Niacinamide For Dogs. A combination of niacinamide and tetracycline was used to treat 31 dogs with various autoimmune skin diseases (discoid lupus erythematosus, pemphigus foliaceus, pemphigus erythematosus, and bullous pemphigoid). 500mg each tetracycline and niacinamide every 8 hours note:
When combined with tetracycline, niacinamide (at a dosage of 500 mg of tetracycline and 500 mg of nacinamide per dog given every eight hours for dogs weighing more than 10 kg) has been found to show an. Dogs >10kg bw 500mg of each tid. Food can significantly reduce (up to 50% or more) the amount of tetracycline or oxytetracycline absorbed.