The DTaP and Tdap vaccines both protect against three bacterial infections: diphtheria, tetanus and pertussis, whereas the Td vaccine only protects against diphtheria and tetanus. In addition, the vaccines vary in terms of who should receive them and the quantities of vaccine proteins they contain: 1  DTaP: The DTaP vaccine is given to infants and young children in a series of five shots â at 2 months, 4 months, 6 months, 15 to 18 months, and again at 4 to 6 years of age. Tdap: The Tdap vaccine is different from the DTaP vaccine because it contains lesser quantities of diphtheria and pertussis proteins.
1 To prevent a heart attack, take two low-dose (81 mg) aspirin every day if youâre at risk or over 40.  If you think youâre having a heart attack, take 325 mg of aspirin, and make sure to chew the aspirin before swallowing, because it gets into the bloodstream quicker.
Low-dose aspirin (81 mg) is the most common dose used to prevent a heart attack or a stroke. But the dose for daily aspirin can range from 81 mg to 325 mg.One low-dose aspirin contains 81 mg. One adult-strength aspirin contains about 325 mg. For low-dose aspirin therapy, do not take medicines that combine aspirin with other ingredients such as caffeine and sodium.our doctor has probably already prescribed low-dose aspirin for you. For people who have had a stroke: Aspirin can help prevent a second stroke or a transient ischemic attack (TIA) , which is often a warning sign of an impending stroke.