Statins are widely prescribed cholesterol-lowering medications with clear benefits for the heart, but they can occasionally cause side effects, including musculoskeletal pain. One link gaining increasing attention is between Achilles tendonitis and statins, including a possible association with rosuvastatin. As a sports medicine doctor, I see patients who develop unexpected tendon pain while taking a statin. So, if you develop tendon pain on a statin, what should you do?
Important: never stop a prescribed statin without first speaking to your doctor. Statins substantially reduce the risk of heart attacks and strokes, and that benefit has to be weighed against any tendon concerns. This page is for information — decisions about your medication should always be made with your prescribing doctor.
[KEEP OR ADD an image here — alt: “Statin tablets and an inflamed Achilles tendon”.]
What are statins?
Statins lower cholesterol and reduce the risk of heart attacks and strokes. They’re among the most commonly prescribed medications in the UK, given to people with high cholesterol, cardiovascular disease, diabetes, or other risk factors. For most people who need them, the cardiovascular benefits are significant and well proven.
What is Achilles tendonitis?
Achilles tendonitis is inflammation and degeneration of the Achilles tendon, the strong band of tissue connecting the calf muscles to the heel bone. It typically causes pain and stiffness at the back of the ankle, worse in the morning and with activity, sometimes with thickening or swelling of the tendon. The usual cause is overload, with risk factors including a sudden increase in training, higher body weight, diabetes, and high cholesterol.
Can statins cause Achilles tendonitis?
Statin-induced muscle problems (myopathy) are well recognised. Less certain, but increasingly reported, is an effect on tendons.
Several case reports and observational studies suggest statins may increase the risk of tendinitis and, rarely, tendon rupture — particularly of the Achilles tendon:
- Marie and colleagues (2008) described a case series of tendon complications associated with statins, many of which involved the Achilles tendon.
- Van der Linden and colleagues (2009) reported a small but measurable increase in Achilles tendinopathy and rupture in statin users compared with non-users.
- A review in the American Journal of Sports Medicine (2015) concluded that, while rare, clinicians should consider statins as a possible cause of otherwise unexplained tendinopathy — especially if symptoms start soon after beginning the medication.
- A large nationwide cohort study from Korea (2023) found statin use was associated with an increased risk of tendonitis across most statin types.
It’s important to keep this in perspective. The absolute risk is low, the evidence is mixed (some large studies find no clear link with tendon rupture), and the association appears strongest in the early months of treatment.
How might statins affect tendons?
The exact mechanism is uncertain, but laboratory work offers clues. Statins appear to increase the release of enzymes called matrix metalloproteinases (such as MMP-1 and MMP-13) in tendon tissue. These enzymes break down the collagen matrix, which can weaken the tendon’s structure. Statins may also slow the production and movement of the tendon cells that repair day-to-day damage — potentially reducing how well a tendon recovers after exercise.
Rosuvastatin and tendonitis
Rosuvastatin is one of the statins named in case reports of tendon problems. However, the evidence isn’t clear-cut. In the large 2023 Korean cohort study, when the statins were analysed separately, rosuvastatin did not significantly increase the risk of Achilles tendinitis — unlike some other statins. So, while a link is biologically plausible and has been reported in individual cases, rosuvastatin’s specific association with Achilles tendonitis is not well established. If you develop tendon pain on rosuvastatin, it’s worth discussing with your doctor rather than assuming the drug is responsible.
What to do if you develop tendon pain on a statin
The most important message: don’t stop your statin on your own. Instead:
- Speak to your prescribing doctor. They can weigh the cardiovascular benefit against the tendon problem, and decide whether to continue, adjust the dose, switch to a different statin, or pause it under supervision.
- Get the tendon assessed. Not all Achilles pain on a statin is caused by the statin — overload is far more common, and the two can coexist. An accurate diagnosis matters.
- Mention the timing. Tendon problems linked to statins often appear within the first year, sometimes the first few months — so tell your doctor when the pain started relative to starting the medication.
