Vitamin B9 (Folic Acid)   Uses of this Supplement Acne Cancer, Colorectal Cancer, Lung Candidiasis Cataracts Constipation Depression Osteoporosis Rheumatoid Arthritis Stroke   Supplements with Similar Uses View List by Use   Drugs that Interact Summary Methotrexate Tetracycline Tetracycline-containing Medications   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 B9 (Folic Acid) > SideEffects Supplements with Similar Side Effects as Vitamin B9 (Folic Acid) Below is a list of side effects for this supplement along with supplements with similar side effects.   allergy Psyllium Sulfur Vitamin B1 (Thiamine) gastrointestinal discomfort 5-Hydroxytryptophan (5-HTP) Copper Creatine Iron Lactobacillus Acidophilus Sulfur Tyrosine Vanadium Vitamin B1 (Thiamine) Zinc