Information on Ronaxan Dog Medication

lead dogs image by John Sfondilias from

Ronaxan contains either 20 mg or 100 mg doxycycline as its active ingredient. Used to treat respiratory infections, bronchopneumonia, rhinitis and tonsillitis in dogs, the medication comes as round, yellow tablets. The drug works to kill bacteria Bordetella bronchiseptica, Streptococcus spp.

, Staphylococcus aureus, Pasteurella spp. and other Staphylococcus spp. Cats also benefit from Ronaxan administration for the treatment of feline respiratory infections.


Administration of Ronaxan should always be done orally. The drug is normally administered at a ratio of 10 mg per 0.907kg. of body weight. The dog will suffer less gastrointestinal upset if the drug is administered at feeding time. Most veterinarians prescribe Ronaxan for up to five days.

Possible Side Effects

Administration of Ronaxan in young dogs with developing teeth may cause tooth discolouration. Vomiting and ulcers within the oesophagus and other areas of the gastrointestinal tract have been reported on rare occasions. The drug tends to make dogs hypersensitive to sunlight after administration, so care must be taken when letting the animal outside for extended time periods or a skin reaction can occur. Many dogs suffer loose stools when the drug is administered.

Human Cautions

Human owners who are sensitive to tetracycline-based drugs should wear gloves when administering Ronaxan to dogs. Even individuals who do not exhibit sensitivity should always take care when handling the drug and thoroughly wash their hands after administration. Always keep all medications out of the reach of children or other pets so accidental ingestion does not occur.


Female dogs who may be pregnant or nursing should not be administered Ronaxen. The drug should also never be administered with other drugs unless the veterinarian advises that the combination will be safe for the dog. Antacids and iron supplements should also be avoided when administering any doxycycline-based drug. Antacids often contain calcium, which renders the body unable to absorb the antacid.

Special Uses

Ronaxen has been known to work well when prescribed for tick-borne diseases such as Lyme disease, ehrlichiosis and Rocky Mountain spotted fever. The drug also works well at treating the waterborne disease leptospirosis.