Also, let your doctor know if you’re taking other medications linked to tendon problems, such as fluoroquinolone antibiotics or oral corticosteroids, as the risks may add up.
Treatment of statin-associated Achilles tendonitis
Whatever the trigger, the treatment of Achilles tendonitis follows the same principles. A progressive calf and Achilles strengthening programme is the mainstay. Load modification, heel raises, and simple pain relief help settle symptoms, and stubborn cases may benefit from adjuncts such as shockwave therapy. Alongside this, your doctor reviews whether the statin (or another medication) is contributing and manages it accordingly.
Frequently asked questions about statins and tendonitis
Do statins cause tendonitis?
Statins are associated with an increased risk of tendonitis, especially in the early months of treatment, and the effect is biologically plausible (statins can weaken the tendon’s collagen matrix). But the absolute risk is low, and the evidence is mixed — many people take statins without any tendon problems.
Should I stop my statin if I get Achilles pain?
No, not without medical advice. Statins meaningfully reduce heart attacks and strokes, so stopping one carries its own risk. See your prescribing doctor, who can weigh up the options and decide whether to continue, adjust, switch, or pause the statin.
Does rosuvastatin cause tendonitis?
Rosuvastatin appears in individual case reports, but in the largest cohort study to date, it did not significantly raise the risk of Achilles tendinitis when analysed on its own. So the specific link is not well established — discuss any tendon pain with your doctor rather than assuming the drug is the cause.
How soon after starting a statin can tendon problems appear?
Usually within the first year, and sometimes within the first few months. The risk seems highest early on, and in some studies,s the difference from non-users had faded by around six months.
Can I keep taking statins if I have Achilles tendonitis?
Often, yes — under your doctor’s guidance. Achilles tendonitis is usually treatable with rehabilitation regardless of the cause, and the decision about the statin is individual, balancing your heart risk against the tendon symptoms.
Are statin-related tendon problems permanent?
Usually not. Most people improve with tendon rehabilitation, alongside a medication review by their doctor. Serious complications such as rupture are rare.
Final word from Sport Doctor London about Achilles tendonitis and statins
Statins are important, effective medications, and for most people, the heart benefits clearly outweigh the low risk of tendon problems. There’s a plausible, increasingly reported link between statins and Achilles tendonitis — strongest in the early months — but the evidence is mixed, and the specific association with rosuvastatin is uncertain. If you develop tendon pain on a statin, don’t stop it on your own: see your doctor to weigh things up, and get the tendon properly assessed and treated.
If you have Achilles pain, Dr Masci can assess you in London, including an ultrasound in the clinic, and work alongside your GP or cardiologist. Contact the team here or call +44 (0) 203 488 0350.
This page is for general information and isn’t a substitute for personal medical advice. Never start, stop, or change a prescribed medication without speaking to your doctor.
After quitting Rosuvastatin, how long before I can anticipate recovery and pain reduction?
For muscle aches (statin-associated myalgia), you should notice a clear improvement within 2-4 weeks, with near-complete resolution within 6 weeks. Tendon symptoms often lag behind muscle recovery, with meaningful improvement after 8 weeks and complete settling at 3 months. However, tendon pain can take much longer to develop, depending on the extent of tendon degeneration.
My doctor, Dr. Ascunce, at what is supposed to be a top medical center, New York Presbyterian Cornell Medical Center doubted that achilles tendonitis is related to statin use, so she needs to brush up on some medical literature.
Thank you for your comment — and I completely understand your frustration.
Hi James, Unfortunately, awareness of this association remains low in the medical community, even among physicians at leading institutions. The link between statin use and tendinopathy is well documented in the literature, and it is something clinicians should be aware of.
That said, it is worth emphasising that taking a statin is a risk factor for developing tendinopathy — but it is not the only one. Age, physical activity levels, local biomechanical factors, and other medications can all contribute. The statin does not cause tendinopathy in everyone who takes it, but it can significantly increase the risk, particularly in the Achilles tendon. In some cases, it can be the leading cause.