Tranexamic Acid Therapeutic Cheat Sheet

Tranexamic acid (TXA) is a synthetic lysine derivative that reversibly blocks the lysine-binding site on plasminogen, preventing conversion to plasmin.  While originally developed as an antifibrinolytic agent to reduce bleeding, TXA has several downstream effects that make it useful in dermatology, particularly for pigmentary disorders, with emerging evidence in inflammatory disorders as well. TXA can be administered orally, topically, or via intradermal microinjection. Given its distinctive safety considerations, dermatologists should be well acquainted with tranexamic acid’s risk profile before prescribing.  We continue our Therapeutic Cheat Sheet Series with a closer look at TXA and its dermatologic applications.

Tranexamic Acid Therapeutic Cheat Sheet

Compiled by: Caroline B. Clark, MD | Reviewed by: Adam Friedman, MD

TRADE NAMES

• • United States
    • Lysteda (oral)¹
    • Cyklokapron (IV)²

MECHANISM OF ACTION^3,4,5

Tranexamic acid (TXA) is a synthetic lysine analog that competitively inhibits the conversion of plasminogen to plasmin, thereby acting as an anti-fibrinolytic agent.

Downstream Dermatologic Mechanisms

• • Inhibits plasmin activity in keratinocytes, reducing ultraviolet (UV)-induced activation of melanogenesis.
  • Decreases arachidonic acid and prostaglandin production, resulting in reduced melanocyte stimulation.
  • Reduces α-melanocyte-stimulating hormone (α-MSH) activity, limiting melanin synthesis.
  • Suppresses tyrosinase activity indirectly, leading to decreased melanin production.
  • Inhibits vascular endothelial growth factor (VEGF) and angiogenesis, which may contribute to improvement in pigmentation by reducing vascularity.
  • May stabilize mast cells and decrease inflammatory mediator release to modulate inflammatory pathways in conditions such as rosacea and urticaria.

FDA-APPROVED INDICATIONS^1,2

• • Treatment of cyclic heavy menstrual bleeding
  • Reduction of perioperative and traumatic bleeding

(There are currently no FDA-approved dermatologic indications for tranexamic acid, or FDA approvals for topical tranexamic acid)

OFF-LABEL DERMATOLOGIC USES:^3,4,5

• • Melasma
  • Post-inflammatory hyperpigmentation (PIH)
  • Lichen planus pigmentosus

Limited/Emerging evidence:

• • Nevus of ota/Hori nevus
  • Rosacea (erythematotelangiectatic)
  • Urticaria
  • Angioedema
  • PIH following laser treatment
  • Acne-associated erythema

DOSING^3,6,7

(Typical melasma dosing)

Oral TXA:

• • 250 mg orally twice daily

Alternative regimens:

• • 500 mg once daily
  • 250 mg once daily (maintenance)
  • 500 mg twice daily (less commonly used)

Clinical pearl:

• • In the US, TXA is commercially available in 650mg tablets. Dermatologists commonly either instruct patients to split 650mg tablets and take 325mg twice daily, or prescribe compounded 250mg capsules.

Treatment duration

• • Initial improvement typically within 6-8 weeks, with maximum benefit at 3-6 months.

Topical TXA:

Available through compounding pharmacies and in cosmetic formulations

• • Typical concentrations: 2%, 3%, 5%
  • Dosing: once to twice daily

*Intradermal TXA (Mesotherapy):^6-8

Similar efficacy to oral therapy in some studies, suitable for patients with limited or treatment-refractory conditions or for patients with contraindications to oral TXA.

• • Concentration: 4 mg/mL to 100 mg/mL (diluted from the injectable solution)
  • Injection depth: Superficial dermis, ~1cm between injection sites
  • Volume: 0.02–0.05 mL per injection point
  • Frequency: Every 1–4 weeks
  • Course: 3–6 sessions, depending on response

*protocols vary

Tranexamic acid has also been utilized topically with microneedling for transdermal delivery, and by laser-assisted drug delivery.

