How to Prepare for PRP Therapy — A Patient’s Guide

Proper preparation can make a meaningful difference in the quality of your platelet-rich plasma (PRP) therapy and the speed of your recovery. Unlike many medical procedures that require fasting or extensive pre-operative testing, PRP preparation is straightforward — but there are several important steps you should follow in the days and weeks leading up to your appointment. This guide walks you through everything you need to know so you arrive feeling confident and ready.

Two Weeks Before Your Appointment

The most important step in preparing for PRP therapy begins two full weeks before your scheduled injection. During this period, you need to stop taking non-steroidal anti-inflammatory drugs (NSAIDs), including ibuprofen (Advil, Motrin), naproxen (Aleve), and aspirin. These medications work by suppressing platelet function — the very mechanism that PRP relies on to promote healing. Taking NSAIDs in the days before your treatment can significantly reduce the effectiveness of your platelets and compromise the quality of your PRP preparation.

If you need pain relief during this period, acetaminophen (Tylenol) is generally considered safe because it does not affect platelet function. However, you should always confirm this with your treating physician before making any changes to your pain management routine.

If you are currently taking prescription blood thinners such as warfarin, clopidogrel, or any direct oral anticoagulants, do not stop these medications on your own. Contact your prescribing physician and your PRP provider to discuss a safe plan for temporarily adjusting your medication. Stopping blood thinners without medical supervision can carry serious health risks, so this conversation should happen well in advance of your appointment.

One Week Before Your Appointment

In the week leading up to your PRP treatment, you should discontinue any supplements that are known to affect blood clotting or platelet activity. These include:

• Fish oil (omega-3 fatty acids) — has a mild blood-thinning effect that can interfere with platelet aggregation.
• Vitamin E — high doses can impair platelet function and increase bleeding time.
• Turmeric and curcumin supplements — possess anti-inflammatory and antiplatelet properties that may reduce PRP effectiveness.
• Garlic supplements — concentrated garlic can inhibit platelet aggregation. Normal dietary garlic in cooking is generally fine.
• Ginkgo biloba and ginseng — both can affect blood clotting and should be paused before treatment.

You should also avoid alcohol during this week. Alcohol acts as a blood thinner, can dehydrate your body, and may impair your immune system’s response — all of which can reduce the quality of your PRP and your body’s ability to heal after the injection.

This is also an excellent time to focus on staying well hydrated. Good hydration improves blood volume and makes the blood draw easier, while also supporting overall platelet health. Aim for at least eight glasses of water per day throughout the week.

Two to Three Days Before Your Appointment

In the final days before your PRP treatment, shift your focus toward optimizing your body’s readiness. Increase your water intake beyond your normal levels — well-hydrated blood yields a higher-quality PRP preparation with a better concentration of platelets. Think of it this way: the better the raw material, the more effective the treatment.

Prioritize iron-rich foods in your meals during this period. Iron supports healthy red blood cell production and overall blood quality. Good sources include:

• Lean red meat, poultry, and fish
• Dark leafy greens such as spinach and kale
• Lentils, chickpeas, and other legumes
• Fortified cereals and whole grains
• Eggs and tofu

Getting adequate sleep during these final days is equally important. Your body performs much of its cellular repair and immune regulation during sleep, and arriving at your appointment well-rested gives your body the best possible foundation for healing. Aim for seven to nine hours of quality sleep each night.

The Day of Your Appointment

On the morning of your PRP treatment, eat a healthy, balanced breakfast. Unlike some medical procedures, PRP therapy does not require fasting. In fact, arriving on an empty stomach can make you feel lightheaded or dizzy during the blood draw. A nutritious meal that includes protein, complex carbohydrates, and healthy fats will help stabilize your blood sugar and keep you comfortable throughout the appointment.

Dress in comfortable, loose-fitting clothing that allows easy access to the treatment area. If you are receiving PRP in your knee or ankle, wear shorts or loose trousers that can be rolled up easily. For shoulder or elbow treatments, a sleeveless top or a shirt with wide sleeves works well. Avoid tight clothing that could restrict circulation or make it difficult for your physician to access the injection site.

If your treatment involves a lower extremity — such as the knee, ankle, or foot — consider arranging for someone to drive you home. While most patients are able to drive after an upper-body PRP injection, lower-extremity treatments may cause temporary soreness or stiffness that makes operating a vehicle uncomfortable for the first few hours.

Continue to drink plenty of water in the hours before your appointment. Being well hydrated makes it easier for the nurse or technician to find a good vein for the blood draw, and it contributes to better-quality plasma.

What to Bring to Your Appointment

Arriving prepared helps your appointment run smoothly and ensures your treatment team has everything they need. Here is a checklist of items to bring with you:

• Your health insurance information — even if PRP is not covered by your plan, your provider may need your insurance details on file for the consultation portion of your visit.
• A complete list of your current medications — including prescription drugs, over-the-counter medications, vitamins, and supplements. This helps your physician confirm that everything has been appropriately adjusted before treatment.
• Comfortable clothing — as described above, with easy access to the treatment area.
• A list of questions for your doctor — write down anything you want to ask about the procedure, recovery timeline, activity restrictions, or follow-up care. Having your questions prepared ensures you don’t forget anything during the appointment.
• Any relevant imaging — if you have recent MRI scans, X-rays, or ultrasound reports that have not already been shared with your provider, bring copies or have them available digitally.
• A driver (if needed) — for lower-extremity treatments, having someone available to drive you home is recommended.

