Kybella (Kythenvisninger), where to get it: comparing fat versus sagging (skin laxity) and injection zones

Kybella works best when chosen at a clinic that can distinguish whether a double chin is caused by fat or sagging (skin laxity), and that determines the injection zone while avoiding the nerves that move the mouth.[1][2]A fat-reduction injection is a treatment where results are more likely to appear when three factors align: patient selection, injector skill, and multiple visits.[3]Most research uses the same-ingredient approved drug (ATX-101), not Kybella itself.

Can a doctor tell whether it's fat or sagging (skin laxity)?

The first thing to confirm is what causes the fullness. When the jaw line sags, if it is due to tissue descent, surgery may be better; if it is due to loss of subcutaneous tissue, a fat-reduction injection is considered less suitable.[1].

An analysis of large trials of the approved drug showed effects regardless of sex, age, or BMI, and skin laxity did not worsen in about 90% of people.[4]However, whether injection alone is enough for people with noticeable sagging (skin laxity) requires clinical examination.

What about injection zone and nerve protection?

The injection zone is determined by avoiding the nerve that moves the mouth (marginal mandibular branch). A reported method divides the submental fat into zones and excludes areas near the nerve from injection.[2].

In this method, 160 out of 167 people (95.8%) showed improvement in fullness using 1 cm spacing marks for injection.[2]Keep in mind this is a retrospective study from one clinic.[2].

Temporary nerve paralysis causing difficulty moving the mouth, skin irritation, and infection are listed as possible reactions.[5].

How are dose and number of sessions decided?

Larger doses are reported to increase the risk of serious side effects.[6]Ask in advance about the dose per session and how many visits you will need.

In approved drug trials, injections were given at roughly 28-day intervals for up to 4 sessions maximum.[4]58.8–63.8% of people achieved at least one-stage reduction in submental fat, compared to 28.6% with placebo.[4]Results are reported to persist for about 3 years in most people.[5].

What about swelling and pain management?

Common effects are swelling, numbness, and soreness on pressure, most of which are temporary.[2][6]Rarely, severe pain, hair loss, difficulty swallowing, and dizziness have also been reported.[6].

In a small 15-person trial, adding a small amount of steroid and anesthetic reduced pain and swelling while preserving efficacy.[7]It is also worth asking what measures the clinic takes for swelling and pain.

How should research numbers be interpreted?

It is safest to discount the numbers somewhat. All randomized trials included had reported funding or involvement from pharmaceutical companies.[8].

The same review noted that people given the drug experienced more pain, hematoma, itching, numbness, and nodules.[8].

Where to get it: a guide when in doubt

At your consultation, ask about these points:

Evaluation: Can they determine whether the fullness is fat or sagging (skin laxity)?[1]

Injection zone: Can they explain the zone that avoids the nerve?[2]

Dose and sessions: Do they have a plan for the dose per session and number of visits?[6][4]

Swelling and pain: What measures do they take, and is there a contact point for follow-up concerns?[6][7]

Contraindications: Will they check for infection at the injection site, blood-thinning medication use, and pregnancy?[1]

Whether your fullness is fat that can be reduced by injection or requires another approach cannot be decided from an article alone. At your consultation, have them examine the area under your chin by touch to assess the amount of fat and sagging (skin laxity), and decide together on the injection zone and number of sessions.