CONTRAINDICATIONS & PRECAUTIONS^1,3

TXA’s mechanism of action as an antifibrinolytic raises concern for venous and arterial thromboembolic events. Careful patient selection is essential before initiating therapy.

Absolute contraindications to oral TXA:

• • Active or history thromboembolic disease:
    • Deep vein thrombosis (DVT)
    • Pulmonary embolism (PE)
    • Stroke
    • Myocardial infarction (MI)
    • Retinal artery or vein occlusion
  • Known acquired or inherited thrombophilia (e.g. antiphospholipid syndrome)
  • Known hypersensitivity to TXA

Use caution in patients with:

• • Strong family history of thromboembolism
  • Obesity
  • Smoking history
  • Prolonged immobilization
  • Hormone therapy (estrogen-containing contraceptives/replacement)
  • Migraine with aura (particularly when combined with estrogen exposure)
  • Known cardiovascular risk factors (thrombogenic valvular disease or cardiac rhythm disease)
  • Hematuria (may prevent dissolution of clots –> obstructive uropathy)
  • Upcoming thoracic surgery
  • *Renal impairment (renally excreted)

Pre-Treatment Screening Checklist

Before prescribing oral TXA, consider:

☐ Personal history of DVT/PE, stroke, MI, or retinal artery/vein occlusion
☐ Family history of thrombosis at young age
☐ Known clotting disorders
☐ Current smoking status
☐ Estrogen-containing contraceptive use or hormone therapy
☐ Pregnancy status
☐ Baseline cardiovascular risk factors (arrhythmias, valvular disease)
☐ Current medications increasing thrombotic risk

☐ *Personal history of renal disease

☐ Personal history of retinal disease

Practical note: A systematic review of 22 RCTs found no increased risk of venous or arterial thrombosis in non-surgical patients receiving TXA, and the dermatologic dose (250–500 mg/day) is substantially lower than hemostatic dosing (3,900 mg/day). Nonetheless, the low absolute risk does not eliminate the need for careful pre-prescribing screening.¹⁰

*Dose adjustments recommended by the FDA in renal impairment still exceed typical dermatologic dosing of TXA.

SIDE EFFECTS^{1, 11-13}

Oral TXA is generally well tolerated at dermatologic doses (250 mg twice daily).

Common adverse effects:

• • Gastrointestinal symptoms (nausea, abdominal discomfort, diarrhea)
  • Headache
  • Menstrual changes (especially oligomenorrhea)
  • Back pain & fatigue (not reported in melasma trials)

Less common important adverse effects:

• • Venous or arterial thromboembolism

• • In the largest melasma cohort study (561 patients), only 1 case of DVT occurred, and that patient was later diagnosed with familial protein S deficiency

PATIENT COUNSELING^{1,10, 13-14}

• • Improvement is gradual; most patients notice changes after 8–12 weeks.
  • TXA reduces melanogenesis but does not permanently eliminate melasma triggers.
  • Strict photoprotection is essential:
    • Broad-spectrum SPF ≥50
    • Visible light protection (iron oxide-containing sunscreens are particularly helpful)
    • Hat use and sun avoidance
  • Pigmentation commonly recurs after discontinuation
  • Patients should be instructed to discontinue therapy and seek medical evaluation for:
    • Unilateral leg swelling or pain
    • Chest pain or shortness of breath
    • Sudden neurologic symptoms
    • New visual changes (concern for retinal artery or vein occlusion)

OTHER ADMINISTRATION CONSIDERATIONS:¹⁴

• • Oral TXA should generally be viewed as an adjunct, not monotherapy.
  • Best outcomes occur when combined with:
    • Hydroquinone
    • Triple-combination cream
    • Retinoids
    • Azelaic acid
    • Chemical peels
    • In-office laser/light procedures

PREGNANCY AND BREASTFEEDING^1,2

Pregnancy

• • TXA crosses the placenta.
  • Although TXA has is used systemically in obstetric hemorrhage and available data have not demonstrated a clear teratogenic signal, there is insufficient evidence to recommend oral TXA for cosmetic dermatologic indications during pregnancy.

