No supplement contains real estrogen. We compared 16 products and ranked 6 plant-based options (ERr 731, soy isoflavones, S-equol, black cohosh, hops) by evidence, dose and safety.
We compared cod liver oil softgels by EPA and DHA, vitamin A against the upper limit, vitamin D, testing and cost. See the 7 best picks and how many softgels are safe.
We compared 24 beta-alanine powders, capsules and tablets by dose, form, testing and cost per 3.2 g. See our 5 picks, including an NSF Certified for Sport option.
We compared 20 psyllium husk powders and capsules by fiber per serving, purity, lead warnings and cost per gram. See our 7 picks for regularity and cholesterol.
We compared 17 probiotic labels by strain, CFU guarantee, other ingredients and value. Our 7 picks for men over 50 cover antibiotics, regularity and daily gut support.
We compared 18 liquid iodine drops by iodine per drop, form, upper limit and testing. Our 7 picks give a measured potassium iodide dose, not megadoses.
We compared 16 beef organ supplements by organs, amount per organ, sourcing and fillers. Our 7 picks include the best overall, value and men’s options.
We compared 17 melatonin-free sleep supplements by dose, form and evidence. Our 7 picks cover ashwagandha, L-theanine, magnesium, glycine and herbs.
Discover the top 4 best PQQ and CoQ10 supplements for cellular energy, mitochondrial health, heart support, brain function, and healthy aging.
Discover the best 8 Ubiquinol supplements for heart health, cellular energy, and statin support. Compare dosage, absorption, and price per serving.
We compared 14 CoQ10 labels by form, real dose, carrier oil and testing. See the best USP- and NSF-certified, vegan, budget and ubiquinol picks.
We compared 16 glutathione labels by form, dose and testing. See the best Setria, NSF-certified, liposomal and S-acetyl picks, plus how long it takes to work.
We compared 17 spirulina labels by form, serving size, sourcing and testing. See the best organic powders and tablets, plus who should avoid spirulina.
We compared 16 ashwagandha labels by extract, trial dose and testing. See the best KSM-66, Shoden and whole-root picks, plus liver and thyroid safety.
We compared 18 magnesium labels by form, elemental dose and testing. See the best glycinate, citrate, L-threonate, taurate and malate picks, plus safe limits.
Discover top foods and supplements for liver detox, including milk thistle. Learn how to enhance liver health naturally through diet and lifestyle.
What are the healthiest foods to feed kids? Here are the top 20 immune-boosting foods for your child’s immune system to help fight off infections.
Discover the top 10 nutrients that can optimize genetic expression, supporting DNA repair, immune function, and overall well-being. Learn how vitamins, minerals, and antioxidants influence gene activity and contribute to better health outcomes.
Find out if ashwagandha is safe for daily use, its benefits for men and women, and how it affects liver and kidney health. Learn more here.
We compared 13 L-theanine supplements on dose, form and purity. See the 6 best picks for stress, sleep and focus, how much to take and what the research shows.