The Probiotic you're using is fine; they are all pretty standard, there are a few different strains of "healthy" bacteria that are usually present in a Probiotic supplement, and this one has them, so you're good to just sprinkle it on his food once daily in the 2 gram amount...
I know what you're saying...No one that takes their beloved bird, reptile, rodent, etc. to an "Exotic's Vet" is thinking that they cannot trust the Vet, after all they went to Veterinary Medical School, and so unless they themselves have a medical education or Avian medicine background, they simply go with what the Exotic's Vet tells them...why wouldn't they...
The problem with most countries, in-fact I'm learning it's all countries when I thought it was only the United States originally, is that the term "Exotic Vet" means nothing at all. Literally it means nothing. In the United States, anyone who graduates from an accredited Veterinary Medical School and then passes their state licensing exams can immediately call themselves an "Exotic's Vet" instead of a "General Vet"...So what's the difference?
In the US and most other countries I'm learning, a "General Vet" is typically a Vet who has graduated from Vet School and passed their licensing tests for their state, and who ONLY treats dogs and cats; In 99% of accredited Veterinary Medical Schools, including all the big ones in the US like The University of Pennsylvania Veterinary Medical School, their 4-year curriculum consists of simply touching on the very basic anatomy and physiology of birds, reptiles/amphibians, rodents, marsupials, and then the primates, while the bulk of their 4-year education, training, and hands-on experience/internships is completely focuses on diagnosing, treating, and doing simple surgical procedures on dogs and cats. They get NONE of this type of education, training,
or hands-on experience regarding any other species of living creatures, such as birds,
reptiles, rodents, etc.
So, as such, the difference between a "General" Veterinarian who has JUST GRADUATED from Vet School and passed their licensing exams for their state and an "Exotics" Vet who has JUST GRADUATED from Vet School and passed their licensing exams for their state is that someone who chooses to call themselves an "Exotic's Vet" is simply willing to treat animals other than dogs and cats. That's it. That's the difference...It's a fact that most-all Exotic's Vets in the US and other countries have not one bit of extra education, training, or hands-on experience in treating any other animals other than dogs and cats, not even an internship with a Certified Vet in another animal medicine specialty. They can legally call themselves an "Exotics" Vet just so they can see more types of pets and make more money.
***There are RARE exceptions to this, but they are few and far between...Take Dr. Kelleher, who owns and runs "Broward Avian and Exotic" in the Fort Lauderdale, Florida area (Deer Park Beach area to be exact), and who has been featured on the Discovery channels/National Geographic Channel's show "Dr. K's Emergency Animal ER" for the last 6 years...Dr. Kelleher is an "Exotics" Vet who went back to school after opening her Exotic Animal practice years ago, did a full-internship with one of the best CAV's in the US, and then got both of the major Certifications in Avian Medicine available in the US...So she is an Exotics Vet who did it the right way, she decided that she wanted to treat all types of animals, but she wanted to specialize in treating and operating on Birds, so she went back and did it the right way. Dr. Kelleher also employs other Veterinarians at "Broward Avian and Exotic" who are certified specialists in other species; for example, her now-partner specializes in Reptiles and Rodents, specifically Rabbits...And Dr. Kelleher is now one of the most highly-regarded and respected CAV's in the United States, and is The Avian Vet in the country who other CAV's recommend all across the US send their Avian surgeries to...She has literally developed the extended surgical procedure for rebuilding the legs of birds who are born with certain deformities that make it impossible for them to ever stand, perch, walk, etc. Dr. Kelleher has performed this surgery numerous times on several larger species of parrots, including multiple baby Macaws and Cockatoos, while they are only 5-6 weeks old, and she literally takes their legs apart, completely apart, disconnecting the ligaments and tendons holding the bones together, so that they are only connected with very thin strips of skin, and then she measures and cuts-off certain amounts of the bones, shortening them and then reconnecting them back together using rods, plates, screws, and pins, basically cutting-out the deformed bones or the bones that are not growing/developing in the correct directions/positions, and literally "recreating" their legs....Dr. Kelleher ALSO, as if building baby bird's legs that work wasn't enough, developed and is still improving something that she calls "Bone Beads", which are tiny,
round "beads" made from natural, once-living avian bone, that is fortified with several broad-spectrum antibiotics and anti-fungals. These "Bone Beads" are used in all types of surgeries, to fill-in gaps/spaces in a bird's body where something must be surgically removed or repaired in such a way that there is a gap/hole/depression left behind that normally can fill-up with fluid and develop severe after-surgery infections. The "Bone-Beads are placed in the gaps/holes/depressions, filling them up, and because they are made from real avian bone, their bodies do not reject them. Instead, the "Bone Beads" are naturally "absorbed" by the bird's body, and eventually harden and become a part of the surrounding living bone, and all the time they are keeping ANY and ALL Bacterial and/or Fungal Infections from developing. The "Bone-Beads" are one of the most fascinating developments in Avian Medicine ever...I watched one episode of the show where another Avian Surgeon had removed a painful, non-visual eyeball from an Amazon Parrot, which was the right thing to do for sure, but the remaining eye-socket kept filling-up with fluid that contained nothing but white blood cells and bacteria, and the poor Amazon kept getting seriously ill from the infections, almost dying from one that caused him to become septic. So after recovering from the Sepsis, this other Avian Surgeon sent the owner's of this Amazon to Dr. Kelleher. She did a CT-Scan on the Amazon immediately to rule-out any foreign body being left behind in the eye-socket that might have been causing the constant infections, and once she ruled that out she took the Amazon into a quick, 20-minute surgery where she cut-open the skin that had grown over the eye-socket, drained all of the fluid from the eye-socket and cleaned it out completely using liquid antibiotics to clean it out, and then she brought out the "Bone-Beads", lol, and using tweezers she filled the eye-socket with the Beads, then did an amazing job stretching the remaining skin back overtop of the socket and sutured it shut again...6-months later, with not one infection following the surgery, the follow-up x-ray showed nothing but a solid eye-socket filled with bone. It was absolutely amazing...And they are now working on developing "Bone-Beads" for all other types of animals, and already have them developed for Reptiles and have been using them successfully for years now.
