Can i take guafisan and the asthma medication primatene combined?

Yes but: Yes the primatene will help with the asthma symptoms by opening the air passages and the Guaifenesin (which is an expectorant) will help break up chest congestion (mucous) so if chest congestion is present Guaifenesin will help. Primatene is probably not the best choice for the asthma- a prescription inhaler would be better so ask your health care professional about it.

Yes and no: Depending on how old you are and whether you have any cardiac problems, Guaifenesin and primatene may add their side effects: can cause high blood pressure, rapid heart beat, tremors, anxiety etc. Primatene is an ancient medicine, I am surprised you can still find it. Maybe you should go for something more modern.

Guaifenesin: Yes. Primatene is an otc bronchodilator called ephedrine (ephedrine sulfate). Guaifenesin is an expectorant that helps to thin and loosen secretions. Together, they can both help with some asthma, but they are not enough. You need a controller, or anti-inflammatory medication also. Some varieties of Guaifenesin come in combination with pseudoephedrine (ephedrine sulfate); don't take that version with primatene pills: both are stimulants.