What to know about tranexamic acid for melasma in pregnancy

Tranexamic acid can be used in different ways for melasma, including products applied to the skin and medicine taken by mouth. The route changes how much medicine reaches the bloodstream, while personal factors such as clotting history, migraine symptoms, smoking, medicines and pregnancy-related risks can change suitability. Melasma itself often becomes more noticeable with hormonal changes and ultraviolet or visible-light exposure, so treatment decisions should balance skin goals with pregnancy care.

Do not start oral tranexamic acid for melasma during pregnancy without approval from the clinician managing your pregnancy and the prescriber who understands your skin history. If you are already using a topical product, pause and share its ingredients and application area for review rather than assuming topical means appropriate. Use a gentle cleanser, moisturiser, protective clothing and a broad-spectrum sunscreen; ask about a tinted product if visible light worsens pigmentation. Avoid irritating or unlabelled lightening products.

Seek urgent care for sudden shortness of breath, chest pain, coughing blood, one-sided leg swelling or pain, sudden weakness, or a severe new headache or vision change while taking tranexamic acid. These may signal a serious reaction and should not wait for a routine skin appointment. Contact your clinician promptly if melasma changes rapidly or a product causes burning, swelling, blistering or a rash.

Ask which route, if any, is suitable for your pregnancy, whether your medical and family history changes the decision, and what alternatives can control pigmentation. Discuss sunscreen details, expected changes after pregnancy, and when treatment can be reassessed after delivery and breastfeeding.