PEP Prescription Copay Assistance Is Available Apply for PEP (Post Exposure Prophylaxis) Drug Assistance Copay Cards using the information and links below. Gilead Advancing Access Copay Program“The Support” ProgramPatient Saving Card Gilead Assistance for TRUVADA Call 1-877-505-6986 Monday – Friday 9:00 am – 6:00 pm EST Merck & Co Assistance for ISENTRESS Call 1-800-850-3530 Monday – Friday 9:00 am – 6:00 pm EST ViiV drug Assistance for TIVICAY Call 1-844-588-3288 Monday – Friday 9:00 am-6:00 pm EST Gilead Online Assistance Merck Online Assistance ViiV Online Assistance COMPASSION. EMPOWERMENT. EXCELLENCE. INTEGRITY. UNITY.