The standard dosage for oral Benadryl is 1 mg per pound of body weight, given 2-3 times a day. Most drug store diphenhydramine tablets are 25 mg, which is the size used for a 25 pound dog. Always double check the dosage before giving an over the counter medication. In addition, many formulations are combined with other medications such as Tylenol so make sure Benadryl tablets contain only diphenhydramine.
NEXT STEP. Find out how much your project will cost. Provide a few details about your project and receive competitive quotes from local pros. The average national cost of adding a room or building an addition is $40,960, with most homeowners spending between $21,711 and $63,014.This data is based on actual project costs as reported by HomeAdvisor members.rovide a few details about your project and receive competitive quotes from local pros. The average national cost of adding a room or building an addition is $40,960, with most homeowners spending between $21,711 and $63,014.
1 Designing a 25x25-foot room addition that costs $165,000-$200,000 to build could generate an architect's bill of $8,250-$30,000; using this pricing method, the fee for a $750,000 custom-built new home could be $37,500-$112,500. A negotiated flat fee can be as low as $700-$1,000 for up to a specified number of hours spent creating a concept design. 2  Or an architect might agree to design a 25x25-foot room addition for $5,000-$10,000, or a 3,000-square-foot custom home for $50,000-$75,000 or more, no matter what the final construction price is.