What it is: A fat-soluble hormone that regulates calcium absorption, immune function, and inflammatory responses throughout the body.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Diabetic foot ulcer patients taking 2000 IU daily for 12 weeks reduced infection rates from 45% to 25% (p=0.01, n=120 RCT)
- Dental implant success correlates positively with vitamin D3 levels; severe deficiency associates with 11.1% implant loss versus 3.9-11.4% in sufficient groups (1,462 participants, meta-analysis)
Dosing: 2000-5000 IU once daily (oral)
Cost: $5-$20/month
Best For: Bone fracture healing, surgical wound recovery, immune support during rehabilitation
Vitamin D3 demonstrates consistent benefits across multiple injury recovery contexts. Its role in calcium homeostasis and immune regulation makes it particularly valuable for bone healing and infection prevention during the early post-injury phase.
What it is: An essential mineral critical for protein synthesis, immune cell function, and collagen formation—all crucial for tissue repair.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Diabetic foot ulcer healing: 50 mg/day for 12 weeks reduced ulcer length by 1.5 cm versus 0.9 cm placebo, and width by 1.4 cm versus 0.8 cm placebo (n=60, p=0.02)
- Pressure injury healing rate improved with zinc supplementation (relative risk 1.44, 95% CI 1.01-2.06, p=0.043; meta-analysis of 7 studies, n=651)
Dosing: 15-30 mg elemental zinc once daily (oral)
Cost: $8-$25/month
Best For: Wound healing, pressure injuries, surgical site recovery, chronic ulcers
Zinc's direct involvement in collagen synthesis and immune function makes it one of the most evidence-supported supplements for wound healing-related injuries. It's particularly effective for chronic wounds that may be slower to close.
What it is: A mineral involved in over 300 enzymatic reactions, including muscle function, protein synthesis, and inflammation regulation.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Magnesium oxide 250 mg daily for 12 weeks reduced diabetic foot ulcer depth by 0.8 ± 0.8 cm versus 0.3 ± 0.5 cm in placebo (p=0.003, n=70)
- Combined with vitex agnus castus, magnesium significantly enhanced serum osteocalcin levels (bone formation marker) in women with long bone fractures (n=64, RCT)
Dosing: 200-400 mg elemental magnesium once daily (oral)
Cost: $12-$45/month
Best For: Bone fracture healing, muscle recovery, reducing post-injury inflammation
Magnesium's anti-inflammatory properties and role in bone mineralization make it especially valuable for fracture recovery. The evidence particularly supports its use alongside calcium and vitamin D in a comprehensive bone-healing protocol.
What it is: An amino acid precursor to glutathione, the body's master antioxidant, supporting tissue repair and oxidative stress reduction.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Amputation stump healing in high-risk patients: 100% healing with IV NAC versus 46% with placebo (n=20, p<0.01, RCT)
- Facial nerve crush injury in rats: NAC treatment showed greater recovery at 2 weeks (p=0.006) and 4 weeks (p=0.001) with higher functional scores throughout
Dosing: 600-1800 mg once to twice daily (oral)
Cost: $8-$30/month
Best For: Wound healing, severe tissue injuries, post-surgical recovery, reducing oxidative stress
NAC shows particularly strong evidence for challenging wound healing scenarios and tissue regeneration. Its antioxidant mechanisms suggest broad applicability across injury recovery contexts.
What it is: The active polyphenol compound in turmeric, known for potent anti-inflammatory and antioxidant properties.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Meta-analysis: Curcumin reduced serum creatine kinase by 48.54 IU/L (p=0.003) and muscle soreness index by 0.476 (p=0.001)
- RCT (n=17): Curcumin 2.5g twice daily reduced pain during single-leg squat at 24-48 hours post-eccentric exercise by 1.4-1.7 cm on visual analog scale with moderate-large effect size
Dosing: 500-1000 mg twice daily (oral)
Cost: $10-$55/month
Best For: Muscle damage recovery, reducing delayed-onset muscle soreness (DOMS), exercise-induced inflammation
Curcumin's ability to reduce muscle damage biomarkers and soreness makes it valuable for athletes recovering from intense training or muscle strain injuries. Effects appear more pronounced when dosing begins before injury/exercise.
