I have a baby jumbo pekin--her name is Mae. She is three weeks old now. At a week old, she injured her leg and was limping pretty badly. I bought the Durvet High Level B Complex that
@Miss Lydia recommended above. I got mine from the pharmacy section of
Tractor Supply, and also bought a few syringes and needles from the same section so I could draw up the dose (it is an injectable liquid, so the cap is rubber and you must insert a needle to draw it up/extract it). Please read the following thread for more information about niacin and how pekins need more niacin than other ducks (along with dosage info):
https://www.backyardchickens.com/threads/niacin-deficiency-in-waterfowl.1367557/
Also, I would separate him ASAP. Put him in ducky hospital (a large dog crate or a fenced off area in the duck house or coop) to keep him from running around with the flock and/or being trampled. He needs to rest that leg.
This is what I did with Mae. I brewed very strong comfrey tea and gave it to her to drink and to take a bath in. I did this at least twice a day until she got better. I also put comfrey salve on her leg multiple times per day. Not everyone here uses herbal therapies, but I've seen comfrey work miracles (and it did with Mae!).
If you don't have comfrey growing close-by, you can buy it from your local health food store, Mountain Rose Herbs (
https://mountainroseherbs.com/comfrey-leaf), or even
Amazon (
right here). I used a half gallon glass mason jar, filled it 3/4 of the way with dried comfrey leaf and then covered it with freshly boiled water (cool the water a bit if it's cold in your house, so the jar doesn't shatter), filled to the top. Let that sit for a minimum of 30 minutes, but WAY longer is better, like 4+ hours or overnight. Then, I don't even strain it...just gave it to her to drink (and let her eat the steeped herb) frequently throughout the day, and also poured a couple cups at a time into a rubbermaid tote/bin deep enough for her to soak her leg and hip in. It took several days for her to get better, but she is literally healed.
Good luck! I hope he gets better ASAP!
