The Best Protein Powders in 2027: How Much You Need, Whey vs Plant, and 8 Tested Picks

Protein powder is a convenience, not a supplement in the usual sense: it is food, compressed. Whether you need it depends on a number (your daily protein target), and which one you buy depends on two things most labels do not advertise: whether a named third-party program has tested it, and what independent labs found in it. This guide covers how much protein you actually need, whether whey or plant matters (less than either camp claims), what the 2025 lead-testing reports found, and eight powders we would buy in 2027.

We have not tested these in a lab. Picks are based on Consumer Reports’ October 2025 contaminant testing, third-party program listings (NSF Certified for Sport, Informed Sport, Informed Choice, Informed Protein), manufacturer labels, and reviews from Garage Gym Reviews, BarBend and Healthline. Prices are list prices seen in October 2026 and change often. Links to Amazon are affiliate links; Type A Training earns a commission if you buy through them, at no extra cost to you. This is general nutrition information, not medical advice.

The short version

• If you train, aim for about 1.6 grams of protein per kilogram of body weight per day (0.7 g per pound), spread over at least four meals of about 0.4 g/kg (30 g for a 75 kg person). Over 60, do not go below 0.4 g/kg per meal; younger muscle responds to about 0.24.
• Whey and plant protein build the same strength and nearly the same muscle when daily protein is matched. Per gram, whey is more effective, so plant users need a bigger scoop or a blend. Neither is “superior.”
• Timing barely matters. Total daily protein does. The 30-minute post-workout window is not supported by the evidence.
• Lead is the real issue in this category. Consumer Reports found more than two-thirds of 23 powders exceeded its daily lead benchmark in one serving; plant powders averaged about nine times the lead of dairy. Vanilla over chocolate, whey over plant if you use it daily, and buy from brands that publish their heavy-metal results.
• “Third-party tested” means nothing by itself. Look for NSF Certified for Sport, Informed Sport, Informed Choice or Informed Protein on the tub.

How much protein you need

The largest meta-analysis on the question, 49 studies and 1,863 people, found that adding protein during resistance training increased strength gains by 2.49 kg on a one-rep max and fat-free mass by 0.30 kg, with gains leveling off at about 1.62 g per kg of body weight per day (the upper end of the confidence interval was 2.2) (Morton and colleagues, BJSM, 2018). Two things to notice: the supplement effect is real but small, most of the gain is the training, and the effect shrank with age. The International Society of Sports Nutrition puts the range at 1.4 to 2.0 g/kg for people who exercise, with 20 to 40 g per dose, every three to four hours, and 700 to 3,000 mg of leucine per dose (ISSN position stand, 2017). The US RDA of 0.8 g/kg is the floor that prevents deficiency, not a target for anyone lifting.

In practice: a 75 kg (165 lb) person who lifts lands at about 120 g a day, roughly 30 g per meal over four meals, which is the per-meal target of 0.4 g/kg that Schoenfeld and Aragon proposed (JISSN, 2018). The old idea that you can only absorb 20 to 25 g at a sitting applies to fast protein eaten alone, not to meals.

Over 60: the dose per meal goes up

Older muscle is less sensitive to protein. In a dose-response study, muscle protein synthesis plateaued at about 0.40 g/kg per meal in men around 71 versus 0.24 g/kg in men around 22; the authors concluded older adults “require a greater relative protein intake” (Moore and colleagues, Journal of Gerontology, 2015). The PROT-AGE and ESPEN expert groups recommend 1.0 to 1.2 g/kg a day for healthy older adults and 1.2 to 1.5 with illness; PROT-AGE adds 25 to 30 g per meal (PROT-AGE summary; ESPEN, 2014). For a 70 kg woman that is about 28 g at breakfast, which is hard to do with toast and coffee. This is the strongest practical case for a powder in this age group, and it is the case we make most often with clients over 60.

Dieting

In a four-week trial of 40 overweight young men on a 40 percent calorie deficit with six training days a week, the group eating 2.4 g/kg of protein gained 1.2 kg of lean mass and lost 4.8 kg of fat; the group at 1.2 g/kg held lean mass flat and lost 3.5 kg of fat (Longland and colleagues, AJCN, 2016, via Examine). Young men, an aggressive deficit, four weeks: the lesson is that protein protects muscle when calories drop, not that you will gain muscle while dieting. A scoop of isolate adds about 25 g of protein for roughly 100 to 120 calories.

