BetterYou D3000 Vitamin D Daily Oral Spray Review

Each spray serving gives 75 micrograms of vitamin D, a full dose compared with the studies, though above the usual daily upper limit, so members can take less. In people with type 2 diabetes, two large pooled analyses found that vitamin D modestly lowered fasting blood sugar, the long-term blood sugar marker and insulin resistance. The benefit was largest in people low in vitamin D and with higher doses over shorter periods ^[1][2]. In adults with prediabetes, three placebo-controlled trials found vitamin D cut the risk of developing diabetes by 15% over about 3 years ^[3]. In pregnant women, 53 trials found about 36% less pregnancy diabetes ^[4]. The evidence is not all positive. A trial of 22,220 older adults taking 2000 units daily for about 5 years found no significant drop in diabetes risk ^[5]. Another pooled analysis of people with prediabetes found no change in fasting blood sugar, although the glucose tolerance test improved ^[6]. Overall, vitamin D seems to help blood sugar modestly, mostly in people who are low in it. Animal and cell studies are never counted.

Vitamin D is the only ingredient here, and the panel leans clearly in favor: all ten spoke about it, and most either take it or recommend it. People take it because food and sun rarely supply enough, especially in fall and winter or with limited sun exposure, and they link it to bone strength, brain and mood, immune function, muscle, and longevity. The form named most often is vitamin D3, and three of them take 5,000 IU in the morning, while one suggests at least 10,000 IU a day and others aim for blood levels, such as 40 to 100 ng/mL depending on who is speaking. Several say to take it with dietary fat for better absorption, and two pair it with vitamin K2 for calcium and bone health. One panelist cautions that supplementing is pointless for most purposes unless you are deficient, and no one said they stopped taking it.