Getting rid of tendonitis requires a combination of short-term pain management and longer-term tendon strengthening, and the process typically takes anywhere from a few weeks to several months depending on how long you’ve had symptoms. The single most important thing to understand: rest alone won’t fix it. Tendons need carefully managed loading to heal properly.
Before diving into treatment, it helps to know what’s actually happening inside the tendon, because the answer shapes everything you do next.
Why Your Tendon Hurts
True tendonitis is an acute inflammatory response, usually from a sudden spike in activity. The tendon is swollen and painful but structurally intact. This is the version most people picture, and it’s also the easier one to resolve.
The trickier situation is tendinosis, where the tendon’s collagen fibers have started to break down and degenerate over time. The tendon becomes thickened, stiff, and less elastic. This often develops when early tendon pain is ignored or managed only with rest and painkillers without addressing the underlying weakness. An ultrasound can distinguish between the two: inflammation shows up differently from degenerative changes. If your pain has lingered for more than six to eight weeks, there’s a reasonable chance some degree of degeneration is involved.
The distinction matters because treatments that help acute inflammation (like complete rest) can actually make chronic tendon degeneration worse. Tendons maintain their strength through regular mechanical loading. Too little stress, sometimes called “stress shielding,” leads to weakening and further breakdown over time. Too much stress, too quickly, causes micro-injuries. Recovery is about finding the sweet spot.
The First Few Days: Protect Without Overdoing Rest
In the first one to three days after a flare-up, the goal is to reduce pain and prevent further aggravation without shutting the tendon down completely. Restrict movements that provoke sharp pain, but don’t immobilize the area for longer than necessary. Prolonged rest compromises tissue strength and quality. Let your pain level guide when to start reintroducing gentle movement.
Compression and elevation (keeping the limb above heart level) can help manage swelling in the early phase. The more interesting recommendation from current sports medicine thinking is to avoid reaching for anti-inflammatory medications right away. The inflammatory process, while uncomfortable, plays an active role in tissue repair. Anti-inflammatory drugs may interfere with the early healing signals your body uses to lay down new collagen and rebuild blood supply to the area. That doesn’t mean you should never take them, but reflexively popping ibuprofen for weeks isn’t the straightforward fix it seems. Research published in the Journal of Applied Physiology found that short-term ibuprofen treatment had no measurable effect on collagen production or growth factor activity in chronically damaged tendons, suggesting the drugs aren’t doing much for the tendon itself in longer-standing cases.
Ice follows a similar logic. It numbs pain effectively, but the evidence that it speeds healing is weak, and it may slow down the immune cell activity that kicks off repair.
Exercise Is the Treatment
This is the part most people don’t expect. The strongest evidence for resolving tendonitis, and especially tendinosis, points to progressive loading exercises rather than passive treatments. Your tendon needs to be stressed in a controlled way to stimulate collagen repair and regain its ability to handle force.
Isometric Holds for Immediate Pain Relief
Isometric exercises, where you contract a muscle without moving the joint, can provide quick pain relief and serve as a starting point when the tendon is too irritated for dynamic movement. For patellar tendonitis (jumper’s knee), for example, this might mean holding a wall sit at a specific angle. For the Achilles, it could be a sustained calf raise hold.
Research on patellar tendonitis found that both 10-second and 40-second isometric holds produced an immediate pain reduction of nearly 2 points on a 10-point scale. Results for Achilles tendonitis were more mixed, with some people getting relief and others experiencing a temporary increase in pain, so it’s worth experimenting with the duration and intensity that works for your specific situation. These holds are useful as a daily pain-management tool while you build toward more demanding exercises.
Eccentric Loading for Long-Term Repair
Eccentric exercises, where the muscle lengthens under load, are the backbone of most tendon rehabilitation programs. The classic example is the Alfredson protocol for Achilles tendonitis: you rise up on both feet, then slowly lower on the injured side only. The original protocol calls for 90 repetitions per day (split into sets), performed twice daily. Abbreviated versions using around 45 repetitions exist but tend to produce weaker results.
For lateral elbow tendonitis (tennis elbow), the eccentric equivalent involves slowly lowering a light weight with your wrist extended. For patellar tendonitis, single-leg decline squats are commonly used. The key across all of these is the “slow lowering” portion of the movement, which forces the tendon to absorb and transmit force in a way that stimulates organized collagen repair.
Expect to do these exercises daily for at least 12 weeks before judging whether they’ve worked. Mild discomfort during the exercise is acceptable and even expected. Sharp or worsening pain is a signal to reduce the load. Progress by adding weight gradually, not by increasing speed or repetitions dramatically.
Nutrition That Supports Tendon Healing
Tendons are made primarily of collagen, and you can give your body better raw materials for repair. Research from UC Davis found that consuming 5 to 15 grams of gelatin (or hydrolyzed collagen) along with about 50 milligrams of vitamin C, taken one hour before exercise, increased the amino acid building blocks available for collagen synthesis. The timing matters: blood levels of these amino acids peak about 60 minutes after consumption, so taking the supplement an hour before your rehab exercises means the building blocks arrive at the tendon when it’s being stimulated to repair.
You can get this from collagen powder mixed into a drink, or even from regular gelatin dissolved in juice (orange juice covers the vitamin C requirement neatly). It’s not a miracle cure, but it’s a low-cost, low-risk addition to a loading program.
When Exercises Aren’t Enough
If three to six months of consistent rehab exercises haven’t resolved your symptoms, several clinical options exist.
Shockwave therapy uses sound wave pulses directed at the tendon to stimulate blood flow and tissue remodeling. Most protocols involve three to four sessions spaced one to two weeks apart, and the overall recovery rate for chronic tendonitis is estimated at around 80%. It’s noninvasive and increasingly available through physiotherapy and sports medicine clinics. Mild soreness after sessions is normal.
Platelet-rich plasma (PRP) injections use concentrated growth factors from your own blood, injected directly into the damaged tendon. A meta-analysis of 15 randomized trials covering over 2,700 patients with rotator cuff tendonitis compared PRP to corticosteroid injections. In the first few weeks, steroid injections provided slightly better pain relief. But by four to six months, PRP showed significantly greater improvement in function. The takeaway: steroids work faster but PRP appears to produce better medium-term outcomes.
Corticosteroid injections deserve a specific caution. They’re effective at reducing pain in the short term, but repeated injections can weaken tendon tissue and increase the risk of rupture. Most guidelines now limit steroid injections to one or two per site and recommend them primarily as a bridge to allow you to start a loading program, not as a standalone treatment.
Preventing Recurrence
Tendonitis tends to come back if the underlying cause isn’t addressed. The most common trigger is a sudden change in load: ramping up running mileage too quickly, starting a new sport, increasing weight training volume without adequate progression, or returning to full activity after a period of inactivity. A general guideline is to increase training volume by no more than 10% per week.
Tendons also suffer when joints are repeatedly pushed to their end range under high force. Think deep overhead pressing with heavy weight, or sprinting in shoes that force extreme ankle positions. This type of compressive loading reduces the tendon’s ability to handle tension and makes micro-injuries more likely.
The flip side is equally important. Tendons that aren’t loaded enough become weaker over time. If you’ve been sedentary due to pain and then jump back into full activity, the tendon’s capacity will be well below what you’re asking of it. Gradual, consistent loading is both the treatment and the prevention. Maintaining a simple tendon-loading routine (calf raises, wrist curls, or whatever targets your problem area) a few times per week, even after symptoms resolve, is the most reliable way to keep tendonitis from returning.