Pharmacist Questions Pharmacist

Are there anticholinergic drug interactions?

If you take anticholinergic drugs (like antihistamines), what happens if you:


a) take choline supplements

b) ingest high amounts of B vitamins (like niacin/B3)

c) smoke/take nicotine supplements

d) take cholinergic medication (like Bethanecol)

Female | 30 years old
Complaint duration: 00/00/25
Medications: Loratadine, Montelukast, Chromolyn Sodium, Famotidin/Pepsid, digestive enzymes, magnesium citrate
Conditions: Mast cell activation syndrome/MCAS, Ehlers Danlos Syndrome, PCOS, Fibromyalgia, Gastroparesis, IBS/IBD, Angioedema, insomnia, Chronic fatigue syndrome, ...

1 Answer

If you take anticholinergic medications while you are on cholinergic medications, they will cancel out. The anticholinergic will work against the cholinergic medication. There are no interactions with the other medications you asked about.