Vitamin B9 has low toxicity, is sold without a prescription, and is available at every pharmacy. But this should not mislead you that the drug is allowed to be used uncontrollably.
Possible side effects such as:
• bronchospasm;
• rash, itching, urticaria, skin redness;
• nausea, diarrhea, bloating;
• headache;
• temperature increase.
Contraindications for taking drugs with folates are:
• hypersensitivity;
• pernicious anemia;
• bronchial asthma;
• a history of malignant neoplasms in the next of kin;
• hypovitaminosis B12;
• chronic pyelonephritis.