• Cyproheptadine is used to treat allergic reactions (specifically hay fever).
   
• Cyproheptadine has shown effectiveness in the treatment of nightmares including nightmares related to post traumatic stress disorder.
   
• Cyproheptadine has been used in the management of moderate to severe cases of serotonin syndrome (a complex of symptoms associated with the use of serotonergic drugs, such as selective serotonin reuptake inhibitors and monoamine oxidase inhibitors, and in the disease carcinoid in which serotonin is overproduced by tumor cells. Cyproheptadine can also be used as a preventive measure against migraine in children and adolescents.
   
• Cyproheptadine can relieve SSRI-induced sexual dysfunction and drug-induced hyperhydrosis (excessive sweating). 
   
• Cyproheptadine is used in the prevention of cyclical vomiting syndrome and to stimulate the appetite.

Helps in :

• Stimulate appetite
• Promotes excelent weight gain and growth
• Enhances the immune system
• Non-habbit forming appetite stimulant

Adverse effects

While not specifically used as a sedative, cyproheptadine causes drowsiness, as is common with first-generation antihistamines.
Research has shown a suppression of growth hormone with doses of 8–12 mg per day taken for 5 days. 

Other common side effects include:

• Dizziness
• Blurred vision
• Constipation
• Dry mouth, throat, or nose
• Excitability
• Nausea
• Nervousness
• Restlessness