Look on the backs of the bottles under "active ingredients"
If ANY of them double or repeat... NO. If the actives are all different... tenatively yes, but definitely MAYBE (check with your pharmacist... you don't usually want to mix two antihistamines).
Tylenol & Ibuprofen can be given at the same times because they are both entirely different drugs AND they have different modes of action which help each other instead of "contraindicate" each other.
Cold medicines, on the other hand, often include the same lists of ingredients.
A: might have
- Dextromethorphan
- Guaifenesin
- Acetaminophen
B: might have
- Dextromethorphan
- Acetaminophen
- Phenylephrine
C: Might have
- Ibuprofen
- Pseudoephedrine
A & B CANNOT be taken together. A+C = OK, & A+B = OK.