1 If removing and disposing of the existing roofing material isn't included in an estimate, this can add another $3-$5 a square foot or $510-$1,100 for a basic ranch-style home -- and costs go higher depending on location and the difficulty of the removal project. According to RoofHelp.com, the average lifespan for 20-year asphalt shingles is about 14 years in Phoenix, Arizona; 19.5 years in Minneapolis, Minnesota; and 20.8 years in Reading, Pennsylvania.
Excipients or inactive ingredients are supposed to be inert, which means they don't have any effect on you, but some can cause symptoms by themselvesâ and potentially allergic reactionsâor interact with the drug's active ingredients to cause unexpected results.
Active ingredients are the substances in drugs that are responsible for the beneficial health effects experienced by consumers. The active ingredient in a pharmaceutical drug is called an active pharmaceutical ingredient (API). An example of an API is the acetaminophen contained in a pain relief tablet. The active ingredient in a biological drug is called a bulk process intermediate (BPI).