A panel reviewed the research on dietary protein for healthy people who exercise. They covered total daily intake, dose per serving, timing, protein sources and protein quality. The panel reports 1.4 to 2.0 g per kg of body weight per day for most exercisers, 2.3 to 3.1 g/kg/day to protect lean mass while eating below energy needs, and servings spread evenly across the day.
The International Society of Sports Nutrition published its first position stand on dietary protein in 2007. This 2017 update restates the Society's position on how much protein per day, how much per serving, when to eat it, and whether high intakes are safe.
This is a position stand, not an experiment. A panel of 21 authors reviewed the published literature, organized by topic: endurance and resistance exercise performance, body composition, protein timing, recommended intakes, protein sources and quality, and safety. The paper was reviewed by the Society's Research Committee and represents its official position. No new data were collected and the search is not described as systematic.
The Society sets out 14 numbered positions. The main ones:
On endurance the paper is more cautious. Added protein does not appear to improve endurance performance over days, weeks, or immediately before and during exercise. In one study cyclists on a higher protein diet took 20% more time to complete a self-paced time trial than those on lower protein and higher carbohydrate. Adding protein to a carbohydrate drink did suppress markers of muscle damage 12 to 24 hours after exercise and reduced soreness. On safety, controlled studies up to a year at 2.5 to 3.3 g/kg/day in healthy resistance-trained people showed no harmful effect on blood lipids or kidney and liver markers.
The competing interests section is directly relevant. Two authors are employees of BioTRUST Nutrition, a supplement company. One is the CEO and co-founder of the ISSN, and the paper states the ISSN is supported in part by grants from raw goods suppliers and branded companies that sell dietary protein supplements. Many authors report research funding from protein supplement companies, seats on supplement advisory boards, paid consultancy, paid media work, or paid expert witness work in supplement litigation. One author, AAF, reports no conflicts. The paper says no funding was provided for the work itself. This is a narrative position stand, so study selection is not reproducible and results are not pooled into effect sizes. The evidence for intakes above 3 g/kg/day is described as preliminary.
This is a professional body's summary written largely by authors with declared financial ties to the supplement industry, and should be weighed accordingly. Its own text is more measured than the numbered positions suggest: it concludes that added protein does not improve endurance performance, and it frames peri-workout timing mainly as an opportunity to raise total daily intake rather than a window that must be hit. It does not address older, ill or clinical populations, and its safety statements are specifically about healthy resistance-trained people. It reports no trial of its own.
That depends on the specific medication and formula. A few, like blood thinners with CurQLife or blood pressure medication with MaxiNOs, are worth a direct conversation with your doctor first. Check each formula's own FAQ section for specifics, or ask your health coach.
No, and we'd rather be upfront about it. Bacopa, the plant in BacoZest, has published human studies, though they used other bacopa extracts. OptiNOs and MaxiNOs each have human studies sponsored by their maker, Laila Nutraceuticals, which haven't been published in a journal. CurQLife's research is still early, from lab and animal studies, and we label it that way.
It depends on what you're building your routine around. BacoZest is built around bacopa, which is studied for memory.* OptiNOs supports strength and muscular endurance alongside resistance training.* MaxiNOs was studied for healthy blood vessel function.* CurQLife's research is still at the lab stage. Your health coach can help you pick a starting point.
All four are built around plant extracts. OptiNOs was reported as well tolerated in its human study, and published bacopa studies reported no serious side effects. CurQLife's safety data so far comes from lab and animal testing. Check with your doctor first if you're pregnant, nursing, on medication, or managing a health condition.
Because the patented ingredients behind our four formulas went through dedicated research, and research costs real money. A generic curcumin or bacopa supplement hasn't been tested in the form you get from us. You're paying for an ingredient with research behind it, not just a label.
Generic ingredients often haven't been studied in the specific form you're buying. Our four core formulas use patented ingredients, and we show you the research behind each one, including where it's still early.
It depends on the formula. In its study, MaxiNOs blood vessel response was higher than placebo 2 to 3 hours after the first dose.* OptiNOs and bacopa were studied over 6 and 12 weeks of daily use, so give them time. CurQLife is meant to be taken daily.
Yes. BacoZest, OptiNOs, MaxiNOs, and CurQLife are built for different goals, and none of them contain stimulants. They haven't been studied together, so ask your health coach how to fit them into your routine.
