I take vitamin and mineral supplements primarily as insurance against deficiency, and I take various specific herbal supplements. Here's my daily regimen:
multi-B
mixed tocopherol E, 200IU (I am a big believer in antioxidants.)
C, 250 or 500mg (ditto)
saw palmetto (mentioned earlier in this thread)
glucosamine and condroitin (mentioned earlier in this thread)
kelp and spirulina (iodine)
Since I am a near-vegetarian, I occasionally add zinc, iron, and B-12.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069