What it is: Hydrolyzed collagen protein containing amino acids (glycine, proline, hydroxyproline) that form the structural basis of connective tissues.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Muscle soreness reduced with large effect size (2.64) at 48 hours post-150 drop jumps; countermovement jump recovery improved from 78.67% to 89.96% of baseline (n=24, p=0.050)
- Trabecular bone mineral content increased 5.24% with collagen + calcium/vitamin D versus calcium/vitamin D alone in postmenopausal women (n=51, p<0.01)
Dosing: 10-20g once daily (oral)
Cost: $20-$60/month
Best For: Joint and connective tissue recovery, bone density support, muscle soreness reduction, tendon and ligament injuries
Collagen peptides provide direct substrate for tissue repair while supporting musculoskeletal recovery across multiple structures. The research particularly supports use in chronic musculoskeletal injury rehabilitation.
What it is: An essential micronutrient and cofactor for collagen cross-linking and immune cell function during tissue repair.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Chronic foot ulcer healing: 500 mg vitamin C supplementation achieved 100% healing without amputation versus 44% unhealed in controls at 8 weeks (n=16, p=0.041)
- Scar strength 42% higher at 80 mg/day vitamin C intake versus 10 mg/day intake over mean 11.5 months follow-up (p<0.001)
Dosing: 500-2000 mg once to twice daily (oral)
Cost: $5-$40/month
Best For: Wound healing, scar formation quality, chronic ulcers, post-surgical recovery
Vitamin C's central role in collagen synthesis makes it essential for any injury involving wound healing or tissue formation. Effects appear dose-dependent, with higher intakes supporting better outcomes.
What it is: A naturally occurring compound that supports ATP energy production and muscle protein synthesis.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Tendon overuse injury recovery: Creatine increased ankle plantar flexion peak torque by 10.4% at 4 weeks and 16.8% at 6 weeks post-rehabilitation versus 7.1% and 14% in placebo (n=18, p<0.001)
- ACL reconstruction: No difference in strength or power recovery between creatine and placebo groups from 6-12 weeks post-surgery (n=60, RCT)
Dosing: 3-5g once daily (oral)
Cost: $8-$25/month
Best For: Tendon and muscle strength recovery, rehabilitation following musculoskeletal injury
Creatine shows inconsistent benefits across injury types—strong evidence for tendon injuries but not ACL recovery. Consider it primarily for non-ACL musculoskeletal injuries where strength gains are the primary goal.
What it is: An adaptogenic herb that modulates stress hormones and supports muscle recovery through improved exercise tolerance.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Bench press strength increased 46.0 kg (ashwagandha) versus 26.4 kg (placebo) over 8 weeks in healthy young men (n=57, p=0.001)
- Muscle recovery improved via reduced serum creatine kinase (muscle damage marker) in ashwagandha group versus placebo after resistance training (n=57)
Dosing: 300-600 mg once daily or split into two doses (oral)
Cost: $15-$45/month
Best For: Muscle strength gains during recovery, stress reduction during rehabilitation, muscle damage reduction
Ashwagandha's benefits appear strongest for resistance training recovery and strength gains. The adaptogenic properties may also support psychological resilience during lengthy rehabilitation periods.
What it is: A coenzyme essential for cellular energy production (ATP synthesis) and antioxidant defense within mitochondria.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Wisdom tooth extraction: CoQ10 improved tissue healing 45% by day 7 and 55% by day 14 versus placebo; reduced temporomandibular disorders (12% vs. 30%) and dry socket (6% vs. 18%, n=70)
- Meta-analysis of 17 athlete trials: CoQ10 reduced creatine kinase by 71.81 IU/L (p=0.012) and lactate dehydrogenase by 69.99 IU/L (p=0.033), with dose-dependent effects ≥300 mg/day
Dosing: 100-300 mg once or twice daily (oral)
Cost: $20-$75/month
Best For: Exercise-induced muscle damage, post-surgical wound healing, reducing biomarkers of muscle breakdown
CoQ10's mitochondrial function support makes it valuable for both energy production during rehabilitation and reducing exercise-induced muscle damage. Higher doses (≥300 mg) show more consistent benefits.