Timing and kidneys

A meta-analysis of 23 studies found no effect of protein timing around training once total daily protein was accounted for; the authors wrote that the results “refute the widely held view that protein timing around training is critical” (Schoenfeld, Aragon and Krieger, JISSN, 2013). Drink the shake when it fits your day. On kidneys: a review of 28 studies in healthy adults, including people with obesity, type 2 diabetes or high blood pressure, found no decline in kidney filtration rate with higher protein intakes (Devries and colleagues, Journal of Nutrition, 2018). The included trials were not randomized, so the evidence is reassuring rather than conclusive, and anyone with existing kidney disease should talk to their physician before raising protein.

Whey or plant: what the trials say

Our old post on this subject argued that plant protein is superior to whey. The evidence does not support that, or the reverse.

• A 2021 meta-analysis of 16 randomized trials found no difference in strength between animal and plant protein supplementation on any measure, and a small lean-mass edge for animal protein (0.5 percent) that appeared only in adults under 50 and disappeared when any one of four studies was removed (Lim and colleagues, Nutrients, 2021).
• Thirty-eight young adults, half vegan and half omnivore, trained for 12 weeks with both groups brought to 1.6 g/kg of protein (soy for the vegans, whey for the omnivores). Muscle and strength gains were the same (Hevia-Larrain and colleagues, Sports Medicine, 2021).
• Nine studies comparing soy with animal protein: no difference in strength or lean mass (Messina and colleagues, 2018; note the lead author’s soy-industry affiliation). A small 8-week pilot of pea versus whey in 15 trained athletes found the same (Banaszek and colleagues, Sports, 2019).

Why the gram-for-gram difference exists: leucine, the amino acid that switches on muscle protein synthesis, is about 11 percent of whey protein and 7 percent of pea or soy, and plant proteins digest less completely. Whey isolate scores 1.09 on the DIAAS protein quality scale, soy 0.91, pea 0.82, rice 0.37 (Phillips, Nutrition and Metabolism, 2016, table 1; GSSI summary of van Vliet 2015). The fixes are simple: a bigger scoop (about 35 g of pea protein to match the leucine in 25 g of whey), or a pea-plus-rice blend, which is more complete because rice supplies the methionine pea lacks. “More complete,” not “matches whey.”

Where the old post was right: footprint. Producing 100 g of protein from peas emits about 0.4 kg of CO2-equivalent, versus about 8.4 kg from cheese (Our World in Data, from Poore and Nemecek, Science, 2018). That is a legitimate reason to choose plant protein. It is not a muscle reason.

Lactose: whey concentrate is about 5 percent lactose; whey isolate is under 1 percent (Glanbia Nutritionals). Most lactose-sensitive people tolerate isolate; no brand we found guarantees “lactose-free.”

Lead, cadmium and what “third-party tested” means

The FDA does not approve supplements before they are sold; by law it is limited mostly to enforcement after the fact (FDA). That is why independent testing exists, and why two 2025 reports landed hard.

In January 2025 the Clean Label Project tested 160 powders from 70 brands: 47 percent exceeded Prop 65 contaminant thresholds; plant-based powders had three times the lead of whey; organic had three times the lead and twice the cadmium of conventional; chocolate had four times the lead and up to 110 times the cadmium of vanilla. Brand names were not released (CNN report). In October 2025 Consumer Reports tested 23 powders and shakes, several lots of each, against its own level of concern of 0.5 micrograms of lead per day (the Prop 65 figure). More than two-thirds exceeded it in a single serving; plant-based products averaged about nine times the lead of dairy; two products were rated “avoid,” two “limit to once a week,” twelve “okay occasionally,” and seven “better choices for daily use” (Consumer Reports, October 14, 2025). Every product met its labeled protein.

Context matters. CR’s 0.5 microgram benchmark is the strictest in use; the FDA’s interim reference level for women of childbearing age is 8.8 micrograms a day, and the FDA has no action level for lead in protein powder at all (FDA). The Council for Responsible Nutrition argued that exceeding CR’s threshold “is not the same as exceeding a government safety limit” (SupplySide). Both things are true: most flagged products are legal, and if you drink one every day for years, the stricter number is the one to care about. We used CR’s categories in the picks below.

