1. haidut

    Optimal vitamin D intake may be at least 2,000 IU daily

    As most people supplementing with vitamins know, the daily RDA for vitamin D has been set at 400 IU (in some countries up to 800 IU) daily, despite no evidence that such doses do anything beneficial, including even the basic target - preventing rickets. More recent studies have argues that the...
  2. A

    Subclinical hypothyroidism dosage

    My TSH is elevated (from 4.4-6.6, reference: 0.4-4), while free T4 and T3 is normal. What dosage of T4 should I use? And should I include T3?
  3. Tristan Loscha

    Caffeine Decreases Vitamin D Receptor Protein Expression In Vitro

    J Steroid Biochem Mol Biol. 2007 Mar;103(3-5):368-71. Epub 2007 Jan 12. Caffeine decreases vitamin D receptor protein expression and 1,25(OH)2D3 stimulated alkaline phosphatase activity in human osteoblast cells. Rapuri PB1, Gallagher JC, Nawaz Z. Author information Abstract Of the various risk...
  4. Tristan Loscha


    Related to the nCoV situation: D:How much is enough,how much is too much?
  5. L

    Ray Peat’s Methylene Blue Experience, And Optimal Dose Of Methylene Blue According To Ray Peat

    In John Barkhausen’s “Politics and Science podcast”, the topic was evolution. The recording is dated 2015.03.04. At around 1:18:00, someone asks Ray about his methylene blue experience. He says he takes Methylene Blue transdermally. He also says that “quite a few people are having very powerful...
  6. DaveFoster

    Calcium, Magnesium, Copper, and Zinc Types and Dosages

    There's a great deal of information on this site that concerns minerals, but a wide variety of different dosages for each substance. Haidut provides a lot of helpful studies that translates to calculable dosages, but there' still a lot of ambiguity. Dosages for the following: - Calcium (35...
  7. mayweatherking

    Dosing Instructions For Methylene Blue

    where are they? i see people on amazon posting random things like take vitamin C with it and put it into like two drops per 1 gallon of water or something. are there side effects like turning your skin blue or something?
  8. haidut

    Optimal Dose Of Caffeine In Humans

    Many people on the forum and elsewhere take caffeine for its pro-metabolic and disease-preventing effects. However, caffeine can induce a stress response. This is especially true in people with poor glycogen stores, liver problems, and hypothyroidism in general. This study says that a human dose...
  9. haidut

    Why DHEA Must Be Taken In Small Doses Only

    Once again, I am amazed at how well Ray's recommendations are backed by science. He has said that taking DHEA is fine and can restore proper youthful hormone balance. However, he cautioned that DHEA should only be taken in doses of no more than 10mg at once and preferably no more than 15mg...
  10. R

    Progest-E: Dosage, Drop Size

    Is there a chart somewhere or has anyone measured out Progest-e in terms of teaspoons? If I needed 100 mg of progesterone (33 drops), how much of a teaspoon would that be? How many drops or how much progesterone would be in 1/4 teaspoon?
  11. Bluebell

    Dosages Of Thiamine, Riboflavin, Niacinamide, Pyridoxine, And Biotin

    I was wondering what might be good dosages of thiamine, riboflavin, niacinamide, pyridoxine, and biotin. I currently take the following and was wondering if the doses are OK: (I recently stopped for a few days then restarted as I find I feel better when I take them) thiamine 100mg riboflavin...
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