I've had a cough for 4 days an it's pissing me off so I dicided to double the directed usage amount to get rid of it I took 40 ml and each 5ml has
-Brompheniramine Maleate 1 mg
-Dextromethorphan 5 mg
- Phenylephrine 2.5 mg
The brand is Childrens Dimetapp DM Elixer Cold & Cough
Will I be okay...