I think things like digestive support tabs are meant to be given about 1 a day. I’ve no idea if they actually work. Daily brushing and making sure bunny has plenty of hay to eat and water to drink is the best thing for combating fur problems.

Do you have baby gas drops (simethicone)? Sometimes 1 ml of simethicone helps a rabbit that has a minor tummy issue, and many do, when they are molting. It’s not absorbed by the body but acts locally in the GI tract and comes out with the poop. Medirabbit says its ok to give on suspicion of gas. There’s no scientific evidence as to its efficacy in gassy buns, but that could be because no study has been made. It’s much used by bun owners.

The Digestive Support pills won’t harm, but there’s no guarantee they’ll help. Dosage is one per day if i remember correctly.

If you havent tried lint- rolling your bunny after brushing I’d recommend that. It gets a good deal of loose fur off and prevents it from flying about in the room and landing in the waterbowl and other unsuitable places. I use a generic brand lint-roller because generic brands tend to have weaker strenght glue than name brands.