Higher prevalence of recurrent aphthous ulcer in young adults and the severity decreased with increasing age. The etiology of aphthous ulcer remains unclear. Other possible factors include trauma, drug use, deficiency in vitamin B12, folic acid, iron, stress, hormonal changes and metabolic diseases. Many topical agents such as local and systemic an- tibiotics, local antiseptics, topical NSAIDs, and topical corticosteroids are generally prescribed for symptomatic relief. Several approved drug for- mulations such as pills, mouthwash, sprays and paste such as vitamin B12, chlorhexidine mouthwash, steroid lozenges and local anesthetics are primarily suggested for the treatment of aphthous ulcer.

Camel whey protein gel was fabricated to get benefits of its antiinflammatory, immunomodulator, Antibacterial and antioxidant effects.

40 cases of recurrent aphthous ulcer patients as the research object,were randomly divide into the study group and the control group, each with 20 cases of both sexes with age ranging from 18 years to 50 years.

Inclusion criteria consisted of the following: (a) clinical examination and confirmed history of recurrent oral ulcer, (b) recurrence of the oral ulceration, and (c) patients in good condition with no serious systemic disease. Eligible persons were excluded if they were administered antibiotics or glucocorticoids or accepted periodontal or dental treat- ments that interfered with the results of our experimental drugs.

the control group will be subjected to placebo gel consisting of methyl cellulose gel whereas the study group will use camel whey protein dissolved in methyl cellulose gel base. the gel will be applied 1 day after ulcer appearance and will be stopped after ulcer disappearance

Inclusion Criteria:

• clinical examination and confirmed history of recurrent oral ulcer,
• recurrence of the oral ulceration
• patients in good condition with no serious systemic disease.

Exclusion Criteria:

• if they were administered antibiotics or glucocorticoids
• accepted periodontal or dental treat-ments that interfered with the results of our experimental drugs