HELP WITH ANGINA

Hi, I had posted a msg. about 10 days ago concerning angina, but i haven't received any answers yet, and I am pretty concerned about my friend. Like I had previously stated, he's 48yrs. old, not really overweight, doesn't eat junk food, or to many fatty foods. But latley when he exerts himself, he has a tendency to get chest pains, sometimes pretty bad!!! (with nauseau).
Then it passes in about 10 minutes, but leaves him feeling drained. Other times, it's not so bad. The other day he was mowing my lawn, and he came in rather winded, but no pain. Yet, about 3 weeks ago, he was helping me clean out my garage, in the heat, and he got pretty bad chest pains! He laid down for a few hrs. and slept, and then felt better. They told him this is angina, although his dr. barley gives him the time of day, it's a rush job - so I really don't know if he diagnosed him correctly. Anyway, I was wondering if there is anytthing natural he can take to cure this angina, or at least help the symptoms????? I would really appreciate any help ! thank you . Bibi Tweet