VTC NONSTRESS is a scientifically balanced and concentrated multivitamin powder enforced with the broad-spectrum antibiotic Oxytetracycline and anti-pyretic Analgin. Oxytetracycline is active against Actinomyces, Rickettsia and Chlamydia and is therefore recommended for the treatment of Mortellaro, Moraxella bovis conjunctivitis in calves and Pasteurella multocida and Mycoplasma infections in poultry. The antibiotic effect is bacteriostatic. 
Analgin is an analgesic (pain reliever), antispasmodic (spasm reliever) and antipyretic (fever reducer) similar to paracetamol in that it has minimal anti-inflammatory effects and which is most commonly given orally to prevent and treat pain related to surgery or for the treatment of acute pain.
Oxytetracycline belongs to the group of tetracyclines and acts bacteriostatic against many Gram-positive and Gram-negative bacteria like Bordetella, Campylobacter, Chlamydia, E. coli, Haemophilus, Mycoplasma, Pasteurella, Rickettsia, Salmonella, Staphylo-coccus and Streptococcus spp. The action of oxytetracycline is based on inhibition of bacterial synthesis. Oxytetracycline is mainly excreted in urine and for a small part in bile. 
Vitamin C is not an essential nutritional factor in domestic animals, because it is synthesized by all species (except guinea pigs, monkeys). Vitamin C is essential as a co-enzyme in certain oxidative processes, it is necessary for normal folic acid function and it is also essential for normal wound healing and preserving normal capillary function.