Hormone Replacement Skin Patches Don’t Raise Risk for Blood Clots

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Oral hormone replacement therapy, or H.R.T., increases the risk for potentially fatal blood clots. yet a study in BMJ found in which hormone replacement delivered through the skin by injection or skin patch entails no increased risk for blood clots.

British researchers looked at 80,396 women who had blood clots while on various H.R.T. regimens, comparing them with 391,494 controls. After adjusting for ethnicity, smoking, alcohol use, chronic medical conditions in addition to also different factors, they found in which oral preparations increased the overall risk of clots by 43 percent. Oral drugs containing equine estrogen more than doubled the risk in some regimens, although the absolute risk for blood clots is actually smaller.

yet skin treatments, including patches, creams, gels in addition to also under-the-skin injections, had no effect on the risk for blood clots.

About 80 percent of the women inside study using H.R.T. took the medicine orally, in addition to also among the women who used transdermal regimens, 87 percent used the skin patches.

The lead author, Dr. Yana Vinogradova, a research fellow at the University of Nottingham, said in which she would likely advise women who are candidates for H.R.T. to start with the hormonal skin patch. “If in which doesn’t help, or if there are skin problems, then the woman should discuss with her doctor what’s next.”