The marks that mean something

• NSF Certified for Sport: label contents verified, no unsafe contaminant levels, screened for 290 banned substances, made in an audited GMP facility (NSF). The strictest widely used mark, and it roughly doubles the price per gram.
• Informed Sport tests every batch before release; Informed Choice blind-tests at least twelve lots a year from retail; both screen for more than 285 banned substances (Informed Sport). Informed Protein, from the same lab, verifies the protein number on the label.
• “Third-party tested” with no program named has no legal definition. Ask which lab, which lot, and whether the certificate of analysis is published.
• Proprietary blends must list ingredients in descending order but not amounts, so a “protein matrix” can be mostly its cheapest ingredient. Amino spiking (adding cheap glycine, taurine or creatine to inflate the nitrogen-based protein test) is the reason Informed Protein exists; the tell is free amino acids high in the ingredient list (Nutritional Outlook).

How to read the tub in ten seconds

Divide grams of protein by grams per scoop. A flavored whey isolate should land at 70 to 85 percent; a plant powder with added fiber and greens 45 to 65. Under 60 percent and you are paying for something other than protein. Then check leucine: 2.5 g or more per serving is the target, which whey hits at about 25 g of protein and pea at about 35. Then the price per 25 g of protein, which is the only fair comparison across brands.

The picks

Prices are one-time list prices as of October 2026; subscriptions typically take 10 to 25 percent off. Cost per 25 g of protein is our arithmetic from the stated price and label.

Whey

Plant

Casein

What we left off and why

• Garden of Life Sport Organic Plant-Based Protein (NSF Certified for Sport) and Momentous 100% Plant Protein: Consumer Reports said limit to once a week, at 400 to 600 percent of its lead benchmark. The NSF mark did not predict the lead result, which is the lesson of 2025.
• Orgain Organic Protein and KOS Organic Plant Protein: “okay occasionally” per CR, and neither carries a named testing program.
• Naked Pea is the cheapest protein we found (about 0.71 dollars per 25 g, 57.99 dollars for 76 servings in October 2026) with a Prop 65 lead warning on its own product page. It was not in CR’s test; Naked Nutrition’s Vegan Mass Gainer, a different product, had the highest lead CR measured. Buy it with eyes open.
• Mass gainers and ready-to-drink shakes: different products for different problems.

When you do not need a powder

If three meals a day already carry 30 g of protein, skip it. A 120 g cooked chicken breast has about 37 g; a 170 g container of nonfat Greek yogurt about 17 g; two large eggs about 12.6 g. A powder earns its place when breakfast is coffee, when you are over 60 and need 30 g at every meal, or when you are cutting calories and need protein without the rest. For a New York note: plain protein powders are exempt from the state’s 2024 law barring sale of weight-loss and muscle-building supplements to under-18s, unless they add an ingredient like creatine (Polsinelli summary of GBL 391-oo).

What happened to the old posts

The previous version of this review listed 15 powders, several with no named testing program and one from a multi-level marketing company. Our separate post arguing that plant-based protein is superior to whey has been merged here and its central claim withdrawn: when daily protein is matched, the trials find no meaningful difference, and the environmental case is the one that holds up.

Frequently asked questions

How much protein powder should I take per day?

As much as it takes to reach your daily target after food, usually one scoop, sometimes two. Work out the target first: about 1.6 g per kg of body weight if you train, 1.0 to 1.2 g/kg if you are over 60 and not training hard, split into meals of about 0.4 g/kg.

Is whey or plant protein better for building muscle?

Matched for total daily protein, trials find the same strength gains and nearly the same muscle gains. Whey is more effective per gram because of its leucine content and digestibility, so with plant protein use a larger scoop or a pea-plus-rice blend.

Is protein powder safe to use every day?

Consumer Reports’ 2025 testing found lead above its strict daily benchmark in more than two-thirds of products, with plant powders far higher than whey. Choose a product in its “daily use” group (the Gold Standard whey and Momentous whey isolate are two), prefer vanilla to chocolate, and check where a plant powder landed in CR’s categories before making it a daily habit.

Should I drink protein right after a workout?

Only if that is when it is convenient. A meta-analysis of 23 studies found timing made no difference once total daily protein was accounted for.

Does NSF Certified for Sport mean a powder is low in lead?

No. NSF verifies there are no unsafe levels of contaminants by its own thresholds, which are not the same as Consumer Reports’ 0.5 microgram benchmark; one NSF-marked plant powder landed in CR’s “once a week” group. The mark is strong evidence against banned substances and mislabeling, not a guarantee on heavy metals.