Chocolate milk: the recovery drink with small trials behind it

In a 5-week randomized trial funded by Dairy MAX and not blinded, 103 high school athletes given chocolate milk after training gained 12.3 percent in combined bench press and squat strength, against 2.7 percent on a carbohydrate drink that did not match it for protein. In 9 trained male cyclists, chocolate milk during a 4-hour recovery let them ride 32 minutes to exhaustion, against 21 on a carbohydrate replacement drink. The answer for sport stays unclear because each cycling trial had 9 or 10 riders and one session per drink. When 10 cyclists and triathletes compared it with a commercial recovery drink of the same calories, time to exhaustion the next day was 13 and 13.5 minutes, p = 0.91. As a food, a cup of 8.7 oz (248 g) gives about 161 calories, 8.5 g protein and 317 mg calcium in the US survey database, which does not specify the fat level.

The numbers, per 3.5 oz (100 g)

As people eat it, per 3.5 oz (100 g)

How much is actually in it

• A cup of lowfat chocolate milk (248 g) gives about 161 calories, 8.5 g protein and 317 mg calcium in the US survey database. — Chocolate milk, NFS, lowfat (USDA FNDDS 11511000, fdc_id 2705466) Evidence E source
  Per 100 g: 65 calories, protein 3.44 g, calcium 128 mg; per cup 248 g: 161 calories, 8.5 g protein, 317 mg calcium

What a real portion looks like

• In the US survey database a standard serving of chocolate milk is one cup or one school carton, both 248 g. — Chocolate milk, NFS (USDA FNDDS 11511000, fdc_id 2705466) Evidence E source
  1 cup 248 g, 1 individual school container 248 g, 1 fl oz 31 g

What your body absorbs

• In 20 Jamaican children aged 6 to 7, only 1.6 percent of iron was absorbed from an iron-fortified chocolate milk drink, rising to 5.1 percent when 25 mg vitamin C was added. — 20 children aged 6-7, Jamaica, stable-isotope labeled iron-fortified chocolate drink (n = 20) Evidence C source
  Geometric mean iron absorption 1.6% (0 mg vitamin C) vs 5.1% (25 mg), and 5.4% vs 7.7% (25 vs 50 mg)
• Chinese 7-year-olds absorbed about 60 percent of the calcium in 3.5 oz (100 g) of chocolate milk, measured with an isotope before any supplement was given. — 34 children aged 7, Hong Kong and Jiangmen, 6 months of 300 mg calcium or placebo, isotope in 100 g chocolate milk (n = 34) Evidence B source
  Fractional calcium absorption at baseline 60.6% vs 58.2%; after 6 months 55.6% (calcium) vs 64.3% (placebo), P = 0.015

