Colorado Biolabs ProFerrin Clear Review

This product gives 31.5 milligrams of iron a day, from heme iron polypeptide, which is above the 27 milligrams that worked in studies. Iron reduces tiredness mainly in people who are low in iron. A large review of 18 studies in people without anemia found iron eased fatigue and improved well-being, but the benefit disappeared when people with normal iron levels were included ^[1]. Another review of 18 trials in iron-deficient adults found less self-reported fatigue but no better measured physical fitness ^[2]. In 198 menstruating women with low iron stores and fatigue, 80 milligrams of iron daily for 12 weeks reduced fatigue more than placebo ^[3]. In 290 tired, iron-deficient women, a single iron infusion reduced fatigue in 65.3 percent versus 52.7 percent on placebo after 8 weeks ^[4]. In new mothers with anemia, iron given into a vein eased fatigue more than iron pills ^[5][6]. Much of the strongest evidence comes from infusions or other iron forms rather than this heme form, and benefits are unlikely in people whose iron levels are already normal ^[1]. Animal and cell studies are never counted.

The panel is split on iron, with most of the ten treating it as worth getting enough of but cautioning against taking too much. Several recommend checking levels and replenishing if low, especially for menstruating women, women of reproductive age who are deficient, pregnancy and early childhood, and for brain, thyroid, hair and muscle support. Food sources such as red meat, organ meats and heme iron are preferred by a few, and one warns against iron supplements because of oxidation and copper issues, while another takes 10 milligrams of heme iron after years of low levels, and one began a supplement and felt less sore in training. Several warn that excess iron can drive inflammation, oxidative stress and aging, and that it should not be taken aggressively without testing, and one noted that tea blocks absorption. One panelist stopped after trying every form for years without raising his levels, though he later got them back to healthy levels, and no other ingredients were discussed.

Combine with: For iron-related energy support, pair iron with vitamin C to improve absorption, and with vitamin B12 and folate, which are needed for healthy red blood cell formation. Vitamin B6 and copper also support iron metabolism. If the user still wants adrenal support, take a separate adrenal product with adaptogens such as ashwagandha or rhodiola, plus vitamin C, pantothenic acid (B5) and magnesium, spaced a few hours from iron. Avoid taking iron with calcium, coffee, tea, or antacids because they reduce absorption. Check ferritin and iron levels with a clinician before long-term use, since excess iron can be harmful.