Achilles tendonitis is better with tylenol, (acetaminophen) motrin, or aleve?

No right answer. All are pain relievers. Motrin and Aleve also reduce inflammation and are similar drugs. I believe that taking drugs like Motrin may prevent healing of a tendon injury since the body uses inflammation to help stimulate healing. Therefore, tylenol (acetaminophen) might be a better first choice, along with ice and rest followed by a physical therapy program if not improving on it's own.
Relieve only symptom. They all provide symptomatic relief. Pt is the key in non insertional type of the condition.

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Which is most effective for pain from a surgical wound: aleve, motrin, or tylenol (acetaminophen)?

Combo. Usually naprosyn or Ibuprofen in combination with tylenol (acetaminophen) work well. Use prescription narcotics as needed, but make sure not to take too much tylenol (acetaminophen), because many of the prescription narcotics are already combined with that. Read more...

Only OTC medication I have found to help pain of Achilles tendonitis is aleve (naproxen). However, I have to take 600 mg. Is that safe on a regular basis?

Yes for short period. Of time, like 4-7 days or so. All nsaids are not recommended for anyone with kidney problems. Normal dose of aleve (naproxen) is 220 or 250 mg twice a day. For short periods of time up to 1000 mg maybe used. I would recommend pt for stretching and splint. If no improvement after 6 weeks, then maybe a MRI might be needed to evaluate the status of the achilles tendon. Read more...
Ice and . Physical therapy might enable you to reduce the dosage. Alleve is a lower dosage than naprosyn (naproxen) which is usually prescribed at 500mg twice daily. Speak to your doctor about your current dose. Read more...