I think the operative distinction is understanding “contracepted sex.” The hormonal treatment is NOT intrinsically evil. It may be medically wise and necessary. However, if the women has sex during the hormonal treatment, that would constitute contracepted sex.
Medical procedures and treatments which render the body more capable of performing a natural function are acceptable. This is why HV makes an exception for “therapeutic means.” But allowing therapeutic means does not then allow contracepted sex while the body’s fertility is being masked by therapeutic means.
For instance, a hysterectomy is therapeutic means. After that procedure, the women is unable to ever conceive. She is infertile. According to the Natural Law, and Catholic Church, an infertile woman CAN have sexual relations, as long as the infertility was not brought about for this purpose.
But in the example you give, there is no permanent infertility - the woman’s fertility is temporarily masked (by therapeutic means for a different purpose). The medical procedure is not intrinsically evil. It’s good. However, having sex while fertility is temporarily masked is contracepted sex. This is not permissible.
2399 The regulation of births represents one of the aspects of responsible fatherhood and motherhood. Legitimate intentions on the part of the spouses do not justify recourse to morally unacceptable means (for example, direct sterilization or contraception).
Intent is not a sufficient reason to permit contracepted sex, just as it says in HV.
Of course, based on the natural law and Magisterium, you must distinguish between a couple that is permanently sterilized (NOT for the purpose of birth control), through medication or birth, and one that has fertility temporarily masked through medical treatment (which is allowed). In the first case, sex is permitted b/c the couples are using their sexual organs in the proper fashion where fertility is impossible. The Natural Law permits this because that is the function of sexual organs.
Where the treatment is therapeutic and temporary, that means the body is being contracepted. There is a difference between temporary contraception and sterility. Sterility is a biological condition, not contraception.
With temporary contraception, as permitted by the Natural Law and HV 15, one cannot have recourse to sexual intercourse, NO MATTER WHAT THE INTENT IS.
he opinion of Dr. Anthony Dardano, a pro-life physician (addressing a question on use of birth control pills for a specific medical condition, but we can extrapolate):
The use of the birth control pill as a medical therapeutic agent may be justifiable if certain conditions are met. First and foremost, the primary intent must be a medical therapy for a condition which is treatable by ovulation suppression. Ovarian cysts are a good example of this. By stopping ovulation for a few months, it gives the cysts a chance to regress. Frequently, surgery can thus be avoided and pain relief can be dramatic. However, with the lower dose pills of today, ovulation is not always completely stopped. If pregnancy were to occur it might very well be aborted by the action of the pill.Therefore, if a woman is prescribed a pill for medical reasons, she must refrain from sexual intercourse during the therapy and only then would it be morally acceptable.
See
clmagazine.org/prolifebasics/2007sept-oct.pdf .
Another physician, Dr. Paul Hayes, weighs in:
Q: Is the taking of birth control ever okay for the regulating of (a woman’s) cycle?
A: The answer to this has two components, as there is a moral component to the use of birth control drugs and devices and a medical component.
MORALLY: If a woman is not sexually active, thus eliminating the contraceptive aspect of the birth control pill, there would be no wrong committed. It is the contraceptive effect of these medications that are not permitted, not the drugs that are in them. Even if a woman were married, birth control drugs COULD (whether or not they SHOULD be used is another discussion) be used to treat a medical condition as long as the husband and wife were to abstain from marital relations, thereby eliminating the contraceptive effect. Some would argue that a couple could use NFP in these situations and simply avoid relations on the days of fertility, thus making their actions consistent with the drug they are using, though I believe this to be in error as the birth control pill will more frequently eliminate any signs of fertility making the use of NFP impossible. Plus, the birth control pill ALWAYS has an abortifacient effect, putting any baby conceived at risk of death from the drug the woman is taking.
Our Holy Father, John Paul II has stated over 15 years ago that “Contraception is to be judged so profoundly illicit that it can never be justified for any reason.” This seems to close the door on any attempt to use birth control pills for “medical reasons” if there is ever any possibility of a contraceptive effect.
The rest of his answer at
all.org/article.php?id=10162 addresses the medical advisability of using birth control pills for medical reasons. He offers alternatives. It is worth reading.
That which is intrinsically evil remains so, despite “intent.”
Sorry for the length. I hope this helps.