Class Indications Dosages Route Interactions Contraindications

Interactions: Cycloserine, hydralazine, isoniazid, oral contraceptives, penicillamine: Increased pyridoxine requirements. Adjust dosages as neces-sary. Levodopa: Reversed therapeutic effects. Monitor child closely. Phenobarbital, phenytoin: Possible 50% decrease in serum levels of these anticonvulsants. Use together cautiously

Penicillamine Penicillin G Benzathine Penicillin G Potassium Penicillin G Procaine Penicillin V Potassium Pentamidine Isethionate Phenobarbital Phenylephrine Hydrochloride Phenytion Physostigmine Salicylate Pilocarpine Hydrochloride Piperacillin Sodium Polysaccharide Iron Complex Potassium Iodide Potassium Salts Prazosin Hydrochloride Prednisolone Prednisolone Acetate Prednisone Primaquine Phosphate Primidone Probenecid Procainamide Hydrochloride Promethazine Hydrochloride Propranolol Hydrochloride Propylthiouracil Protamine Sulfate Pseudoephedrine Hydrochloride Pyrantel Pamoate Pyridoxine Hydrochloride Paclitaxel Pamidronate Pancuronium Pantoprazole Paracetamol Pas Pefloxacin Pefloxacin - Ocular Penfluridol Penicillin V Phenoxymethyl Pentaerythritol Tetranitrate Pentazocine Pentoxyfylline Perindopril Permethrin Pethidine Phenacetin Phenazopyridine Phenformin Phenindione Pheniramine Maleate Phenobarbitone Phenophthalein Phenoxybenzamine Phenylbutazone Phenylephrine Phytoestrogens Pilocarpine Pimozide Pindolol Pioglitazone Pipecuronium Pipenzolate Methyl Br - Antispas Piperacillin Piperazine Piracetam Piribedil Piroxicam Pneumococcal vaccine Polidocanol Polymyxin B - Ocular Polymyxin-B Potassium citrate + citric acid Povidone Iodine Povidone Iodine - VU Pralidoxime Pravastatin sodium Praziquantel Prazosin Prazosin - BPH Prednisolone - Topical Prednisolone - resp Primaquine Procainamide Procaine Penicillin Prochlorperazine Procyclidine Progesterone Proguanil Promethazine Propantheline Br Propantheline Br - Antispas Propofol Propranolol Psoralen Pyrazinamide Pyridostigmine Pyrimethamine Pyritinol