Can I order more than my available allowance worth of OTC products in a single order and cover the remaining charges myself? December 05, 2023 21:32 Updated Yes. You can use your credit card to pay the amount above your allowance threshold. Related articles Can I use my allowance for someone else or combine my allowance with someone else’s like a spouse, family member, or friend? How do I check my order status online? How many days does it take to receive an order? Is there a shipping and handling charge? How many OTC orders can I place?