Treatment with Benicar was well tolerated, with an incidence of adverse reactions similar to placebo. Events generally were mild, transient and had no relationship to the dose of Benicar. The overall frequency of adverse reactions was not dose-related.
Sometimes you may also get an itchy rash on your skin, called hives. Antihistamines reduce or block histamines, so they stop allergy symptoms. Antihistamines work well to relieve symptoms of different types of allergies, including seasonal (hay fever), indoor, and food allergies, but they can't relieve every symptom. To treat nasal congestion, your doctor may recommend taking a decongestant.
Dude I don't think Fioricet will help much with opiate withdrawal, sorry to say. Don't get me wrong though, it will slightly help, but that's it. Fioricet is a barbituate, and a weak one at that. You're better off getting a couple benzos or even taking an ambien if you really have to substitute to feel better.