There is almost no downtime after a PRP injection, but that is not the same as being better. Most people walk out, drive themselves home, and return to desk work the same day or the next. What takes time is healing, not recovery: expect a sore flare for the first few days, easing through weeks one and two, with meaningful tissue change over roughly six to twelve weeks. The mistake that wastes the treatment is loading the tendon hard in week two because the pain has gone quiet. Pain settling and tissue healing are not the same clock.
Two different questions get answered with the same number on most websites. How long are you laid up, and how long until the thing actually works. They have very different answers.
The timeline, week by week
Days one to four: the flare
A deep ache in the treated area, often worse than the pain you came in with, usually peaking around 48 hours. Ice and relative rest, paracetamol if you need it, and no anti-inflammatories unless we have told you otherwise, because blunting the inflammatory response blunts the mechanism. You can walk, drive and work. What you should not do is test the tissue to see how it feels, which is the single most common mistake in this window.
Weeks one to two: quiet, and deceptive
The flare settles and many people feel better than they did before treatment. This is the dangerous stretch. The platelets have triggered a cascade, but the collagen remodelling that actually changes the tendon has barely begun, so the tissue is nowhere near its eventual strength. Feeling good at week two is not evidence of healing at week two. This is the point where a controlled progression matters and where enthusiasm costs people their result.
Weeks three to six: the work starts
This is when loading becomes the treatment rather than the risk. Progressive, specific loading is what turns a biological signal into stronger tissue, and it is prescribed rather than improvised. Most patients are noticeably better in this window, and some are fully back depending on the tissue and the problem. If you are not improving at all by six weeks, that is worth reviewing rather than waiting out, because it can mean the diagnosis or the dose needs revisiting.
Weeks six to twelve: the honest horizon
Meaningful tissue change accrues over this period, which is why we assess results at these intervals rather than at two weeks. Some conditions need a second treatment, and that decision is made on how you have responded rather than booked in advance. You can see how dose affects the odds on is PRP worth it, the full protocol on the PRP therapy page, and what PRP costs on our PRP cost page.
What you can do, and when
General guidance only. Your plan is specific to your tissue and is given to you at the time of injection.
- Same day: walking, driving yourself home, desk work
- Days one to four: gentle movement, ice, avoid anti-inflammatories, no testing the tissue
- Weeks one to two: normal daily activity, light movement, no hard or explosive loading
- Weeks three to six: progressive prescribed loading, most patients improving
- Weeks six to twelve: return to sport as the tissue allows, reassessed rather than assumed
Before you book, ask
- What is my specific loading progression, for my tissue?
- At what point should I tell you it is not working?
- Will the injection be placed under live ultrasound?
The trap in a no-downtime treatment
Nothing physically stops you doing too much, because nothing hurts enough to stop you. Week two feels like permission and it is not. The plan exists precisely because the tissue cannot tell you when it is ready.
Frequently asked questions
How long is recovery after a PRP injection?
Downtime and healing time are two different things and they get confused constantly. Downtime is close to zero: most people walk out, drive themselves home, and are back at desk work the same day or the next. Healing time is measured in weeks, with a sore flare for the first few days, easing through weeks one and two, and meaningful tissue change accruing over roughly six to twelve weeks. So you are not laid up at any point, but you are also not finished at two weeks, and the plan for what you load and when is what turns the injection into a result.
When can I run or train again after PRP?
It depends on the tissue and the problem, which is why any page that gives one universal number for all PRP should be treated with suspicion. Light daily activity is usually fine immediately. Hard or explosive loading of the treated tissue is not, and the progression back to it is prescribed rather than improvised, typically starting in the three to six week window and building from there. An Achilles, a knee and a rotator cuff each follow their own schedule. You are given a specific plan at the time of injection, and the honest answer to when you can train is the one that comes with your name on it.
How long does PRP take to work?
Most patients notice meaningful change somewhere in the three to six week window, and results continue to accrue over roughly six to twelve weeks. That is slower than a cortisone injection, which is the trade being made: cortisone borrows relief from the future by damping inflammation quickly, while PRP is trying to provoke repair, and repair takes the time that biology takes. If nothing at all has changed by six weeks, that is worth reviewing rather than waiting out, because it can mean the diagnosis, the placement or the dose needs a second look.
Why do I feel worse after PRP before I feel better?
Because a controlled inflammatory response is the mechanism rather than a side effect. You have placed a concentrated biologic into an irritated tendon or joint specifically to provoke a healing cascade, and that cascade announces itself as a deep ache that is often worse than the pain you started with. It commonly peaks around 48 hours and eases over the first week. Ice and relative rest help. Anti-inflammatories are the thing to avoid unless we have told you otherwise, because suppressing the inflammatory response also suppresses the process you paid to start.
Can I go back to work the day after PRP?
For desk work, almost always yes, and many patients go back the same day. For physically demanding work that loads the treated tissue, the answer depends on which tissue was treated and what your job actually requires, and it should be discussed before the injection rather than afterwards. If your work involves overhead lifting and we have treated your shoulder, that needs a plan. Tell us what your day actually looks like at the evaluation. It changes the timing advice, and it is much easier to schedule around in advance than to improvise afterwards.
How many PRP injections will I need?
That is decided by how you respond rather than booked in advance. Some conditions settle with one treatment, some benefit from a second, and the decision point usually sits in the six to twelve week window once there is a real response to judge. Be wary of a course of several injections sold up front before anyone has seen how you respond to the first, because that is a package rather than a plan. We assess at intervals and recommend a second treatment only when the response so far suggests it will add something.
Does the recovery differ between a joint and a tendon?
Yes, and meaningfully. Tendons generally need a longer and more carefully staged loading progression, because the collagen remodelling that makes a tendon stronger responds to graded mechanical load over weeks. A joint treated for osteoarthritis follows a different pattern, where the aim is symptom and function change rather than remodelling a specific structure. This is the main reason a single recovery number for all PRP is misleading, and it is why the plan you are given names your tissue rather than quoting a general timeline.
What slows recovery down?
Loading the tissue hard too early is the big one, and it usually happens in week two when the pain has quieted and the tissue has not yet changed. After that: taking anti-inflammatories through the healing window, skipping the prescribed loading progression entirely, which leaves the biological signal without the mechanical stimulus it needs, and smoking, which impairs healing generally. Poor placement also slows things, and invisibly, which is why every Dynamic PRP+ injection is delivered under live ultrasound rather than by landmark alone.
Get a timeline built around your tissue
Same-week evaluations with Aneesh Garg, DO, CAQ. You leave with a specific loading progression for your tissue and your sport, the intervals we will reassess at, and an honest answer about when you are likely to be back.
Book an Evaluation
1790 30th Street Suite 270 · Boulder, CO 80301 · 303-997-1733