By LIV Clinic · Medically reviewed by Dr. Narathai Vichienkalayarut, M.D. · Published October 16, 2026

Rebooking costs you a few weeks. Treating at the wrong moment can cost you a result you cannot undo.

When should you postpone a Botox appointment? Reschedule if you have an active skin infection or breakout at the injection site, if you are unwell, if you are pregnant or breastfeeding, or if a photographed event falls inside the next two weeks. Certain medications and neuromuscular conditions also need to be discussed before, not after, treatment.

Reasons that are about safety

Active infection or broken skin

Injecting through an active spot, cold sore, rash or broken skin at the treatment site risks spreading infection into deeper tissue. This is the clearest reason to rebook, and it is usually only a matter of days.

Being unwell

If you have a fever or are fighting an infection, most clinics will reschedule. It is a sensible precaution rather than a strict prohibition, and your doctor decides.

Medical conditions to raise beforehand

Neuromuscular conditions

The Cleveland Clinic advises avoiding treatment if you have a neuromuscular disease, existing drooping eyelids, or weak facial muscles. These are conversations for the consultation, not the treatment chair.

Previous reactions

Any previous unusual reaction to botulinum toxin should be described in full, including which brand was used, before a repeat treatment is planned.

Pregnancy and breastfeeding

The standard position

The Cleveland Clinic notes that most providers recommend waiting until after birth, and that because it is not established whether botulinum toxin enters breast milk, most advise against it while breastfeeding.

What that means practically

Cosmetic treatment is elective, so the usual answer is simply to wait. There is no urgency that justifies the uncertainty.

Medication and supplements

Raise these at consultation — some mean rescheduling, most just mean planning:

• Blood thinners, which increase bruising risk
• Anti-inflammatories such as ibuprofen and aspirin
• Fish oil, vitamin E, ginkgo and other blood-thinning supplements
• Certain antibiotics, particularly aminoglycosides, which can interact
• Muscle relaxants
• Any new medication started since your last treatment

Timing reasons to rebook

General guidance; your doctor’s advice for your situation takes priority.

Reasons that are not reasons

A mild cold without fever

Often fine, though many clinics still prefer to wait. It is worth a phone call rather than an assumption either way.

Being on your period

Not a safety issue. Some people report higher sensitivity to the injections in the days beforehand, which is a comfort consideration rather than a medical one.

Step-by-step: deciding whether to go ahead

Run through this the day before your appointment:

1. Check the treatment area for spots, cold sores, rashes or broken skin.
2. Take your temperature if you feel at all unwell.
3. List every medication and supplement you have started since your last visit.
4. Confirm nothing photographed falls within the next two weeks.
5. Confirm you have at least four clear hours before any flight or ferry.
6. Call the clinic rather than guessing if anything on this list applies.
7. Rebook without hesitation if the answer is unclear — the treatment will wait.

Rescheduling at LIV Clinic

No penalty for being sensible

At LIV Clinic on Koh Samui and Koh Phangan, Dr. Narathai would rather move an appointment than treat at the wrong moment. Call the clinic if anything above applies and it will be rebooked.

Read next

See our Botox and wrinkle programme, read about whether Botox is safe on holiday in Thailand, or book a consultation.

Frequently asked questions

Safety and consultation

Botox is a prescription medical treatment and, like any injectable, carries some risk — common temporary effects can include redness, swelling, bruising, mild headache or a short-lived heaviness, and less common reactions such as temporary eyelid or brow droop are possible. Results vary from person to person, and no specific outcome can be promised. This article is general information, not medical advice.

At LIV Clinic, every treatment begins with an in-person assessment by Dr. Narathai Vichienkalayarut, M.D., who reviews your skin, medical history and goals before recommending a personalized plan. Book a consultation to find out whether this treatment suits you.