NO!
Yes it is.. Because it can poison the fishes.
Water is H20 while hydrogen peroxide is H202. They have different compositons and therefore different properties, similiar to carbon dioxide, CO2, and carbon monoxide, CO.
Generally, cats are only given hydrogen peroxide to induce vomiting if they have eaten something poisonous. If this is the reason you gave it to your cat, you need to take your cat to a veterinarian right away. The hydrogen peroxide may have gotten the cat to vomit and therefore taken care of any immediate danger, but there could still be some poison in the cat's system, or even other damage depending on what it ate. Also, hydrogen peroxide is given to cats in very small amounts. You would need to put it in a lot of water to be safe for your pet. If you accidentally gave your cat too much, this could be just as dangerous as poison. Hydrogen peroxide is highly corrosive, and can cause damage to membranes in an animal's stomach, resulting in internal bleeding. It can also cause blistering, stomach pain, diarrhea, and further vomiting. If this is the case, your cat still needs taken to a veterinarian promptly.To summarize, if your cat is still showing symptoms of any kind after this, it needs to be taken to a veterinarian. This should be done any time a cat ingests something toxic, if that is why you gave it the hydrogen peroxide. If it is not the reason, and your cat is still showing symptoms, it is most likely caused by the hydrogen peroxide itself. Either situation is dangerous for your cat, and it needs immediate care.
If he has already digested the poison and is still alive, rush him to the veterinarian for treatment of symptoms, along with information on the poison. If your puppy has just eaten the poison, mix some hydrogen peroxide antiseptic in an equal amount of water, and gently pour some in the puppies mouth. More than likely, you will have to separate his lips in back, and pour the mixture between his rear teeth. After he has ingested some of the mixture, stand back, because he will hurl after 10 - 20 seconds. Then take him to the vet along with information on the poison.
No hydrogen peroxide can not cure cancer. It would be good if it could. It has been tested in a controlled medical test and did not work. The body does not create the same type of arteries, veins, and capillaries in a cancer that it does everywhere else. That makes it hard to get any type of chemical to a cancer. Cancer cells would need a hydrogen peroxide receptor for the chemical to use to enter the cell. It would be hard for hydrogen peroxide to get to the cancer and hard for it to get inside once it got there. The only chemicals that can work against cancer will be poison chemicals that mimic chemicals the cancer cells need.
While it is best to bring it to a veterinarian to be safe, a home remedy that can be used is to give your dog one teaspoon of 3% hydrogen peroxide for every ten pounds of their body weight. If, for example, you dog weighs 75 pounds, give them 7 1/2 teaspoons of hydrogen peroxide. While this will induce your dog to regurgitate the poison, it is still strongly recommeded that you call your vet first.
NO! Hydrogen peroxide will poison your fish. If you go to a pet store they willl have the proper water treatment for your tank. This neutralises all the things in tapwater that are harmful to fish (such as chloramine, ammonia and heavy metals - it's not just chlorine that is bad for them). If you know exactly what is in your local water supply and have a very good understanding of water chemistry, you can use pure crystals of sodium thiosulfate to dechlorinate the water. This is the chemical mixed in most commercial water treatments to remove the chlorine.
That really depends upon the severity of the wound. If it is healing nicely, you can stop applying hydrogen peroxide. If it is not healing nicely, you should consult a doctor, who may prescribe an antibiotic or other medical remedies (a sufficiently serious wound could even require surgery).
You can drink food grade hydrogen peroxide. NOT the peroxide in the little brown bottle.Food grade hydrogen peroxide is usually sold on concentration of 35% - so you absolutely have to know how to dilute it.
No there isn't. Because you are changing the colour outside you cannot ingest something to change the colour of your hair. A lot of hair dyes contain hydrogen peroxide. It is alkaline and would poison you if you ingested it.
A half capful is probably not enough to worry about, but if I were there I'd call Poison Control immediately just to make sure. I bet the kid didn't like the taste much...
PEROXISOMESSmall lysosome-like membranous sacs containing oxidase enzymes that detoxify alcohol, hydrogen peroxide, and other harmful chemicals.