you could try rubbing alcohol on the bites, it works.
Bed Bug Bites: Medical Treatment Bed bug medical treatment is provided depending on the severity of bed bug bite reaction. Usually bed bug bites do not require medical treatment. If itching and inflammation persist, antibiotic cream or local antiseptic lotion and Bite Rx can help control and heal bed bug bite symptoms. However, people bitten with bed bugs should exercise caution and monitor bed bug bite locations for possible secondary infection. If an allergic reaction occurs, it is important to seek medical attention as physicians can prescribe oral antihistamines and corticosteroids.
Cover them with clear nail polish, it suffocates the bite.
rubbing alcohol works well to take the itch out
If you want some OTC pharmacological products for the itch, you could get some anti-itch ointments/creams, such as ones with diphenhydramine (aka Benadryl). They sell them over-the-counter at any pharmacy or stores with pharmacy sections, like WalMart.
