THE THREAD OF WOMEN'S HEALTH

A few things need to be taken into consideration. Hypericum, or St. John’s wort, which is used as an antidepressant, interacts with many drugs. When taken together with the pill, even when spaced out, it may cause a reduction in contraceptive effectiveness due to a decrease in the plasma concentration of estrogen (ethinyl estradiol). 

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I read in a magazine that this is a better method to use than others in this case.

Is there a specific moment in which it must be inserted? Or can you insert it whenever you want?

Help…. how long does the insertion take... and what if it moves places? Is this possible?

Since the effect lasts for such a long period of time, I'm afraid that it will lose its effectiveness over time.