Quote from: Muffin on February 28, 2010, 06:19:25 PM
Spiro doesn't block the hormones that kill your hair follicles and Finasteride is only half as effective as Avodart (dutasteride), but ask your doctor about Avodart as I'm not sure if it would be safe to take if you're not transitioning, but I'm 99% sure it is. Just to be on the safe side.
Actually as far as I know spiro does in fact block DHT to a large degree as well. And Finastride isn't so much "half as effective" as it is that it only blocks one type of the two types of 5AR enzyme's. But it blocks the one that's most responsible for converting T to DHT, so it's not as simple as being "half as good".
Spironolactone does exist as a topical formulation specifically for hair loss because it does inhibit DHT's effects.
As for the original poster. You asked if what you're taking will prevent hairloss. The short and simple answer to that is pretty much yes, it will. But it could have very serious other complications as well that you may not be aware of.
Now this is just my understanding and I'm not an endocrinologist so you can take it for what it's worth, but although Spironolactone is "unlikely" to do you much permanent harm, it could cause you to have problems having children, and certainly while you're on it. And there are topical formulations you may want to look into instead. Spironolactone isn't usually prescribed for males because it's a powerful antiandrogen and so does a LOT more than just stops hair loss.
Finastride is the one I would really be concerned about, and I personally won't take it myself.
Finastride is works by inhibiting what's known as the 5AR (mostly type II but I think type I is also effected to a degree) enzyme. the 5AR enzyme converts the testosterone to DHT, and DHT causes hair loss in high enough levels. Which is the cause of male pattern baldness.
Now that's all well and good, but the problem comes in that 5AR enzymes don't "only" convert T to DHT, it
also converts progestrone to allopregnanolone and at least one other conversion I can't remember, which despite the fact progestrone is a "female" hormone, it also has a role in your physiology too. There's plenty of stuff you can find on google if you want the rest of the boring technical details, but let me cut to the point and say that there is a large and growing body of evidence of 5AR inhibitors like finastride and dutastride causing serious neurological side effects including depression, "mind fog" and minor speech problems, among others.
What you are doing could have serious long term consequences and at the very least you should go and consult with a doctor.