How many mg of BCAAs does Animal Nitro contain? Rudy Checo December 29, 2021 16:00 Updated BCAAs Each pack of Animal Nitro contains 4065 mg of BCAAs. If you have further questions please reach out to our support staff at firstname.lastname@example.org or send a contact request here. Related articles I'm dieting, can Animal Nitro help? Comments 0 comments Please sign in to leave a comment.