I take 20 mg. of Tamoxifen daily for breast cancer diagnosis. Is sclerotherapy safe to resume while taking this drug?

Thank you for your question, For varicose veins, we typically recommend a safe, minimally invasive procedure called Sclerotherapy. A salt solution is injected directly into each vein, causing them to collapse and ultimately disappear. For long-term improvement, we often complement Sclerotherapy with IPL (Intense Pulsed Light) photofacial and the Excel V laser, which treats both superficial and deep vascular conditions on all skin types. I suggest seeing an expert for a formal evaluation to determine if this is the best solution for you. Best, Dr. Emer

Tamoxifen is well-known in increasing risk for deep venous thrombosis(DVT) , although sclerotherapy therapy has very slim chance of DVT but the combination may increase the risk, so you have to consult with your oncologist before you do it. 

Your provider vein specialist and also oncologist can give you the best advise on treatment plan to follow in order to prevent any possible complications from current treatment and future one. On the vein side it is recommended to first re-evaluate and re-assess your venous circulation with ultrasound to check for patency and venous reflux. Then decide when or which treatment or combination of treatments is best for your specific case.All the best, 

Taking tamoxifen even without sclerotherapy does carry an increased risk of developing DVT.  The chances of developing DVT from sclerotherapy is very low but it present.  You would need to weigh the need for sclerotherapy against your increased risk for DVT.