So the point is that if a Veterinarian wants to "specialize" in treating a certain type of animal, especially species who are soooooo different in every single way from dogs and cats in their anatomy, physiology, pharmacology, etc., specifically Birds or Reptiles/Amphibians, then they need to do the exact same thing that Human Medical Doctors have to do, are required to do, and cannot practice at all without doing it, and that is going through the extra years of education, training, and hands-on experience in that specialty and ONLY that specialty!!!!
Can you imagine a human medical doctor, who did their 4-years of undergraduate college and got their BS in pre-med/biochem, and then went to Medical School and did their 4-years of that, the first 2 being classroom/cadaver lab work and the last 2 being hands-on experience and shadowing with General Practitioners/Internists, then graduating from Medical School, passing the Medical Board Tests for their state, then doing their 1-year internship where they literally go to a new specialty every 6-weeks,
and then having them doing open-heart surgery during their first year of Residency?
Or having them perform an ACL-repair or a Fractured Femur Repair, or having them perform Spinal Surgery, etc. after that amount of education/training in the specialties????? (that's how they do it, they spend every 6-weeks of their internship year in a different specialty, that's ALL the training and hands-on experience a human doctor gets in ALL of the most-common specialties, which include Emergency Medicine for 6 weeks, then Psychiatry for 6-weeks, then Orthopedics for 6-weeks, then General Surgery for 6-weeks, then Ear, Nose, Throat for 6-weeks, then Cardiovascular Surgery for 6-weeks, then Endocrinology for 6 weeks, then Urology for 6 weeks...That's basically their internship year)...So if it's not good enough for medical doctors who treat human beings, then why is it good enough for Veterinarians who treat animals that are a part of my family?
I wanna tell you that at times I read your posts twice or thrice just to fix it there in brain for always. I will be in college soon, and will be studying law- I wish to get expertise in animal laws. My group is also working with SPCA and other major Animal Welfare organizations in India to promote, draft and try to convince Parliament to amend PCA 1960 (Prevention of cruelty to Animals Act 1960). The thing is that people really don't care about an animal's life in India, except for some really amazing people in big 4 cities (Mumbai, Chennai, Bengaluru, Kochhi) Unfortunately national capital Delhi is not so serious about veterinary sciences. Most people in breeding and Pet industry belong to poorest and illiterate section of the society. People bring home pets with underlying diseases and then all these pets go through is suffering ..throughout their life. Round cages, improper diets, human junks to pets-that's all very common here. However things are changing with the time, big birds and expensive pets have always received better than others veterinary care. Small birds and inexpensive pets lack such resources. People don't tame budgies here, they just "keep" them as if a piece of decoration. It's REALLY CRUEL. Have you even been to India? If you ever visit my country, I'll suggest you to visit rural areas here for once. Budgies are mostly kept birds, unfortunately they do survive even the neglect. We do have some international standard resources for dogs and cats though. Anyways, government isn't serious either. Can you believe it that in world's biggest democracy.Maximum fine for first offence of animal cruelty is less than 1$ . India is more serious about endangered species. I'm a teen, and I know very little about avian medicines, more about animal laws. I don't know if ACV is good for birds, but I read a little on internet so bought it. Wanted to ask you. What's the best way to use it? What are the situations it is useful in? I'll keep learning about avian medicines, at least the primary and basic care. I wanna be a good owner. My tiel is my darling. And I hope to do a lot good for these little lives in my life 
