sleepless, stop and talk to a clinician.
Is appetite control a SodaSlim claim?
Its label says "Supports Craving Control & Satiety*" and the FDA has not evaluated that. No source shows these five ingredients change hunger.
Sources (3)
- CaffeineMedlinePlus (U.S. National Library of Medicine), 2021
- Caffeine OverdoseCleveland Clinic, 2024
- Garcinia CambogiaNational Center for Complementary and Integrative Health, 2025
Who wrote this02
Written and reviewed by
Pages built from the label, the seller’s materials and linked NIH, FDA, FTC, Mayo Clinic and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site of Thesodaslim, a USA authorized SodaSlim retailer. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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Check your medicines and your daily caffeine first, then pick a supply. One capsule a day; one bottle lasts a month. The checkout shows the live price and the guarantee terms before you pay.
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- Ships from the U.S.

