BTW - cortisol is the same as hydrocortisone. -ol is just the suffix for an alcohol, and if you take an -one (a ketone) and add a hydrogen, you get hydrocortisone, which is just an alcohol, aka, cortisol.
If you take a lot of hydrocortisone/cortisol, prednisone, dexamethasone, or other corticosteroids, you will suppress the HPA - cortisol will become undetectable with enough of any of them (except obviously hydrocortisone, since it's the same thing as cortisol).
A healthy human adult generally makes on the order of 20-30mg of cortisol per day. Most of this is in the early morning hours shortly before we wake up. It has a strong circadian rhythm to it. Hydrocortisone is short acting, so often people with adrenal insufficiency take 15-20 mg first thing in the morning, then 5mg with lunch, and 5mg with dinner - this is sufficient for complete replacement of cortisol.
It's normal to feel somewhat better on short term corticosteroids. They tend to give you more energy in general. They stimulate gluconeogenesis, suppress inflammation, and reduce the amount of insulin produced (increasing blood sugar). Exercise also stimulates cortisol release as you need more sugar for your muscles to work.
You can drop more quickly on HC do around 20-30, after which a slower taper is needed if you have been suppressing the adrenals for a long time. If the therapy has been short term or pulsed, then tapering is often unnecessary.
Corticosteroids should generally be taken in the morning after the body has released its own cortisol. With HC, this leads to minimal HPA suppression since the HC is mostly gone by the time CRH/ACTH should start climbing to stimulate the adrenals to release cortisol.
If you've been on 20mg of HC for a long time, then yes, you should taper it. However, if the dosing was well timed, you may not have much HPA suppression - but you may have some degree of tachyphylaxis. This is a phenomenon whereby the body requires higher doses of steroids to achieve the same effect.
If you take a lot of hydrocortisone/cortisol, prednisone, dexamethasone, or other corticosteroids, you will suppress the HPA - cortisol will become undetectable with enough of any of them (except obviously hydrocortisone, since it's the same thing as cortisol).
A healthy human adult generally makes on the order of 20-30mg of cortisol per day. Most of this is in the early morning hours shortly before we wake up. It has a strong circadian rhythm to it. Hydrocortisone is short acting, so often people with adrenal insufficiency take 15-20 mg first thing in the morning, then 5mg with lunch, and 5mg with dinner - this is sufficient for complete replacement of cortisol.
It's normal to feel somewhat better on short term corticosteroids. They tend to give you more energy in general. They stimulate gluconeogenesis, suppress inflammation, and reduce the amount of insulin produced (increasing blood sugar). Exercise also stimulates cortisol release as you need more sugar for your muscles to work.
You can drop more quickly on HC do around 20-30, after which a slower taper is needed if you have been suppressing the adrenals for a long time. If the therapy has been short term or pulsed, then tapering is often unnecessary.
Corticosteroids should generally be taken in the morning after the body has released its own cortisol. With HC, this leads to minimal HPA suppression since the HC is mostly gone by the time CRH/ACTH should start climbing to stimulate the adrenals to release cortisol.
If you've been on 20mg of HC for a long time, then yes, you should taper it. However, if the dosing was well timed, you may not have much HPA suppression - but you may have some degree of tachyphylaxis. This is a phenomenon whereby the body requires higher doses of steroids to achieve the same effect.