By the Thrive Protocol editorial team. Medically reviewed by Dr. Patrick Denard, orthopaedic surgeon, on October 19, 2026

Short answer: Cover protein first: 1.2 to 1.5 g per kg of body weight a day for older adults, or 96 to 120 g for an 80 kg (176 lb) person (2). Then check vitamin D before surgery, since low levels are linked to more repeat operations after cuff repair (6). Vitamin C has one small, encouraging repair trial. Your nutrition going into surgery matters too: in older patients, poor nutritional status was linked to more repeat tears (17). Creatine is not proven in surgical studies, but it can be an adjunct later if strength is slow to come back.

This page is about supplements: what to buy, how much, and when. For meals, one-handed food ideas and a grocery list, see What to Eat After Rotator Cuff Surgery.

Disclosure: this is Thrive Protocol's own site, and we sell some of the products named below. We grade each option on the published research, including ingredients we use.

Why a cuff repair changes the supplement question

In a rotator cuff repair, the surgeon stitches tendon back onto bone. That attachment is built from collagen, which your body makes from protein and cannot make without vitamin C. At the same time, the shoulder rests in a sling for weeks, and resting muscle shrinks fast. In young men with a leg in a cast, thigh muscle size fell 3.5% and strength fell 9% in just 5 days (1). That study was in legs, not shoulders, but the lesson carries over: the first weeks after surgery are when protein matters most and appetite is often worst.

Your nutrition before surgery may also affect whether the repair holds. In 143 patients aged 65 and over, those with poorer nutritional status before their repair (scored with the Geriatric Nutritional Risk Index, which combines blood albumin and body weight) had about 4 to 6 times the odds of the tendon tearing again within 2 years. Nutritional status and tear size were the only independent predictors of a repeat tear; age was not one of them (17). It was a single-center, look-back study, so it shows a link, not proof that supplements prevent retears. But nutrition is one of the few risk factors you can work on before surgery.

So a cuff repair supplement plan has three jobs. Go into surgery well nourished, feed the tendon-to-bone repair, and limit muscle loss in the shoulder and arm while they are not working.

What to take after rotator cuff surgery: the short list

Supplement Job after a cuff repair How much When Evidence
Protein (whey) Raw material for tendon and muscle Enough to total 1.2 to 1.5 g/kg a day 1 week before through rehab Moderate (indirect)
Vitamin D Correct a low level RDA 600 to 800 IU; more only if low Test at your pre-op visit Limited (cuff studies are observational)
Vitamin C Needed to form collagen 500 mg daily for 45 days after repair From surgery onward Limited (1 small trial)
Leucine Limit muscle loss in the sling weeks 3 g a day 1 week before to about 6 weeks after Limited for cuff (no cuff trials)
Collagen with vitamin C Collagen building blocks 15 g in a lab study; in a 3-month blend in one cuff trial Weeks after repair Limited
Creatine Adjunct for regaining strength 5 g a day Later in recovery, especially if strength is slow to return Not proven in surgical studies

1. Protein: the base of the plan

Why: tendon and muscle are both built from protein. The PROT-AGE group recommends 1.2 to 1.5 g/kg a day for older adults with acute or chronic illness (2).

How much: for an 80 kg adult, 80 x 1.2 = 96 g and 80 x 1.5 = 120 g a day. Split it into about four servings of 25 to 30 g. Spreading protein evenly across meals produced 25% more muscle protein synthesis over 24 hours than piling most of it into dinner (3).

Why a supplement helps here: in the sling weeks, cutting meat, opening jars and cooking all get hard. A shake you can mix with one hand is often the difference between hitting the number and missing it.

Safety: people with severe kidney disease may need to limit protein (2).

2. Vitamin D: test before surgery

What studies found: in an insurance database study of 982 cuff repair patients, those deficient in vitamin D (below 20 ng/mL) had a 5.9% rate of repeat surgery on the same shoulder, versus 3.7% with normal levels (6). The authors noted the absolute difference was small. In 366 shoulder patients, lower vitamin D tracked with more fatty change in the cuff muscles and lower muscle torque (7).

Limits: both studies show links, not cause and effect. No trial has yet shown that taking vitamin D improves cuff healing.

How much: the RDA is 600 IU a day up to age 70 and 800 IU from age 71 (8). Ask for a 25-hydroxyvitamin D blood test so your doctor can correct a low level weeks before surgery, and avoid high doses unless prescribed.

3. Vitamin C: one small repair trial

What studies found: in a randomized study of 98 cuff repair patients, one group took 500 mg of vitamin C daily for 45 days after surgery. At about 6 months, the tendon had not healed on ultrasound in 11% of that group versus 23% of the group without vitamin C. The difference did not reach statistical significance, and function scores were similar (5).

Limits: one small, single-center study. The authors called for a larger trial.

How much: ask your surgeon what amount suits you. Food sources such as citrus, kiwi and peppers count too.