What it is: Live beneficial bacteria that support gut barrier function, immune regulation, and systemic inflammation control.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Meta-analysis of 19 RCTs (n=1,384): Probiotics reduced wound infection risk by 48% (RR=0.52, 95% CI 0.38-0.71) in critically ill patients, most pronounced in burn patients
- Diabetic foot ulcer RCT (n=60): Probiotics reduced ulcer length by 1.3 cm versus 0.8 cm placebo (p=0.01), width by 1.1 versus 0.7 cm (p=0.02) over 12 weeks
Dosing: 10-100 billion CFU (colony-forming units) once daily (oral)
Cost: $15-$80/month
Best For: Wound infection prevention, post-surgical recovery, immune support during rehabilitation, chronic wound healing
Probiotics' benefits appear strongest for infection prevention and systemic immune support. The reduction in wound infection risk makes them particularly valuable following surgery or severe traumatic injuries.
What it is: An essential vitamin critical for nerve function, myelin formation, and cellular energy metabolism.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Meta-analysis of 24 studies: Level II evidence for B12 efficacy in post-herpetic neuralgia and level III evidence in painful peripheral neuropathy
- RCT in diabetic peripheral neuropathy (n=32, 16 weeks): Both 1000 μg and 2000 μg oral methylcobalamin daily significantly improved neuropathy symptoms on multiple clinical scales
Dosing: 1000-5000 mcg once daily (sublingual)
Cost: $8-$35/month
Best For: Peripheral nerve injury recovery, neuropathic pain management, nerve regeneration support
Vitamin B12's direct involvement in nerve myelination and function makes it particularly valuable for nerve injury recovery and management of neuropathic pain during rehabilitation.
What it is: A hormone regulating circadian rhythms and providing potent antioxidant and anti-inflammatory effects beyond sleep regulation.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- COPD patients receiving melatonin 3 mg/day showed 71 m greater improvement in 6-minute walk test versus placebo over 12 weeks (p<0.01, n=39)
- Melatonin improved COPD health status by -11±6 points versus -3±5 placebo (p<0.01) and quality of life by -6.9±3.0 versus -1.9±2.4 (p<0.01)
Dosing: 0.5-5 mg once daily (oral)
Cost: $4-$20/month
Best For: Sleep support during recovery, reducing post-injury oxidative stress, pulmonary rehabilitation, circadian rhythm restoration
Melatonin's dual benefits for sleep quality and antioxidant protection make it valuable during injury recovery periods when restorative sleep is critical. Its oxidative stress reduction may accelerate tissue repair.
What it is: Oil from Nigella sativa seeds containing thymoquinone and other compounds with antimicrobial and wound-healing properties.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Episiotomy wound healing (n=74, RCT): Nigella sativa emulgel significantly improved healing with REEDA score reduction of 0.79 points (p=0.001) and VAS pain reduction of 0.74 points (p=0.021) versus placebo
- Animal studies: NSO preserved salivary function and promoted stem cell recovery following radiotherapy with significantly improved saliva production versus untreated controls
Dosing: 1000-3000 mg twice daily (oral)
Cost: $10-$35/month
Best For: Wound healing, reducing post-injury pain, antimicrobial support, episiotomy and perineal recovery
Black seed oil's antimicrobial and wound-healing properties make it particularly valuable for reducing infection risk and promoting healing in specific wound types.
What it is: Garlic aged in ethanol containing S-allylcysteine and other organosulfur compounds supporting vascular function and healing.
Evidence Tier: Tier 3 — Probable benefit
Key Findings:
- Post-occlusive reactive hyperemia increased 21.6% (p<0.05) with 2400 mg AGE daily versus placebo over 12 months in 93 atherosclerosis patients
- Cutaneous vascular conductance with acetylch