What it does to your health

• In 9 trained male cyclists, chocolate milk taken during a 4-hour recovery let them ride about 51 percent longer to exhaustion than a carbohydrate replacement drink. — 9 trained male cyclists, glycogen-depleting exercise then 4 h recovery (n = 9) Evidence B source
  Time to exhaustion 32 ± 11 min (chocolate milk) vs 21 ± 8 min (carbohydrate drink) and 23 ± 8 min (fluid drink)
• In 10 cyclists, chocolate milk after a 1.5-hour ride cut a later 40 km time trial to about 79 minutes, against about 86 minutes with a carbohydrate drink or 87 with placebo. — 10 cyclists, 1.5 h at 70% VO2max plus intervals, 4 h recovery (n = 10) Evidence B source
  40 km time trial 79.43 ± 2.11 min (chocolate milk) vs 85.74 ± 3.44 (carbohydrate) and 86.92 ± 3.28 (placebo)
• A 2019 meta-analysis of 12 controlled trials in trained athletes found chocolate milk did not change time to exhaustion, effort ratings, heart rate, lactate or muscle damage markers overall against placebo or sports drinks. — trained athletes in 12 controlled trials (2 high, 9 fair, 1 low quality), 11 with extractable data, searched to April 2017 (n = 12 trials) Evidence A source
  No overall effect on TTE, RPE, HR, serum lactate or CK vs placebo or other sport drinks (P>0.05)
• In subgroups of the same 2019 meta-analysis, chocolate milk added about 0.8 minutes to time to exhaustion against placebo and about 6 minutes against other carbohydrate, protein and fat drinks. — trained athletes in controlled trials of chocolate milk, subgroup analyses Evidence A source
  TTE vs placebo MD +0.78 min (95% CI 0.27 to 1.29); vs CHO-PRO-fat beverages MD +6.13 min (0.11 to 12.15); lactate vs placebo -1.2 mmol/L
• In 9 trained male cyclists, chocolate milk taken during a 4-hour recovery let them ride about 51 percent longer to exhaustion than a carbohydrate replacement drink. — 9 trained male cyclists, glycogen-depleting ride, 4 h recovery, then cycling to exhaustion at 70% VO2max (n = 9) Evidence B source
  Time to exhaustion 32 ± 11 min (chocolate milk) vs 21 ± 8 (carbohydrate drink) and 23 ± 8 (fluid drink)
• In 10 cyclists and triathletes, chocolate milk and an isocaloric commercial recovery drink gave the same time to exhaustion the next day, about 13 minutes. — 10 regional-level cyclists and triathletes, intense intermittent exercise then a test 15-18 h later (n = 10) Evidence B source
  TTE 13 ± 10.2 min (chocolate milk) vs 13.5 ± 8.9 min (recovery drink), p=0.91; smaller CK rise with chocolate milk
• In 10 cyclists, chocolate milk after a 1.5-hour ride cut a later 40 km time trial to about 79 minutes, against about 86 minutes with a carbohydrate drink or 87 with placebo. — 10 cyclists, 1.5 h at 70% VO2max plus intervals, 4 h recovery, then 40 km time trial (n = 10) Evidence B source
  40 km TT 79.43 ± 2.11 min (chocolate milk) vs 85.74 ± 3.44 (isocaloric carbohydrate) and 86.92 ± 3.28 (placebo), p≤0.05
• In 22 untrained young men lifting weights for 8 weeks, adding 17 fl oz (500 mL) of chocolate milk raised total one-repetition maximum by 36.7 percent against 17.6 percent with training alone. — 22 untrained healthy university-aged men, resistance training 3 times a week for 8 weeks, with or without 17 fl oz (500 mL) chocolate milk (n = 22) Evidence B source
  1RM total +36.7% (training plus chocolate milk) vs +17.6% (training only); larger gains in muscle thickness, jump and peak power

Safety, limits and interactions

• Listeria from unpasteurised chocolate milk of one Pennsylvania dairy was genetically linked to two hospitalized patients over 65, one of whom died. — 2 patients over 65 in California and Florida, 2014, unpasteurised chocolate milk (n = 2) Evidence C source
  1 death among 2 cases; isolates within 2 alleles by whole-genome typing
• WHO recommends keeping free sugars, which include sugar added to drinks such as chocolate milk, below 10 percent of daily energy, and ideally below 5 percent. — adults and children Evidence E source
  Free sugars below 10% of total energy intake (strong recommendation); below 5% (conditional)
• In 968 school lunches, children who chose chocolate milk took in 58 more calories and 10 g more total sugar from lunch than those choosing low-fat white milk. — 619 kindergarten to fifth grade students, 968 school lunches, South Carolina, 2013 (n = 619) Evidence C source
  +58 calories and +10 g total sugar per lunch (chocolate vs white milk), P < 0.001
• Listeria from unpasteurised chocolate milk of one Pennsylvania dairy was genetically linked to two hospitalized patients over 65, one of whom died. — 2 patients over 65 in California and Florida, 2014, unpasteurised chocolate milk (n = 2) Evidence C source
  1 death among 2 cases; isolates closely related by whole-genome sequencing
• FDA counts pregnant women and their unborn or newborn babies, adults over 65 and people with weakened immune systems as the high-risk groups for serious effects of listeriosis. — pregnant women and their unborn or newborn baby, adults over the age of 65, people with weakened immune systems Evidence E source
  Named as high-risk groups susceptible to the serious and adverse effects of listeriosis

What people believe that the data does not support

• In a randomized marketplace trial of 3584 Canadians, front-of-package 'high in' warning labels led to fewer chocolate milk purchases than no label. — 3,584 Canadians aged 13 and older, experimental marketplace, 2018 (n = 3584) Evidence B source
  Fewer chocolate milk purchases with 'high in' labels vs no label; size not given in abstract
• In the same 2020 meta-analysis, when the protein drink and the carbohydrate drink had equal calories, the protein drink gave no endurance advantage. — 59 participants in 6 trials with isocaloric carbohydrate-protein and carbohydrate drinks (n = 59) Evidence A source
  TTE MD +1.27 min (95% CI -4.73 to 7.26), p=0.68

