It's definitely not a completed answer but here is what I found: "Prednisone is rapidly converted to prednisolone in the liver and in most instances, these drugs are considered to be roughly equivalent." The above quote is from the website linked below.
pregnenolone
Pregnenolone is formed in the human body from cholesterol, and is the precursor of both male and female hormones. So it is not specifically a male hormone.
Prednisolone is a drug that acts in a similar fashion to the hormone cortisol; its primary effect is to modulate and down-regulate the immune system, although there are numerous side effects as well. In general, prednisolone is indicated to control excessive immune reactions such as auto-immune disease or in short term cases, such as to control excessive scratching.
Pregnenolone must be avoided while while pregnant or breastfeeding. Sometimes it can cause anxiety, acne, facial hair growth and negative mood changes.
4 mg methylprednisolone is equivalent to 5 mg prednisolone.
Pregnenolone was first used in the 1940's as a treatment for arthritis, to ease the swelling of joints and inflamation. It is now also used as a treatment for memory loss, attention loss, mood disorders, PMS and stress
No, tobramycin and prednisolone are not the same drug.
Yes
yes
yes
no
Depends on the animal. Horses cannot convert prednisone to predinisolone, so prednisolone is the drug of choice.