Lactation

• • TXA is excreted into breast milk in small amounts.
  • Available data suggest low infant exposure, but data is limited
  • For elective treatment, many clinicians defer systemic TXA until breastfeeding is complete.

FURTHER READING

If you would like to learn more about Tranexamic Acid, check out the following articles in the Journal of Drugs in Dermatology:

Optimizing Melasma Management With Topical Tranexamic Acid: An Expert Consensus

Abstract:

Because of its complex pathogenesis, chronicity, and high rates of recurrence, melasma is regarded as a challenging skin disorder. Topical treatments are often offered as first-line therapy. However, many patients are unaware that melasma is recurrent and requires long-term management. Hydroquinone is effective for controlling relapses and has become the standard of care for melasma in many countries. Nonetheless, it is limited by its side effect profile. Certain patient profiles who have had prior therapy and/or are refractory to treatment may be offered an alternative, that is topical tranexamic acid (TXA) alone or in combination with other modalities. This review provides a summary of current evidence on topical TXA as a treatment for certain case profiles. This paper aims to fill knowledge gaps in terms of currently available options, highlighting the role of topical TXA alone or in combination with other active ingredients (ie, topical TXA 2% with patented delivery technology).

J Drugs Dermatol. 2023;22(4): doi:10.36849/JDD.7104

The Use of Tranexamic Acid to Prevent and Treat Post-Inflammatory Hyperpigmentation

Abstract:

The risk of post-inflammatory hyperpigmentation (PIH) in patients undergoing dermatologic procedures is well known. It is especially common after laser procedures and chemical peels but can be seen with any procedure. PIH is also a sequela of acne, burns, and other trauma. High-risk patients are thought to have excessive production and abnormal distribution of melanin within the skin that triggers PIH, but the exact pathophysiology is unknown.¹ We define high-risk patients as Fitzpatrick skin types 3–5, those with existing PIH, or a history of PIH.^1,2

Tranexamic acid (TXA) is an antifibrinolytic medication prescribed to treat bleeding and is also used off-label to treat melasma. TXA is contraindicated in patients with hypercoagulable conditions, renal impairment, vision impairment disorders, pregnancy, breast-feeding, or on hormone therapies.^3,4,5

From 2015–2020, we have used TXA off-label to successfully treat and/or prevent PIH in approximately 82 high-risk patients after injuries or prior to procedures that disrupt the epidermis. We also have used TXA to prevent PIH after acute injuries such as irritant dermatitis, thermal burns, and abrasions. We now consider TXA treatment for all at risk patients prophylactically before undergoing microneedling, cryotherapy, cryolipolysis, chemical peels, and laser treatments.

