What is the best thing to give my Samoyed to make his coat thick

I took my Samoyed to the vet and they gave him too much grooming. Cut his undercoat. I want his coat to come back thick. What is the best thing to give him. Someone said fish oil, but this seems to make his tummy growl. Someone else said yeast tablets. Any advice you can give me would be appreciated.

Yes, I am a former breeder and exhibitor of Samoyeds for the show ring. Samoyeds are beautiful dogs when their coats are properly maintained but very pathetic looking when under the care of half hearter owners who ignore their coat needs.

Samoyeds are double coated dogs that go through annual changes in coat when the spring weather sets in. They were bred for Artic temperatures,;but because they are double coated, they are able to adjust their coat volume to either insulate from the heat or from the cold. They tend to have fuller coats in colder climates but adjust to the climate that they live in very well. Samoyeds in Brazil, for example, will never have the bushy winter coats of the Samoyeds in Michigan, USA.

At this time of the year, they "blow all the undercoat" in order to adapt for a warmer season and to also begin growing new coat for the cold, winter months. The blown coat is actually dead hair that you can actually pull out in little perfect tufts. If the dog is not groomed, the hair eventually starts to fall out in massive quantities. If he is groomed, the groomer uses a grooming rake to pull out the dead hair before bathing, and the shampoo and warm water do the rest.Groomers will use a blue shampoo, known as a whitening shampoo, to thoroughly remove any dirt and maintain a bright white coat. If maintained regularly, the coat continues to brighten more and more . Once shampooed, a Samoyed requires hours of drying followed by further brushing to remove any remaining dead hair.