I have a cold & am taking Benylin Mucus and Phlegm (guaifenesin). If people smoke cannabis near me, will secondhand smoke interact w/ the drug?

Hi,

The secondhand smoke should not interfere with the medication. However, since you are having an infection affecting your breathing and since cannabis affect your breathing, I would not take the chance to stay nearby people smoking cannabis while having a cold!

I hope my answer helps you!

Have a nice day!