What are fat-dissolving injections?
Fat-dissolving injection is a marketing phrase for anything injected into fat with the aim of reducing it. It is used for at least two different things: a prescription medicine for fat under the chin, and a range of cosmetic ampoules sold under names such as "Lemon Bottle" or "lipolysis solution". They are not the same, and only the first has phase III trials behind it.
Search interest is real. People type "fat dissolving injections Malaysia" and "suntik lemak bawah dagu" into Google, usually about a double chin. Before any of that, it helps to know that a double chin is not always fat, which is the point of why a double chin is not always fat.
Which fat-dissolving injection is a medicine?
Deoxycholic acid is the one with trial evidence. It is a bile acid that, when injected into fat, breaks down fat cells, a process the papers call adipocytolysis. An injectable form called ATX-101, sold as Kybella, was tested in a phase III randomised trial in adults with moderate or severe fat under the chin, compared with placebo, and it was reported to work better than placebo. Follow-up in that trial was limited to 44 weeks.
A 2021 review notes that it was the first lipolytic substance approved by the US Food and Drug Administration for fat reduction in that area. It is a prescription medicine, and a doctor decides who gets it. The same review lists the usual effects, which are swelling, pain, bruising and numbness that normally settle. It also lists complications: skin necrosis, nerve injury, hair loss (alopecia) and vascular events, with no specific management protocol.
That evidence belongs to one medicine in one area. It does not carry over to any other ampoule.
What is in a Lemon Bottle?
The packaging has been reported to list bromelain (an enzyme from pineapple), lecithin and riboflavin (vitamin B2), and the contents have not held up. In 2024, Swissmedic, the Swiss medicines regulator, tested samples. One held only caffeine and another held none of the declared ingredients, and Swissmedic said the products can be regarded as falsifications. It stated that no medicinal effect has been proven and that the quality of the ingredients has not been tested.
In April 2025 the UK General Pharmaceutical Council warned pharmacies about the same product type, calling it unlicensed and unregulated. It said such products have potentially caused serious harm, and the trade report of the warning adds that users had earlier described severe bruising, infections, abscesses and, in one case, tissue death. Both warnings come from regulators abroad. I found no statement from a Malaysian authority about Lemon Bottle, and I am not implying one.
How do you check registration in Malaysia?
Check the label for a registration number, then search it. The NPRA says every registered drug is given a number that must be printed on the label, and that it starts with MAL. A public search tool called Quest3+ lets you look products up by name, number or active ingredient.
I searched Quest3+ on 1 October 2026 by active ingredient and by name. Deoxycholic acid returned three products, all oral capsules of a different bile acid, none injectable. Sodium deoxycholate, the brand name Kybella and the names Lemon Bottle and Aqualyx returned no results. This is a snapshot. The register says results apply only to the date and time of the search, and a search that returns nothing does not tell you whether a product is registered under another name.
So the practical rule is simple. If a seller cannot show a registration number that you can match on the register, do not have it injected.
Who may inject, and what should you ask?
Injecting a medicine is a medical act, and the Ministry of Health publishes lists of aesthetic procedures that only a doctor may perform. The plain-language version is in aesthetic procedures only a doctor may perform in Malaysia, and I have not tried to say here where any single injection sits on those lists.
Ask five things. What is the product and its generic name? Does it have a MAL number that matches the register? Who is injecting, and are they a registered doctor? What happens if there is a complication? Who takes responsibility afterwards? A person who cannot answer the first two has answered your question.
If the goal is less fat, what else is there?
That depends on the kind of fat and on where it is. For a small pocket in someone near their target weight, devices such as OndaPro or radiofrequency are used, and the article on Vanquish, CoolSculpting and laser lipo explains how they differ. Stubborn fat treatment in Setia Alam describes how the diagnosis decides the tool.
A doctor may also decide that the shape under the chin is loose skin or muscle, and no injection will fix that. "Fat dissolving" is a phrase for the sale. The diagnosis comes first.
Common questions
Is a fat-dissolving injection legal in Malaysia?
It depends on the product. A registered medicine carries a MAL number that you can look up on the NPRA Quest3+ register. On 1 October 2026 I found no injectable deoxycholic acid product on that register, and I found no Malaysian statement about "Lemon Bottle" products, so check any product yourself before agreeing to it.
What is in Lemon Bottle?
The packaging has been reported to list bromelain, lecithin and riboflavin. Swissmedic tested samples and found one containing only caffeine and another none of the declared ingredients, and it advised against use.
Does a fat-dissolving injection work for a double chin?
Deoxycholic acid injections were tested in a phase III trial for fat under the chin and compared with placebo. That is one specific medicine and one specific area, and the trial does not speak for other ampoules with similar names.
Sources
- Swissmedic. Warning on "Lemon Bottle", 26 March 2024, updated 25 June 2024 Not authorised as a medicinal product in Switzerland; declared ingredients bromelain, lecithin and riboflavin; one lab sample held only caffeine and another none of the declared ingredients; regarded as falsifications; no proven medicinal effect; use advised against.
- Pharmacy Magazine. GPhC issues warning on sales of fat-dissolving Lemon Bottle injections (warning of 10 April 2025) The UK General Pharmaceutical Council called such products unlicensed and unregulated and said they have potentially caused serious harm; the trade report adds earlier user accounts of severe bruising, infections, abscesses and one case of tissue necrosis.
- ATX-101 for reduction of submental fat: a phase III randomized controlled trial. Journal of the American Academy of Dermatology, 2017 Injectable deoxycholic acid tested against placebo in adults with moderate or severe fat under the chin; most adverse events were at the injection site; follow-up limited to 44 weeks.
- Deoxycholic acid in the submental fat reduction: a review of properties, adverse effects, and complications. Journal of Cosmetic Dermatology, 2021 First lipolytic substance approved by the US FDA for fat reduction in that area; swelling, pain, bruising and numbness are usual; skin necrosis, nerve injury, alopecia and vascular events are reported complications.
- National Pharmaceutical Regulatory Agency (NPRA), Malaysia. FAQ: product registration A registered drug is approved by the Drug Control Authority; its registration number, starting with MAL, must be printed on the label; a public product search is available.
- NPRA Quest3+ public product search, searched on 1 October 2026 No injectable deoxycholic acid product found by active ingredient or by the brand name; the only hits for the ingredient were oral capsules of a different bile acid. Results apply only to the time of the search.
Disclosure: In 2022 Dr Ong was a key opinion leader for Botox for Allergan, which makes Botox, the Juvéderm range and CoolSculpting, and he has spoken for Allergan on botulinum toxin and at the CoolSculpting launch in Manila (2019). In November 2018 BTL Aesthetics, which makes Emsella, Emsculpt and Vanquish, named the clinic a HIFEM Centre of Excellence, and in April 2019 Dr Ong spoke at the Malaysian launch of BTL Unison. How he thinks about ties like these: The quiet we kept: what shapes what your doctor recommends.
