Does taking a lower dose of fertility drugs improve your chances of becoming pregnant with IVF? I think not, but I can tell you of some exceptions. Mostly I have had some very good experiences with patients confirming that lower is not better.

How do I know?

Well, as it turns out over the past few years I have been seeing more patients from Europe. There are a few things that have contributed to this. One is the blog. It’s been fun getting e-mails and seeing patients from around the world. The second is the exchange rate: for some, New York is now a “reproductive tourism” destination. The third has to do with laws in Italy, Germany and other countries that restrict IVF and donor egg.

Anyway, the European doctors give their patients a much lower dose of drug that we do in the US. Part of this is due to the fact that they may not be allowed to fertilize more than a few eggs, so they don’t bother trying to get more. Another reason may just be due to a general philosophy that less drug is better.

So the typical European woman that sees me has done IVF many times, usually making just a few eggs on a lower dose of drug. Unless she has had a fantastic response, I increase the dose for her IVF cycle with me. In most cases, the egg yield is much higher (still in a safe range) and the pregnancy rate in these women is very high. So the point is that in these women, a higher dose is better because it increases the number of eggs, and therefore there are more embryos available for selection.

Do some women make more eggs with a lower dose? I have seen a few cases of this. This is typically the woman who was given a lower dose for IUI and develops more follicles than she did with her higher dose IVF cycle. Should we go back to the lower dose for the next IVF cycle? It’s a gamble and it takes a little courage. It is really hard emotionally to go into an “experimental” IVF cycle.

Many patients considering this have had many attempts and may not be ready to give up a couple months for a “let’s see” cycle. If you and your doctor can stomach it, you can give it a try. I can tell you I have one woman, who had been through many cycles, who wanted to give it a go, and she did better with less. Was that her month to make more, regardless of drug dose? Who knows, but let’s give her the credit.

But I do think starting on a minimal dose, just because your doctor thinks it’s more homeopathic and will result in better quality embryos, is not correct. To return to our common theme, if one of the self proclaimed experts in minimal stimulation wants to take 100 women and give them minimal stimulation, and take another 100 and give them regular stimulation, and then show us that minimal is better, great. But until this happens we have to say that it’s not better, and may be worse for most people. I know some of you can tell me that you did minimal and got pregnant. I just feel that my experience has shown that overall, regular may be better.

Please read disclaimer 5/17/06, and thanks again, Dr. Licciardi