Botanical

Aloe Vera

Aloe barbadensis Miller

Evidence TierCWADA NOT PROHIBITED

tuneTypical Dose

1-3 gel applications/day

watchEffect Window

Days to weeks for topical outcomes

check_circleCompliance

WADA NOT PROHIBITED

Overview

Clinical Summary

Aloe vera is best supported as a topical burn and irritation aid. Oral use is much less reliable and carries laxative and electrolyte risks depending on the preparation.

Evidence supports symptom relief in functional dyspepsia, cramping, or nausea for some carminative and demulcent herbs. Effects may involve smooth muscle relaxation, bile flow stimulation, or mucosal soothing. Minority studies examine antimicrobial actions and reduced reflux symptoms, with variable quality. Tolerance is dose dependent, and concentrated oils can irritate sensitive GI tracts.

Gel products support skin barrier and hydration mechanisms. Oral preparations vary and can exert laxative effects from anthraquinones.

Outcomes

What This Is Expected To Influence

Primary Outcomes

  • Topical reduction in minor skin irritation
  • Possible mild GI effects from oral products

Secondary Outcomes

  • Potential topical barrier comfort
  • Risk of GI intolerance orally

Safety

Contraindications and Interactions

Contraindications

  • Pregnancy/lactation (oral)
  • Chronic bowel sensitivity
  • Electrolyte disorders

Side effects

  • Local irritation
  • Diarrhea
  • Abdominal cramps

Interactions

  • Cardiac glycosides (chronic oral use)
  • Other laxative botanicals
  • Electrolyte-altering meds

Avoid if

  • Kidney disease with electrolyte risk
  • Pregnant/breastfeeding (oral)
  • Severe IBD without medical supervision

Evidence

Study-level References

aloe-vera-SRC-001Randomized/controlled topical clinical studies and meta-analyses.

Topical aloe trial syntheses and systematic comparisons across minor dermatologic irritation settings.

Population: Patients with minor burns, irritation, or localized skin injury.

Dose protocol: Standardized gel preparations with repeated topical application.

Key findings: Consistent symptom improvement in selected cohorts.

Notes: Variability in product standardization across jurisdictions.

Paper content

Consistent symptom improvement in selected cohorts.

aloe-vera-SRC-002Controlled and observational safety-focused studies.

Oral aloe safety literature, including chronic use and case reporting.

Population: Adults using oral preparations.

Dose protocol: Variable raw latex and extract products.

Key findings: Mixed efficacy and meaningful GI adverse-event signal.

Notes: Heterogeneity in dose and preparation chemistry.

Paper content

Mixed efficacy and meaningful GI adverse-event signal.

aloe-vera-SRC-003Review/meta-review.

Systematic reviews of aloe topical and oral preparation comparisons.

Population: Combined dermatologic and GI populations.

Dose protocol: Mixed extracts and gels.

Key findings: Modest-to-moderate topical support. Weak or no consistent oral nootropic effect.

Notes: Poor distinction between whole-leaf and decolorized products in many studies.

Paper content

Modest-to-moderate topical support; weak/no consistent oral nootropic effect.

aloe-vera-SRC-004Systematic review and meta-analysis of randomized controlled trials.
Sourceopen_in_new

Huang YN, Chen KC, Wang JH, Lin YK. Effects of Aloe vera on Burn Injuries: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Burn Care Res. 2024;45(6):1536-1545. doi:10.1093/jbcr/irae061. PMID:38605441.

Population: Patients with second-degree burn injuries across 9 RCTs.

Dose protocol: Topical aloe vera preparations for second-degree burns across 9 RCTs.

Key findings: Aloe vera reduced mean wound-healing time by approximately 3.76 days compared to other topicals without increasing infection risk. No significant advantage for pain reduction.

Notes: Most current meta-analysis of aloe vera for burns (2024). Confirms accelerated healing without increased infection but uncertain analgesic effects.

Paper content

This 2024 systematic review and meta-analysis of 9 RCTs evaluated aloe vera for burn wound care. The primary finding was that aloe vera significantly reduced mean wound-healing time by approximately 3.76 days compared to other topical agents in patients with second-degree burns. However, aloe vera did not show significant advantages for pain reduction or infection rates. The results support the traditional use of aloe vera for accelerating burn wound closure without increasing infection risk.

aloe-vera-SRC-005Systematic review and meta-analysis of randomized controlled trials.
Sourceopen_in_new

Xie C, Jing Z, Xue M. Clinical Effect of Local Aloe Vera Use as an Adjunct to Periodontal Therapy: A Systematic Review and Meta-Analysis. J Evid Based Dent Pract. 2025;25(4):102167. doi:10.1016/j.jebdp.2025.102167. PMID:41290277.

Population: Patients receiving scaling and root planing for periodontal disease across included RCTs.

Dose protocol: Subgingival aloe vera gel as adjunct to scaling and root planing in periodontal disease.

Key findings: Probing pocket depth reduced by 0.47 mm at 3 months and 1.06 mm at 12 months. Clinical attachment level improved at 6 and 12 months.

Notes: Limited number of included studies reduces reliability. Direction of effect is consistent with anti-inflammatory and mucosal healing properties.

Paper content

This 2025 systematic review and meta-analysis examined aloe vera as an adjunct to scaling and root planing for periodontal disease. Across multiple RCTs, adjunctive aloe vera reduced probing pocket depth at 3, 6, and 12 months compared to scaling and root planing alone. The largest effect was at 12 months (-1.06 mm). Clinical attachment level also improved at 6 and 12 months. The authors noted the evidence quality was limited by the small number of included studies.

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