There could be various causes, but I believe high homocysteine can lead to this over time (high homocysteine can be caused indirectly by mercury). The remedy for this may be (over a period of time)—IF the problem is related to homocysteine—Liquid B-12 Complete. I would try this after the following two because of the other implications of B-12 and mercury.

If the problem is related to circulatory blockage, there may be a shorter-term solution in this natural combination:

Cardio Assurance

If the muscle aches are related to the same mechanisms as fibromyalgia, this herbal supplement may help:

Fibralgia (Fibro-Malic)

Hope this helps.