Soy isoflavone extracts and supplements are available as dietary supplements without a prescription in the US. These products are not standardized, and the amounts of soy isoflavones they provide may vary considerably.
This can sometimes be caused by allergies, infections, and even tumors, but it is often simply something that some people have due to their anatomy (ie, they were born with a pre-disposition to this problem). Sometimes, this clogged feeling in the ear can be a trigger for headaches. As you know, headaches can come on from almost any cause, and some people will have different things that are triggers for these headaches to start. Continued ear pain, hearing loss, and dizziness would all be potentially worrisome symptoms.
You have ear pain. Your outer ear canal is red and swollen. You have clear fluid or pus leaking out of your ear. Your outer ear canal is itchy and you see a rash. You have trouble hearing because your ear is plugged. You feel a bump in your ear canal, called a polyp. Flakes of skin fall from your ear.