J Drugs Dermatol. 2021;20(3) doi:344-345. 10.36849/JDD.2021.5622

REFERENCES 

1. 1. Drug label information. LYSTEDA™ (tranexamic acid) Tablets. Updated 09/2025. https://www.accessdata.fda.gov/drugsatfda_docs/label/2013/022430s004lbl.pdf
   2. Drug label information. CYKLOKAPRON® (tranexamic acid) injection, for intravenous use. Updated 05/2025. https://www.accessdata.fda.gov/drugsatfda_docs/label/2021/019281s047lbl.pdf
   3. Kim KM, Lim HW. The uses of tranexamic acid in dermatology: a review. Int J Dermatol. 2023 May;62(5):589-598. doi: 10.1111/ijd.16160. Epub 2022 Mar 24. PMID: 35323992.
   4. Xing X, Xu Z, Chen L, Jin S, Zhang C, Xiang L. Tranexamic acid inhibits melanogenesis partially via stimulation of TGF-β1 expression in human epidermal keratinocytes. Exp Dermatol. 2022; 31: 633–640. doi:10.1111/exd.14509
   5. J. Bae, E. J. Lee, J. Y. Kim, et al., Tranexamic Acid Inhibits 17β-Estradiol-Induced Melanogenesis Through PKA-CREB-MITF Pathway. Exp Dermatol 34, no. 12 (2025): e70194, https://doi.org/10.1111/exd.70194.
   6. El Hadidi H, Mosaad R, Ragab N. The efficacy of oral vs different dilutions of intradermal tranexamic acid microinjections in melasma-A randomized clinical trial. Dermatol Ther. 2021 May;34(3):e14924. doi: 10.1111/dth.14924. Epub 2021 Mar 7. PMID: 33651442.
   7. Ebrahim HM, Said Abdelshafy A, Khattab F, Gharib K. Tranexamic Acid for Melasma Treatment: A Split-Face Study. Dermatol Surg. 2020 Nov;46(11):e102-e107. doi: 10.1097/DSS.0000000000002449. PMID: 32701529.
   8. Sharma R, Mahajan VK, Mehta KS, Chauhan PS, Rawat R, Shiny TN. Therapeutic efficacy and safety of oral tranexamic acid and that of tranexamic acid local infiltration with microinjections in patients with melasma: a comparative study. Clin Exp Dermatol. 2017 Oct;42(7):728-734. doi: 10.1111/ced.13164. Epub 2017 Jun 25. PMID: 28649780.
   9. Lee SG, Fralick J, Wallis CJD, Boctor M, Sholzberg M, Fralick M. Systematic review of hematuria and acute renal failure with tranexamic acid. Eur J Haematol. 2022; 108: 510–517. https://doi.org/10.1111/ejh.13762
   10. Bala HR, Lee S, Wong C, Pandya AG, Rodrigues M. Oral Tranexamic Acid for the Treatment of Melasma: A Review. Dermatol Surg. 2018 Jun;44(6):814-825. doi: 10.1097/DSS.0000000000001518. PMID: 29677015.
   11. Zhang, Lei, Tan, Wei-Qiang, Fang, Qing-Qing, Zhao, Wan-Yi, Zhao, Qi-Ming, Gao, Jie, Wang, Xiao-Wei, Tranexamic Acid for Adults with Melasma: A Systematic Review and Meta-Analysis, BioMed Research International, 2018, 1683414, 13 pages, 2018. https://doi.org/10.1155/2018/1683414
   12. Zhu CY, Li Y, Sun QN, Takada A, Kawada A. Analysis of the effect of different doses of oral tranexamic acid on melasma: a multicentre prospective study. Eur J Dermatol. 2019 Feb 1;29(1):55-58. doi: 10.1684/ejd.2018.3494. PMID: 30734717.
   13. Lee HC, Thng TG, Goh CL. Oral tranexamic acid (TA) in the treatment of melasma: A retrospective analysis. J Am Acad Dermatol. 2016 Aug;75(2):385-92. doi: 10.1016/j.jaad.2016.03.001. Epub 2016 May 17. PMID: 27206758.
   14. Sarkar R, Desai SR, Sinha S, Dogra S, Arellano-Mendoza MI, Ailawadi P, Aurangabadkar S, Bagatin E, Barua S, Bhalla M, Cassiano D, Cestari T, Das A, Dayrit J, Dlova N, Lan CE, Elbuluk N, Espósito AC, Handog E, Jagadeesan S, Katoch S, Sendhil Kumaran M, Kumarasinghe P, Macarayo MJ, Miot HA, Mysore V, Narayan R V, Oh SH, Passeron T, Picardo M, Podder I, Sachdeva S, Sharma A, Sharma R, Somani V, Swarnkar B, Taylor S, Thappa DM, Vinay K, Lim HW. Delphi consensus on melasma management by international experts and pigmentary disorders society. J Eur Acad Dermatol Venereol. 2026 Apr;40(4):680-692. doi: 10.1111/jdv.70066. Epub 2025 Sep 25. PMID: 40996222.

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