Vitamin B1 (Thiamine)   Uses of this Supplement Alcoholism   Supplements with Similar Uses View List by Use   Drugs that Interact Summary Nortriptyline Scopolamine Scopolamine-containing Medications Tetracycline Tetracycline-containing Medications Tricyclic Antidepressants (TCAs)   Drugs that Deplete this Substance View List   Supplements with Similar Side Effects View List by Side Effect   Learn More About Nutrition	Look Up > Supplements > Vitamin B1 (Thiamine) > SideEffects Supplements with Similar Side Effects as Vitamin B1 (Thiamine) Below is a list of side effects for this supplement along with supplements with similar side effects.   allergy Psyllium Sulfur Vitamin B9 (Folic Acid) gastrointestinal discomfort 5-Hydroxytryptophan (5-HTP) Copper Creatine Iron Lactobacillus Acidophilus Sulfur Tyrosine Vanadium Vitamin B9 (Folic Acid) Zinc