Aspirin: Uses, Dosage, Side Effects & Safe Buying Guide

Got a headache, sore muscles, or need to protect your heart? Aspirin is the over‑the‑counter drug that shows up for all of those. It’s cheap, easy to find, and works fast for most people. But like any medicine, you need to know how to take it right and what to watch out for.

How Aspirin Works

Aspirin belongs to a family called NSAIDs – non‑steroidal anti‑inflammatory drugs. It blocks an enzyme named COX that makes prostaglandins, the chemicals that cause pain, fever, and inflammation. By cutting down those chemicals, you feel less ache and your temperature drops.

At lower doses (usually 81 mg), aspirin also thins your blood a bit. It stops platelets from clumping together, which lowers the risk of clots forming in arteries. That’s why doctors often prescribe it to people who have had a heart attack or stroke, or those with high cardiovascular risk.

When to Use Aspirin Safely

If you’re an adult without bleeding problems, a typical dose for pain or fever is 325–650 mg every four to six hours. Don’t exceed 4 g in one day – that’s the safety ceiling most guidelines set.

For heart‑health protection, many Canadians take a “baby aspirin” of 81 mg once daily. Your doctor will tell you if that’s right for you based on your age, medical history, and other meds.

Aspirin isn’t for everyone. If you have ulcers, frequent stomach bleeding, or are allergic to NSAIDs, skip it. Pregnant women in their third trimester should also avoid it because it can affect the baby’s blood clotting.

Mixing aspirin with other blood thinners (like warfarin or clopidogrel) bumps up bleed risk dramatically. Same story with alcohol – even a couple of drinks can irritate your stomach lining when you’re on aspirin.

When you buy aspirin online, stick to reputable Canadian pharmacies that require a prescription for higher‑dose forms and show clear contact info. Look for sites that display a physical address, phone number, and a pharmacist’s name. Read the product label – it should list the exact strength, expiration date, and any extra ingredients.

Store aspirin in a cool, dry place away from children. If you notice black stools, unusual bruising, or severe stomach pain, stop taking it and call your doctor right away.

Bottom line: aspirin can be a handy ally for everyday aches and heart protection, but only when you respect the dose and know your own health limits. Use it responsibly, check with a pharmacist if you’re unsure, and you’ll get the relief you need without unnecessary risks.