Janet: “How is the transdermal delivery system different than just applying lotions to your skin?”
Dr. Borkin: “This is where I need to explain the difference between a transdermal and a topical. There are many products, especially progesterone creams that claim to be transdermal but they are not. They are only topical.”
Dr. Borkin: “They call themselves transdermal because the size of the progesterone itself is so small. If apply the progesterone itself to the skin, it is small enough so it goes through the pores of the skin and winds up in the blood stream to a certain extent.”
Dr. Borkin: “Unfortunately, much of what you apply is actually stored in the skin and in the fat cells. A true transdermal delivery mechanism is the equivalent of directing it through a specific apparatus directly into the blood stream. It is similar to drinking a glass of water filled with ice. If you insert a straw, you get more of the fluids.
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