Who this works differently for

• In a 5-week field trial in 103 high school athletes, those given chocolate milk after training gained 12.3 percent in combined bench press and squat strength against 2.7 percent with a carbohydrate drink. — 103 high school athletes, mean age 15.3, 70.9% male, 5 weeks of strength training 4 days a week (n = 103) Evidence B source
  Composite strength +12.3% (chocolate milk) vs +2.7% (carbohydrate drink), interaction p = .04
• In 32 boys aged 9 to 14, a 12 fl oz (350 mL) chocolate milk drink before lunch cut pizza intake to 878 calories from 1048 calories after water. — 32 boys aged 9-14, 12 fl oz (350 mL) preloads 60 min before an ad libitum pizza lunch (n = 32) Evidence B source
  Lunch intake 878 ± 41 calories (1% chocolate milk, 224 calories) vs 1048 ± 35 calories (water), p < 0.001
• In 968 school lunches, children who chose chocolate milk took in 58 more calories and 10 g more total sugar from lunch than those choosing low-fat white milk. — 619 kindergarten to fifth grade students, 968 school lunches, South Carolina, 2013 (n = 619) Evidence C source
  +58 calories and +10 g total sugar per lunch (chocolate vs white milk), P < 0.001; 75% chose chocolate milk
• In 8 trained cyclists, dairy chocolate milk, chocolate soy and hemp drinks and plain low-fat milk all improved a time trial 4 hours later by a similar amount against a low-energy placebo. — 8 healthy trained male cyclists, glycogen-lowering intervals, 4 h recovery, 20 km time trial (n = 8) Evidence B source
  20 km TT about 34.5-34.9 min with any isoenergetic drink vs 37.85 min with placebo (p=.019); no difference between drinks
• In a 5-week field trial in 103 high school athletes, those given chocolate milk after training gained 12.3 percent in combined bench press and squat strength against 2.7 percent with a carbohydrate drink. — 103 high school athletes (mean age 15.3, 70.9% male), 5-week summer strength program (n = 103) Evidence B source
  Composite strength +12.3% (chocolate milk) vs +2.7% (carbohydrate drink); interaction p=.04
• In 24 untrained men and women, milk protein taken for 4 days after leg exercise did not reduce muscle damage, soreness or strength loss compared with an energy-matched control. — untrained males and females, 12 per group, milk protein or isoenergetic control, 17 doses over 4 days (n = 24) Evidence B source
  No attenuation of mild exercise-induced muscle damage vs control

What is still unknown

• In 10 cyclists and triathletes, chocolate milk and an isocaloric commercial recovery drink gave the same time to exhaustion the next day, about 13 minutes. — 10 regional-level cyclists and triathletes, 1.0 g carbohydrate/kg/h after intense exercise (n = 10) Evidence B source
  Time to exhaustion 13 ± 10.2 min (chocolate milk) vs 13.5 ± 8.9 min (recovery drink), p = 0.91
• A 2020 meta-analysis of carbohydrate plus protein drinks, the mix chocolate milk provides, found no better endurance than carbohydrate alone when taken during recovery, across 14 trials. — 130 participants in 14 trials giving carbohydrate-protein or carbohydrate drinks during a recovery period before a time-to-exhaustion test (n = 130) Evidence A source
  TTE MD +1.55 min (95% CI -3.06 to 6.16), p=0.51; I2 54%; short recovery up to 8 h: MD -0.64 min (-5.27 to 3.99)
• A 2019 systematic review of 11 studies of cow's milk after exercise found mixed results on performance and muscle function recovery, with too few studies for firm conclusions. — 11 studies of cow's milk after resistance, high-intensity or endurance exercise, searched to April 2018 (n = 11 studies) Evidence A source
  Some studies positive, others no effect; heterogeneous amounts, timing and outcomes; no pooled estimate

