LOR without letterhead

I'm reaching out for some advice on a letter of recommendation. One of the doctors I was hoping to request a letter from recently left the clinic where I worked with them (not on good terms) While they'd be willing to write a strong letter for me, they wouldn't be able to use the clinic's letterhead. I'm wondering if a letter without the letterhead would still hold weight in my application, or if I should look for another recommender.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pre-Medical (MD) Source Type: forums