Related by context. Frequent words. (Click for all words.) 61 Grapefruit juice 59 caffeine 58 relaxant 58 Histamine 57 digestive enzyme 57 depressant 57 suppresses appetite 57 mood enhancer 56 L theanine 56 Vitamin B6 56 Taurine 56 psychoactive effects 55 Nitroglycerin 55 Sleeping pills 55 Topiramate 55 amyl nitrate 55 salicylates 55 hypnotics 55 vasodilator 55 estrogen hormone 54 pomegranate extract 54 neurotransmitter serotonin 54 salicylate 54 tyramine 54 Tryptophan 54 anxiety insomnia 54 Avoid caffeine 54 psychoactive 53 dehydrogenase 53 nasal decongestant 53 Erythromycin 53 Sedatives 53 maltodextrin 53 glycosides 52 artificially sweetened 52 vitamin B1 52 stimulant 52 alkaloids 52 Fructose 52 Endorphins 52 benzoic acid 52 appetite suppressants 52 phytonutrient 52 Caffeine 52 cannabidiol 52 aloe vera gel 52 mood altering 52 Baclofen 52 Methylphenidate 51 Dextromethorphan 51 Chewing tobacco 51 Oestrogen 51 evening primrose oil 51 Hyaluronic acid 51 aids digestion 51 naturally occurring substances 51 histamines 51 Arginine 51 L arginine 51 hormones estrogen 51 hypotensive 51 B Vitamins 51 Soluble fiber 51 stimulants 51 Quercetin 51 tetrahydrocannabinol 51 Bath salts 51 Ephedrine 51 Antihistamines 51 HPA axis 51 catechin 51 acetaminophen Tylenol 51 coumarin 51 Ghrelin 51 caramel coloring 51 depressants 51 gingko biloba 51 Phenobarbital 50 Digoxin 50 Bupropion 50 belladonna 50 Naltrexone 50 vitamin B3 50 citrus flavors 50 tetrahydrocannabinol THC 50 alkaloid 50 Essential oils 50 benzocaine 50 Sinemet 50 Tannins 50 caloric sweeteners 50 nicotinic acid 50 thermogenic 50 Herbal remedies 50 Pomegranate juice 50 Citalopram 50 caffeinated drinks 50 ketone 50 berry flavored 50 adrenergic 50 naturally occurring substance