Suggest People not to adjust the dose of acetaminophen and codeine phosphate tablets without the need of consulting a medical doctor or other Health care Skilled. take medicines identified as "nitrates" (for example nitroglycerin) use Avenue medicines identified as "poppers" for instance amyl nitrate or amyl nitrite, and butyl nitrate https://qualitypharmaceuticalsonline.com/codeine-phosphate-30mg/