| Benzthiazide Action Pathway |  | Drug Action | Benzthiazide / Potassium cation / Calcium |
| Benzthiazide Predicted Metabolism Pathway |  | Metabolic | Benzthiazide / Mesoheme |
| Bepotastine H1 Antihistamine Smooth Muscle Relaxation Action Pathway |  | Drug Action | Calcium / Magnesium cation / Bepotastine |
| Bepotastine H1-Antihistamine Action |  | Drug Action | Calcium / Bepotastine |
| Bepotastine H1-Antihistamine Blood Vessel Constriction Action Pathway |  | Drug Action | Arginine / Citrulline / Sapropterin / Nitric Oxide / Calcium / Magnesium cation / Mesoheme / Flavin adenine dinucleotide / Flavin mononucleotide / Bepotastine |
| Bepotastine H1-Antihistamine Immune Response Action Pathway |  | Drug Action | Calcium / Bepotastine |
| Berberine Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Berberine |
| Besifloxacin Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Besifloxacin |
| Beta Oxidation of Very Long Chain Fatty Acids |  | Metabolic | ATP / Levocarnitine / Magnesium cation / Lauric acid |
| beta-Alanine Metabolism |  | Metabolic | Pyridoxal phosphate / Histidine / Aspartic acid / Glutamic acid / NADH / Calcium / Zinc / Pantothenic acid / Dihydrouracil / Oxogluric acid / beta-Alanine / Flavin adenine dinucleotide / Flavin mononucleotide / Uracil |
| beta-Aminoisobutyric Aciduria |  | Disease | Pyridoxal phosphate / Histidine / Aspartic acid / Glutamic acid / NADH / Calcium / Zinc / Pantothenic acid / Dihydrouracil / Oxogluric acid / beta-Alanine / Flavin adenine dinucleotide / Flavin mononucleotide / Uracil |
| beta-Ketothiolase Deficiency |  | Disease | Pyridoxal phosphate / Biotin / Succinic acid / Glutamic acid / Pyridoxal / Leucine / NADH / Valine / Isoleucine / ATP / Acetoacetic acid / Oxogluric acid / Flavin adenine dinucleotide / alpha-Ketoisocaproic acid / alpha-Ketoisovalerate / Methylmalonic Acid |
| beta-Ketothiolase Deficiency |  | Disease | Pyridoxal phosphate / Biotin / Succinic acid / Glutamic acid / Pyridoxal / Leucine / NADH / Valine / Isoleucine / ATP / Acetoacetic acid / Oxogluric acid / Flavin adenine dinucleotide / alpha-Ketoisocaproic acid / alpha-Ketoisovalerate / Methylmalonic Acid |
| beta-Mercaptolactate-Cysteine Disulfiduria |  | Disease | Pyridoxal phosphate / Pyruvic acid / Adenosine phosphate / Glutamic acid / Cysteine / NADH / ATP / Iron / Zinc / Oxogluric acid / gamma-Glutamylcysteine / Pyrophosphoric acid |
| beta-Mercaptolactate-Cysteine Disulfiduria |  | Disease | Pyridoxal phosphate / Pyruvic acid / Adenosine phosphate / Glutamic acid / Cysteine / NADH / ATP / Iron / Zinc / Oxogluric acid / gamma-Glutamylcysteine / Pyrophosphoric acid |
| beta-Ureidopropionase Deficiency |  | Disease | L-Glutamine / ATP / Calcium / Magnesium cation / Iron / Zinc / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Thymidine monophosphate / Dihydrouracil / Dihydroorotic Acid / Orotic acid / Cytidine-5'-Triphosphate / Uridine / Orotidylic acid / Ribose-1-Phosphate / beta-Alanine / Flavin adenine dinucleotide / Flavin mononucleotide / Uracil / Uridine-5'-Diphosphate / Thymine / Uridine monophosphate / Deoxyuridine monophosphate / Pyrophosphoric acid / N-Carbamoylaspartic acid / Thymidine |
| beta-Ureidopropionase Deficiency |  | Disease | L-Glutamine / ATP / Calcium / Magnesium cation / Iron / Zinc / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Thymidine monophosphate / Dihydrouracil / Dihydroorotic Acid / Orotic acid / Cytidine-5'-Triphosphate / Uridine / Orotidylic acid / Ribose-1-Phosphate / beta-Alanine / Flavin adenine dinucleotide / Flavin mononucleotide / Uracil / Uridine-5'-Diphosphate / Thymine / Uridine monophosphate / Deoxyuridine monophosphate / Pyrophosphoric acid / N-Carbamoylaspartic acid / Thymidine |
| Betahistine H1-Antihistamine Action |  | Drug Action | Calcium / Betahistine |
| Betaine Drug Metabolism |  | Metabolic | Acetylphosphate / Flavin adenine dinucleotide |
| Betaine Metabolism |  | Metabolic | Tetrahydrofolic acid / Ademetionine / Choline / Methionine / NADH / ATP / Adenosine / Potassium cation / Magnesium cation / Zinc / N,N-dimethylglycine / Flavin adenine dinucleotide / Pyrophosphoric acid / Betaine aldehyde |
| Betamethasone Action Pathway |  | Drug Action | Glutathione / Betamethasone / Dinoprostone / Calcium / Prostaglandin D2 / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Betamethasone phosphate Action Pathway |  | Drug Action | Glutathione / Betamethasone / Dinoprostone / Calcium / Prostaglandin D2 / Mesoheme / Prostaglandin G2 / Arachidonic Acid / Betamethasone phosphate |
| Betamethasone phosphate Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Betamethasone phosphate |
| Betaxolol Action Pathway |  | Drug Action | ATP / Betaxolol / Potassium cation / Calcium |
| Betaxolol B1-Adrenergic Cardiac Muscle Relaxation Action Pathway |  | Drug Action | ATP / Betaxolol / Calcium |