Question about Antihistamines and vitamin C and Cervical Secretions

For those of us who are allergy sufferes (aaachoo!), there is some evidence that antihistamines (which notoriously can "dry" out many of your secretions) can have a small, minor effect (Sudafed having a worse effect). What can be considered would be to use Robitussin to try and counteract these effects if you have bad allergies during season . Try this first, but if a signficant drop has been noticed (not likely), then consideration can be given to stop the antihistamines 4 days prior to when the ewcm is expected (2-3days prior to ovulation) and restart after ovulation. Vitamin C should have no effect on cervical mucus.

Thank you Dr. Q!