What Happens During the Appointment

Understanding the step-by-step process can help ease any pre-treatment anxiety. Here is what a typical PRP appointment looks like from start to finish:

Step 1: Check-in and review. Your physician will review your medical history, confirm that you have followed the pre-treatment preparation guidelines, and answer any remaining questions you may have.

Step 2: Blood draw. A small sample of blood — typically 30 to 60 millilitres — is drawn from your arm, similar to a routine blood test. This takes just a few minutes.

Step 3: Centrifugation. Your blood is placed in a specialized centrifuge that spins at high speed for approximately 10 to 15 minutes. This process separates the platelet-rich plasma from the red blood cells and other components.

Step 4: Preparation and injection. The concentrated PRP is carefully extracted and drawn into a syringe. Your physician then injects the PRP directly into the injured area, often using ultrasound guidance to ensure precise placement.

Step 5: Post-treatment instructions. After the injection, your care team will provide detailed aftercare guidelines, including activity restrictions, pain management recommendations, and follow-up scheduling. The entire appointment typically lasts 45 to 60 minutes.

Medications to Avoid vs. Medications That Are OK

One of the most common sources of confusion for patients preparing for PRP therapy is knowing which medications need to be stopped and which can be safely continued. Here is a clear breakdown:

Medications to Stop Before PRP

• Ibuprofen (Advil, Motrin) — stop at least 14 days before treatment.
• Naproxen (Aleve) — stop at least 14 days before treatment.
• Aspirin (unless prescribed for cardiac reasons) — stop at least 14 days before treatment. If aspirin has been prescribed by your cardiologist, consult your physician before discontinuing.
• Celecoxib (Celebrex) — stop at least 7–14 days before treatment.
• Oral corticosteroids — discuss tapering with your physician if you are currently taking these.

Medications Generally Safe to Continue

• Acetaminophen (Tylenol) — safe for pain relief as it does not affect platelet function.
• Blood pressure medications — continue taking as prescribed unless your physician advises otherwise.
• Thyroid medications — continue taking as prescribed.
• Most prescription medications — unless specifically advised by your PRP provider, continue your regular prescription medications. Always bring a full medication list to your appointment so your physician can review it.

Foods and Supplements That Optimize Platelet Quality

What you eat in the days leading up to your PRP treatment can influence the quality of your platelets and the overall effectiveness of the therapy. A nutrient-rich diet supports robust platelet production and function. Focus on incorporating the following into your meals:

• Vitamin C–rich foods — citrus fruits, strawberries, bell peppers, and broccoli support collagen synthesis and immune function.
• Iron-rich foods — lean meats, spinach, lentils, and fortified grains help maintain healthy blood cell production.
• Vitamin B12 and folate — found in eggs, dairy, leafy greens, and legumes, these nutrients are essential for healthy blood cell formation.
• Lean protein — chicken, fish, beans, and tofu provide the amino acids your body needs for tissue repair and platelet production.
• Zinc-rich foods — pumpkin seeds, nuts, whole grains, and shellfish support immune function and wound healing.
• Water — adequate hydration is one of the simplest and most impactful things you can do. Dehydrated blood yields lower-quality PRP.

Frequently Asked Questions

Do I need to fast before PRP therapy?

No. You should eat a healthy meal before your appointment. Fasting is not required and can actually make the blood draw more difficult by lowering your blood pressure and blood sugar levels.

Can I drink coffee on the morning of my treatment?

A moderate amount of coffee is generally fine, but avoid excessive caffeine as it can contribute to dehydration. Make sure to drink plenty of water alongside your coffee.

What if I accidentally took ibuprofen within the two-week window?

Contact your PRP provider as soon as possible. Depending on when you took the medication and the dosage, your physician may recommend rescheduling your appointment to ensure optimal platelet function.

Can I exercise the day before my PRP appointment?

Light to moderate exercise the day before is generally acceptable. However, avoid intense or prolonged workouts that could cause excessive fatigue, dehydration, or inflammation. A gentle walk, light stretching, or easy yoga are all good options.

How long does the entire PRP appointment take?

Most PRP appointments take between 45 and 60 minutes from start to finish. This includes the blood draw, centrifugation, and injection. Plan to be at the clinic for approximately one hour.

Will the injection be painful?

Most patients describe the injection as a brief pressure or mild discomfort. A local anesthetic is often applied to the treatment area beforehand to minimize any pain. The blood draw itself is comparable to a routine lab test.

Is there anything I should avoid eating before my appointment?

Avoid alcohol for at least one week before treatment. On the day of your appointment, avoid heavy, greasy meals that could make you feel sluggish. Opt for a balanced meal with protein, vegetables, and whole grains.