@PugLove888 Since you seem to have a problem with my wording in all my posts lately, I'll try to be clear:
If your sim is sick, you can use the following cures:
Drink any tea: 30 minutes "Combatting Cold" buff
Drink Orange Juice: 1 hour "Combatting Cold" buff
Nap on BED: 3 hour "Combatting Cold" buff
Nap on SOFA: Provides NO illness cure whatsoever
Drink Medicine: Provides NO "Combatting Cold" buff. Removes illness and provides 4 hour Energized "Medicated" buff.
Drink Snake Oil Serum (from Get to work's Scientist career): Exactly the same as "Drink Medicine".
Effects stack.
I can't possibly be any clearer.