The bottom line

A third cycling trial points the same way as the first. In 10 cyclists, chocolate milk after a 1.5-hour ride brought a later 40 km time trial to 79.4 minutes, against 85.7 on an equal-calorie carbohydrate drink without protein and 86.9 on placebo, in a small sample. In children the drink changes the rest of the plate. In 32 boys aged 9 to 14, 12 fl oz (350 mL) of 1 percent chocolate milk an hour before lunch cut pizza intake to 878 calories from 1048 calories after water, in a single meal where the 224 calories in the drink partly offset the saving. In an observational study of 619 pupils from kindergarten to fifth grade across 968 lunches in two South Carolina schools, those who chose chocolate milk took in 58 more calories and 10 g more total sugar than those who chose low-fat white milk. Three in four picked chocolate. Chinese 7-year-olds absorbed about 60 percent of the calcium in 3.5 oz (100 g) of chocolate milk, measured with an isotope, with the drink serving only as the test vehicle. Iron is another story. Twenty Jamaican children aged 6 to 7 absorbed 1.6 percent of the iron in an iron-fortified chocolate drink, and 5.1 percent once 25 mg of vitamin C was added, in a controlled study that was not randomized. The one safety finding is about unpasteurised milk. Listeria from unpasteurised chocolate milk made by a Pennsylvania dairy was genetically matched to two hospitalized patients over 65 in 2014, one of whom died. Only the unpasteurised product was implicated, not pasteurized chocolate milk, and two older patients are simply whom this outbreak reached: they do not show that raw chocolate milk is safe for anyone else. In a simulated shop with 3,584 Canadians aged 13 and older, "high in" warning labels on the front of the pack led to fewer chocolate milk purchases than no label, and the abstract does not say by how much. FDA counts pregnant women and their unborn or newborn babies, adults over 65 and people with weakened immune systems as the groups at high risk of serious illness from listeriosis. We have no card on lactose intolerance, milk allergy or medicines for chocolate milk, so this page says nothing about those.