4. Leucine: 3 g a day

Leucine is the amino acid that switches muscle building on, and whey is naturally rich in it. A practical target is 3 g of leucine a day on top of protein-rich meals. We found no amino acid trial in cuff repair patients. The best data come from hip and knee replacement, where a 2025 meta-analysis of 19 studies (903 patients) found protein and amino acids reduced muscle loss, with mixed effects on strength (4). One of those trials gave essential amino acids from a week before to 6 weeks after surgery (16).

5. Collagen and blends: interesting, not settled

In 8 healthy men, 15 g of vitamin C-enriched gelatin before short exercise doubled a blood marker of collagen production (10). In the cuff itself, one randomized study of 90 patients with large tears tested a blend of arginine alpha-ketoglutarate, methylsulfonylmethane, hydrolyzed collagen and bromelain for 3 months after repair. The supplement group reported less pain at 6 months and slightly better repair integrity on MRI, but function scores did not differ (9). Limits: one blend, one center, short follow-up, so no single ingredient gets the credit.

6. Creatine: an adjunct, not proven in surgery

Creatine has not been proven in surgical studies, but it can be a useful adjunct to rehab. In 22 healthy volunteers whose leg was in a cast for 2 weeks, creatine taken during 10 weeks of retraining helped muscle size and power recover faster (11). A meta-analysis of 22 trials in older adults found creatine plus resistance training added about 1.4 kg of lean mass (12). Neither was in shoulder patients. The usual amount is 5 g a day. If you are later in your recovery and struggling with regaining strength, it is also worthwhile considering. Ask first if you have kidney disease.

Week-by-week: what to take and when after a cuff repair

Time Your shoulder Supplement focus
2 to 4 weeks before Pre-op visit Vitamin D test. Written list of every supplement for your surgeon.
1 week before Last weeks with two good hands Start daily protein shake and amino acids. Set up a one-handed supplement station (below).
Days 1 to 14 Sling on, nerve block wearing off, poor sleep Protein shake on the days meals fall short. Vitamin C if your surgeon agrees.
Weeks 2 to 6 Sling, passive motion with your therapist Keep protein near 1.2 to 1.5 g/kg every day. This is the longest stretch of low activity.
Weeks 6 to 12 Sling off, active motion Protein within a couple of hours after therapy.
Month 3 onward Strengthening Keep protein up. Creatine, 5 g a day, is worth considering if strength is slow to return.

Timing varies with tear size and your surgeon's protocol, so match these phases to your own rehab plan.

The one-handed supplement station

This is the practical problem nobody plans for: you will open everything with your non-operated hand for several weeks, and it may be your weaker hand. Before surgery:

  • Swap childproof bottles for easy-open caps or a weekly pill organizer you can flip with a thumb.
  • Choose single-serve packets or a pump-top container over tubs that need a scoop and a second hand.
  • Leave a shaker bottle and a filled water jug at counter height, next to the chair or recliner where you will spend the most time.
  • Pre-tear packet corners, or keep blunt scissors on the counter.
  • Write your plan on a card: what, how much, what time. Pain medicine makes it easy to lose track.

Individual supplements vs an all-in-one kit

Option What it covers for a cuff repair What it leaves out One-handed? Price
Separate products (whey, vitamin C, vitamin D, leucine, later creatine) Each item at a dose you choose Depends on what you buy 4 to 5 lids and scoops Varies by brand
Surgical Protocol Kit OptiFuel packet: 25 g protein (whey plus hydrolyzed collagen), 3 g leucine, glutamine, 500 mg vitamin C, 800 IU vitamin D, plus magnesium, calcium, B vitamins, fish oil and turmeric extract. OptiCharge for the night before Creatine, zinc, iron 1 packet in a shaker 4-week $299.99, 3-month $499.99, 6-month $669.99
Recovery Protocol Kit Same OptiFuel, no OptiCharge Creatine, zinc, iron 1 packet in a shaker 4-week $289, 3-month $499, 6-month $669
Recovery and Strength Mix Per scoop: creatine 5 g, leucine 3 g, glutamine 2.5 g, arginine 2 g, isoleucine 1.75 g, valine 1.75 g Whole protein, vitamins 1 scoop $49.99

Creatine and arginine are only in the Recovery and Strength Mix. If you already take vitamin D, check your total with your doctor, since each OptiFuel packet adds 800 IU.

Supplement safety before shoulder surgery

  • Fish oil, curcumin or turmeric, ginkgo, garlic, vitamin E and similar supplements can affect bleeding (14). Your surgeon sets the stop dates before surgery. In a large heart surgery trial, perioperative fish oil did not increase major bleeding (13), but follow your own team's list.
  • OptiFuel contains fish oil and turmeric. There is no need to stop OptiFuel before surgery, but your own surgeon's instructions always come first.
  • Some high-bioavailability curcumin products have been linked to liver injury (15). Give your anesthesiologist a full list with doses.

Where to get it

  • Repair scheduled: the Surgical Protocol Kit. Start 1 week before surgery so you can learn the shaker routine while you still have two hands. OptiCharge is for the night before. 4-week $299.99, 3-month $499.99, 6-month $669.99.
  • Already in the sling: the Recovery Protocol Kit, the same daily OptiFuel packet. 4-week $289, 3-month $499, 6-month $669.
  • Strengthening phase: the Recovery and Strength Mix, $49.99. Ideally, everyone on a kit also takes the Recovery and Strength Mix daily.

