
Acebutolol (S)

Acetylcarnitine (P)

N-Acetylcysteine (P)

N-Acetylneuraminic acid (P)

Acyclovir (P;U)

Acylcarnitines (P;U)

Allopurinol (P)

Amanitin (P)

Ambroxol (P)

Amiloride (P;U)

Amino acids (P)

Aminobutyric acid (S)

Amitriptylin and its N-oxide (P)

Amobarbital (P)

Amoxicillin (P)

Amphetamine (P)

Amphotericin B (R)

Ampicillin (P)

Anabolic steroids (B)

Antiasthmatic drugs (P;S)

Azelaic Acid (P)

Bacitracin (P)

Bendroflumethiazide (P)

Benzbromarone (P)

Benzodiazepines (various) (P;U)

Benzoic acid (S;P)

Benzyl alcohol (P)

Betahistine and 2-pyridylacetic acid (U;P)

Bezafibrate (P;U)

Budesonide (S;P)

Budipine and metabolites (P)

Busulfan (P)

Butizide (P)

Butorphanol and metabolites (P)

Caffeine (P)

Caffeinemetabolites (AFMU;17U;1X;1U)(U)

Canrenone (P)

Captopril (P)

Carbamazepine and carbamazepine-10;11-epoxide (P; W)

Carnitine (P; U; T)

Carrageen; Carvedilol (P)

Carvone (P; U)

Ceftizoxime (P; T)

Ceftriaxone (P; CSF)

Ceramides (P)

Cetylpyridiniumchloride (Saliva)

Chlormadinone acetate (P)

Chlorphentermine (P)

Chlortetracycline and 4-epi-chlortetracycline (F)

Chlorthalidone (B)

Ciclesonide and metabolite M1 (P; S; T)

Cimetidine (P) ;Cinnarizine (P)

Clarithromycin and 14-OH-clarithromycin (P; T)

Clavulanic acid (P)

Clenbuterol (U)

E- and Z-Clomiphene (P)

Clomipramine (P)

Clonidine (P)

Codeine (P)

Deanol (dimethylaminoethanol) (P; U)

Deoxycholate (R)

Desalkylflurazepam (P)

Desmosin (U)

Desmethylselegeline (P)

Dextromethorphan (P; U)

Dextrorphan and 3-hydroxymorphinan (P; U; CSF)

Diethylaminoethanol (P; U)

Diazepam (P)

Diclofenac (P; T; Syn; D)

Dihydralazine (P)

Dimetindene and metabolites (U)

Diphenhydramine (P)

Dipyridamole (P)

Doxorubicine (P)

Doxycycline (P)

Dronabinole (P)

Duramycin (P; U; T)

Enoxacin (P)

Erythromycin (P)

Escine (P)

Esomeprazole (P)

Estradiol (P)