In the rather limited sense that "synthesized version" means "a completely novel chemical that has never been found in nature and was specifically developed to avoid many of the problems with the `natural' original."
Aspirin is not salicylic acid. It is acetylsalicylic acid; with an acetyl group substituting for (IIRC) a hydroxyl group.
Ouch - seem to have touched a nerve... Mea culpa - I said it was a 'version' of salicylic acid, which was perhaps not precise enough. My point was that the 'original' was derived from a plant source, as is the case with many modern drugs.
And it's precisely the unnatural neutralization of this hydroxyl group that makes it almost immeasurably safer and more effective.
"Almost immeasurably safer"?
From the BMA Guide To Medicines & Drugs:
O.D. danger rating: High - for restlesness, stomach pain, ringing in ears, blurred vision, vomiting, take emergency action.
Common effects: Nausea, vomiting, gastric bleeding.
Rare effects: Rash, breathlessness/wheezing - stop taking, call doctor
now.
Can cause Reyes disease.
Special Precautions: Consult doctor if : kidney/liver problems, asthma, nasal polyps, clotting disorder, ulcer, other medications.
Children under 12 - close medical supervision
Pregnancy - not recommended
Alcohol - avoid
Interactions: anticoagulants, NSAIDs, corticosteroids, gout meds, oral antidiabetics.
If this is "almost immeasurably safer" than the plant remedy, one wonders how it ever came to be so popular