Thrive Protocol kits are HSA/FSA eligible, so you can use pre-tax health dollars. Check with your surgeon before starting.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Want the whole plan on one page? Get the free Surgery Recovery Guide.

Frequently asked questions

What are the best supplements after rotator cuff surgery?

Protein has the strongest general support, and vitamin D is worth testing because low levels are linked to repeat surgery. Vitamin C has one small, encouraging cuff trial. Creatine is not proven in surgical studies, but it can be an adjunct later in recovery if regaining strength is a struggle.

Does vitamin C help rotator cuff healing?

Possibly. In a 98-patient trial, fewer repairs failed to heal with vitamin C (11% vs 23%), but the difference was not statistically significant. Ask your surgeon about the amount.

Does nutrition affect rotator cuff healing?

It may. In a 2024 study of 143 patients aged 65 and over, poorer nutritional status before surgery was linked to about 4 to 6 times the odds of a repeat tear within 2 years, and it predicted retears independently of age. Eating enough protein before and after surgery is one of the few risk factors you can change.

Should I take collagen after rotator cuff surgery?

It is reasonable as extra protein, but cuff evidence is limited to one blend trial. Collagen should add to complete protein like whey, not replace it.

How long should I take supplements after rotator cuff repair?

Most of the useful window runs from a week before surgery through the sling and early motion phase, about 3 months. Protein matters through strengthening too.

Can I take supplements with one arm in a sling?

Yes, with setup. Use easy-open caps, single-serve packets and a shaker at counter height, and ask someone to pre-open anything stiff.

Related reading

References

  1. Wall BT, et al. Substantial skeletal muscle loss occurs during only 5 days of disuse. Acta Physiol (Oxf). 2014. PubMed 24168489
  2. Bauer J, et al. Evidence-based recommendations for optimal dietary protein intake in older people (PROT-AGE). J Am Med Dir Assoc. 2013. PubMed 23867520
  3. Mamerow MM, et al. Dietary protein distribution positively influences 24-h muscle protein synthesis in healthy adults. J Nutr. 2014. PubMed 24477298
  4. Khani Y, et al. Peri-operative protein or amino acid supplementation for total joint arthroplasty: a systematic review and meta-analysis. J Orthop Surg Res. 2025. PubMed 40317042
  5. Martel M, et al. Does vitamin C supplementation improve rotator cuff healing? A preliminary study. Eur J Orthop Surg Traumatol. 2022. PubMed 33725178
  6. Cancienne JM, et al. Perioperative serum 25-hydroxyvitamin D levels affect revision surgery rates after arthroscopic rotator cuff repair. Arthroscopy. 2019. PubMed 30704888
  7. Oh JH, et al. The level of vitamin D in the serum correlates with fatty degeneration of the muscles of the rotator cuff. J Bone Joint Surg Br. 2009. PubMed 19949122
  8. Ross AC, et al. The 2011 report on dietary reference intakes for calcium and vitamin D from the Institute of Medicine. J Clin Endocrinol Metab. 2011. PubMed 21118827
  9. Gumina S, et al. Arginine L-alpha-ketoglutarate, methylsulfonylmethane, hydrolyzed type I collagen and bromelain in rotator cuff tear repair: a prospective randomized study. Curr Med Res Opin. 2012. PubMed 23043451
  10. Shaw G, et al. Vitamin C-enriched gelatin supplementation before intermittent activity augments collagen synthesis. Am J Clin Nutr. 2017. PubMed 27852613
  11. Hespel P, et al. Oral creatine supplementation facilitates the rehabilitation of disuse atrophy and alters the expression of muscle myogenic factors in humans. J Physiol. 2001. PubMed 11600695
  12. Chilibeck PD, et al. Effect of creatine supplementation during resistance training on lean tissue mass and muscular strength in older adults: a meta-analysis. Open Access J Sports Med. 2017. PubMed 29138605
  13. Akintoye E, et al. Fish oil and perioperative bleeding. Circ Cardiovasc Qual Outcomes. 2018. PubMed 30571332
  14. Wang CZ, et al. Commonly used dietary supplements on coagulation function during surgery. Medicines (Basel). 2015. PubMed 26949700
  15. National Center for Complementary and Integrative Health. Turmeric: usefulness and safety. nccih.nih.gov/health/turmeric
  16. Dreyer HC, et al. Essential amino acid supplementation mitigates muscle atrophy after total knee arthroplasty. JB JS Open Access. 2018. PubMed 30280129
  17. Shitara H, et al. Preoperative nutrition impacts retear rate after arthroscopic rotator cuff repair. J Bone Joint Surg Am. 2024;106(22):2111-2118. PubMed 39213337

This guide is for education and does not replace advice from your surgeon or care team. Product details checked against mythriveprotocol.com product pages on 18 October 2026.