What over the counter medications should not be taken with propranolol?

Propranolol should not be taken with over-the-counter medications that contain stimulants, such as certain cold and allergy medications (e.g., pseudoephedrine) or weight loss products, as they can counteract the effects of propranolol and increase blood pressure. Additionally, non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen may reduce the effectiveness of propranolol. Always consult with a healthcare professional before combining medications.