Pseudoephedrine/Triprolidine is an antihistamine
and decongestant combination. Long-term use can cause RM(rhinitis medicamentosa)i.e rebound nasal congestion. The possible other side effects include palpitations, anxiety, nervousness, weakness, fever , chills,hallucinations,seizures,severe dizziness and drowsiness and easy bruising.
I don’t feel that the symptoms that you have mentioned has any connection with long term use of this drug.They are independent of this drug usage.