Oral Tranexamic Acid for Melasma: Results, Treatment Duration, and Thrombosis-Risk Checks

Tranexamic acid reduces fibrin breakdown by inhibiting plasminogen activation. In the skin, it may regulate the UV-activated plasmin pathway and signals involved in melanin production, but melasma is a recurrent condition and international standards for dose and duration are not fully established. Thrombosis, bleeding, kidney function, and concurrent medications must be reviewed before prescribing.

Randomized studies and systematic reviews have reported that oral, topical, and injected tranexamic acid may reduce melasma-severity measures. Some analyses suggest a relatively clearer effect with oral treatment, but sample sizes, doses, and follow-up periods vary, and long-term recurrence data are limited. Freckles, age spots, and nevi are not treated with the same medication, and a permanent cure cannot be guaranteed.

Adults with melasma that has responded inadequately to standard treatment such as sun protection and hydroquinone may be considered after risk screening. Personal or family history of thrombosis, coagulation disorders, stroke or myocardial infarction, combined hormonal contraceptives or hormone therapy, smoking, cancer, pregnancy or breastfeeding, kidney disease, planned surgery, prolonged immobilization or long-haul flights, and visual symptoms must be disclosed.

The clinician distinguishes melasma from other pigment disorders and reviews medications, contraception, smoking, family history of thrombosis, surgery, and travel plans, with blood and kidney assessment considered when needed. Continue broad-spectrum protection from ultraviolet and visible light and low-irritation topical treatment while taking the medication. Do not increase the dose or continue long term without guidance; establish a discontinuation point and recurrence-management plan.

Nausea, abdominal pain, diarrhea, headache, and menstrual changes may occur. Although rare, serious risks such as deep-vein thrombosis, pulmonary embolism, and cerebral or ocular thrombosis must be considered. Swelling, pain, or warmth in one leg; sudden chest pain or shortness of breath; visual changes, slurred speech, or paralysis requires immediate emergency evaluation.

Q. Can I take it while using birth-control pills?

A. Estrogen-containing combined contraceptives may increase thrombosis risk, so the prescribing clinician must be consulted.

Q. Does a blood test reduce thrombosis risk to 0?

A. Testing alone cannot exclude every risk, so medical history and circumstances must also be considered.

Q. Is it more effective than laser treatment?

A. Their mechanisms and risks differ; choosing a combination suited to the melasma type and recurrence factors is more important than declaring one superior.

Evidence and contraindication screening for oral tranexamic acid in melasma were reviewed in a PubMed review (https://pubmed.ncbi.nlm.nih.gov/29677015/), a 2023 focused review of medication safety (https://pubmed.ncbi.nlm.nih.gov/36606378/), and a 2024 network meta-analysis of administration routes (https://pubmed.ncbi.nlm.nih.gov/38059683/). A large 2025 electronic-medical-record analysis (https://pubmed.ncbi.nlm.nih.gov/41256337/) should be interpreted as evidence from a selected low-risk population.

SEOLREIM Clinic does not repeatedly prescribe oral melasma medication to every patient. The doctor personally distinguishes among melasma, PIH, freckles, and solar lentigines, checks thrombotic risk and lifestyle factors, and then directly manages the necessary sequence among prescriptions and signature pigmentation programs such as pico toning, laser toning, and IPL.

Visitors searching for “pigmentation treatment Korea” should disclose contraceptives, hormone therapy, smoking, family history of thrombosis, long-haul flights, and surgery schedules, as well as whether they can continue prescriptions and access emergency care after returning home. SEOLREIM Clinic is on the 11th floor of the Gangnam 8258 Building, about 1 minute from Exit 3 of Gangnam Station. Appointments can be made through the website’s KakaoTalk consultation, Naver booking, or telephone channels. International visitors comparing information on a Gangnam skin clinic, Seoul skin clinic, Gangnam Station skin clinic, or Korean skin clinic should prepare their passport, allergy information, medication list, recent treatment records, and departure schedule, and should confirm available consultation languages and the scope of interpretation support before booking. Depending on the examination findings, same-day treatment may not be possible, or follow-up after returning home may be necessary.

Written by: SEOLREIM Content Editor / Medical review: Completed / Review confirmation date: 2026-10-23 / Publication date: 2026-09-27 / Updated: 2026-10-27. This is general medical information and does not replace individual diagnosis or a treatment prescription.