Can I get high off of this? Is this safe (to ones own discretion)?

I have had 2 boxes of Assured Multi-symptom Daytime Liquid Capsuls sitting in my closet for some time now...I have experimented with Dxm highs before but never really paid attention to the active ingredients in most things...never really had to...the active ingredients in each soft gel are: Acetaminophen 325 mg USP, Dextromethorphan Hydrobromide 10 mg, and Phenylephrine 5 mg...I weight roughly 150 to 170 pounds I beleive...any warnings or suggestions I'm just tinkering with the idea of using them to get high (both boxes at 200 mg of Dxm). I won't make any descisions until I get answeres anything helps.