Efficacy and safety of a colostrum- and Aloe vera-based oral care protocol to prevent and treat severe oral mucositis in patients undergoing hematopoietic stem cell transplantation: a single-arm phase II study

Ann Hematol. 2022 Oct;101(10):2325-2336. doi: 10.1007/s00277-022-04934-4. Epub 2022 Aug 3.


Oral mucositis is one of the worst effects of the conditioning regimens given to patients undergoing hematopoietic stem cell transplantation. It is characterized by dry mouth, erythema, mucosal soreness, ulcers, and pain, and it may impact patient outcomes. Bovine colostrum and Aloe vera contain a wide variety of biologically active compounds that promote mucosal healing. A non-randomized phase II study was designed to assess the safety and efficacy of a combined bovine colostrum and Aloe vera oral care protocol to prevent and to treat severe oral mucositis in transplant patients. Two commercially available products were given to patients in addition to the standard protocol: Remargin Colostrum OS® mouthwash and Remargin Colostrum Gastro-Gel® taken orally. Forty-six (78.0%) patients experienced oral mucositis, 40 (67.8%) developed mild-moderate forms, and 6 (10.2%) severe ones. Comparing the study group's outcomes with those of a homogeneous historical control group, severe oral mucositis decreased significantly (10.2% vs. 28.4%; P < 0.01), as did its duration (0.5 ± 1.9 vs. 1.5 ± 3.0 days; P < 0.01). Febrile neutropenia episodes (69.5% vs. 95.1%; P < 0.01) and duration (4.0 ± 4.7 vs. 6.2 ± 4.5 days; P < 0.01) also decreased. These findings show that the experimental protocol seems effective in preventing severe forms of oral mucositis. However, a randomized controlled trial is necessary to confirm this.

Keywords: Aloe vera; Colostrum; Conditioning regimen; Hematopoietic stem cell transplantation; Oral mucositis; Oral toxicity.

Publication types

  • Clinical Trial, Phase II

MeSH terms

  • Aloe* / adverse effects
  • Animals
  • Cattle
  • Colostrum*
  • Female
  • Hematopoietic Stem Cell Transplantation / adverse effects
  • Humans
  • Pregnancy
  • Stomatitis* / etiology
  • Stomatitis* / prevention & control
  • Transplantation Conditioning / adverse effects