[Pseudoscience-is-malarkey (OP)]

1. Hemorrhoidal cream.
2. The pill.
3. Allergy shots.
4. Paxil.
5. Daunorubicin.
6. Sildenafil.
7. MRI.
8. Nembutal
9. Forget-me-not (a pill used after consensual sex where one party induces the other party with a little amnesia so they don't remember how bad the sex was.
10. What ever pill(s) that are responsible putting an almost complete stop to the AIDS epidemic in the developed word..

[alancalverd]

1. I'll accept the word of an expert
2. Responsible for ludicrous house prices and the destruction of the UK economy
3, 4, 5, 6 see 1
7. Great for diagnosing things we can't treat
8, 9 see1
10 Education, education, education. And condoms.
.

[Petrochemicals]

4 decades? That would mean 1980.  I think you are showing your age.

[alancalverd]

6,7, and 10 are certainly recent additions to the armamentarium.

[Bored chemist]

"Since its development in the 1970s and 1980s, MRI has proven to be a versatile imaging technique. "
From
https://en.wikipedia.org/wiki/Magnetic_resonance_imaging

[alancalverd]

The first commercial MRI machine was manufactured in 1980, so I guess it missed the "four decades" mark by a few months, but the first installation of a routine clinical machine (as distinct from laboratory lashups) in the UK was in 1984, which made the cut in my book.