Sources

1. chmk-r6-01 · USDA FNDDS, dataset
   Chocolate milk, NFS (FNDDS 11511000, fdc_id 2705466): Energy 65 KCAL; Protein 3.44 G; Calcium, Ca 128 MG per 100 g; 1 cup 248 g: 161.2 KCAL, 8.5 G protein, 317.4 MG calcium
   USDA FNDDS, FDC 2705466 (food code 11511000) · checked 2026-09-29
2. chmk-r6-02 · USDA FNDDS, dataset
   Chocolate milk, NFS (FNDDS 11511000, fdc_id 2705466): 1 cup 248 g; 1 fl oz 31 g; 1 individual school container 248 g; Quantity not specified 248 g
   USDA FNDDS, FDC 2705466 (food code 11511000) · checked 2026-09-29
3. chmk-r6-08 · controlled clinical trial
   In the first study, iron absorption was significantly greater (P < 0.0001) after the addition of 25 mg ascorbic acid: geometric mean iron absorption was 1.6% (range: 0.9-4.2%) and 5.1% (2.2-17.3%) for the test meals containing 0 and 25 mg ascorbic acid, respectively.
   Am J Clin Nutr, 1998 · checked 2026-09-29
4. chmk-r6-09 · RCT
   There was no significant difference in baseline TFCA between the study group (60.6 (SD 11.4)%) and the controls (58.2 (SD 9.0)%; P = 0.55).
   Br J Nutr, 1995 · checked 2026-09-29
5. chmk-r6-04 · RCT
   Participants cycled 51% and 43% longer after ingesting CM (32 +/- 11 min) than after ingesting CR (21 +/- 8 min) or FR (23 +/- 8 min).
   Appl Physiol Nutr Metab, 2009 · checked 2026-09-29
6. chmk-r6-06 · RCT
   The TT time was faster in CM than in CHO and in PLA (79.43 ± 2.11 vs. 85.74 ± 3.44 and 86.92 ± 3.28 minutes, p ≤ 0.05).
   J Strength Cond Res, 2011 · checked 2026-09-29
7. ev-cmmr-01 · meta-analysis of controlled trials
   The meta-analyses revealed that CM consumption had no effect on TTE, RPE, HR, serum lactate, and CK (P > 0.05) compared to placebo or other sport drinks.
   Eur J Clin Nutr, 2019: Chocolate milk for recovery from exercise, a systematic review and meta-analysis of controlled clinical trials · checked 2026-10-07
8. ev-cmmr-02 · meta-analysis of controlled trials
   Subgroup analysis revealed that TTE significantly increases after consumption of CM compared to placebo [mean difference (MD) = 0.78 min, 95% confidence interval (CI): 0.27, 1.29, P = 0.003] and carbohydrate, protein, and fat-containing beverages (MD = 6.13 min, 95% CI: 0.11, 12.15, P = 0.046).
   Eur J Clin Nutr, 2019: Chocolate milk for recovery from exercise, a systematic review and meta-analysis of controlled clinical trials · checked 2026-10-07
9. ev-cmmr-06 · RCT
   Participants cycled 51% and 43% longer after ingesting CM (32 +/- 11 min) than after ingesting CR (21 +/- 8 min) or FR (23 +/- 8 min).
   Appl Physiol Nutr Metab, 2009 · checked 2026-10-07
10. ev-cmmr-07 · RCT
    These findings indicate no difference between CHOC and this commercial beverage as potential recovery aids for cyclists between intense workouts.
    Appl Physiol Nutr Metab, 2009 · checked 2026-10-07
11. ev-cmmr-08 · RCT
    The TT time was faster in CM than in CHO and in PLA (79.43 ± 2.11 vs. 85.74 ± 3.44 and 86.92 ± 3.28 minutes, p ≤ 0.05).
    J Strength Cond Res, 2011 · checked 2026-10-07
12. ev-cmmr-10 · RCT
    The 1 RM total increased by 36.7% in RTCM group compared to 17.6% increased in the RT group
    Front Physiol, 2023: The effect of 8-weeks of combined resistance training and chocolate milk consumption on maximal strength, muscle thickness, peak power and lean mass, untrained, university-aged males · checked 2026-10-07
13. chmk-r6-10 · outbreak investigation
    In 2016, the US Food and Drug Administration notified the Centers for Disease Control and Prevention (Atlanta, GA) that L. monocytogenes isolated from unpasteurized chocolate milk from a Pennsylvania dairy was closely related, by whole-genome sequencing, to L. monocytogenes isolates collected from blood specimens of 2 patients (in California and Florida) in 2014.
    J Dairy Sci, 2020 · checked 2026-09-29
14. ev-cmmr-13 · agency guideline
    In both adults and children, WHO recommends reducing the intake of free sugars to less than 10% of total energy intake2 (strong recommendation).
    WHO, 2015, Guideline: sugars intake for adults and children · checked 2026-10-07
15. ev-cmmr-14 · observational study
    Ordinary least square regressions found that the consumption of energies and nutrients from NSLP lunches varied with sociodemographic characteristics and milk choice; students selecting chocolate milk consumed 58 more energies (P < 0·001) and 10 more grams of total sugar (P < 0·001) than students selecting low-fat white milk from their NSLP lunches.
    Public Health Nutr, 2021 · checked 2026-10-07
16. ev-cmmr-15 · outbreak investigation
    In 2016, the US Food and Drug Administration notified the Centers for Disease Control and Prevention (Atlanta, GA) that L. monocytogenes isolated from unpasteurized chocolate milk from a Pennsylvania dairy was closely related, by whole-genome sequencing, to L. monocytogenes isolates collected from blood specimens of 2 patients (in California and Florida) in 2014.
    J Dairy Sci, 2020 · checked 2026-10-07
17. sf-listeriarisk-chocmilk-1 · agency advice
    Pregnant women and their unborn or newborn baby, adults over the age of 65, and those with weakened immune systems, are all considered to be high-risk groups that are susceptible to the serious and adverse effects of listeriosis.
    Listeria (Listeriosis), US Food and Drug Administration, At-Risk Groups · checked 2026-10-08
18. chmk-r6-12 · RCT
    "High in" labels produced fewer purchases of chocolate milk than no label.
    J Acad Nutr Diet, 2022 · checked 2026-09-29
19. ev-cmmr-04 · meta-analysis of RCTs
    No significant effect was found between the ingestion of isocaloric CHO-PRO and CHO on TTE performance (MD: 1.27, CI: −4.73, 7.26, p = 0.68) (Figure 8).
    Nutrients, 2020 · checked 2026-10-07
20. chmk-r6-03 · RCT
    The CM group (12.3% increase) had significantly greater improvements in composite strength from pre- to post-test than CHO (2.7% increase).
    J Int Soc Sports Nutr, 2019 · checked 2026-09-29
21. chmk-r6-07 · RCT
    In the 32 boys (age: 11.8 ± 0.3 years), FI was reduced (p < 0.001) after cola (940 ± 46 kcal) and chocolate milk (878 ± 41 kcal) compared with the water control (1048 ± 35 kcal) and after chocolate milk compared to the fruit drink (1005 ± 44 kcal).
    Nutrients, 2019 · checked 2026-09-29
22. chmk-r6-11 · observational study
    Ordinary least square regressions found that the consumption of energies and nutrients from NSLP lunches varied with sociodemographic characteristics and milk choice; students selecting chocolate milk consumed 58 more energies (P < 0·001) and 10 more grams of total sugar (P < 0·001) than students selecting low-fat white milk from their NSLP lunches.
    Public Health Nutr, 2021 · checked 2026-09-29
23. ev-cmmr-09 · RCT
    These data suggest that postexercise macronutrient and total energy intake are more important for same-day 20-km cycling time trial performance after glycogen-lowering exercise than protein type or protein-to-carbohydrate ratio.
    Int J Sport Nutr Exerc Metab, 2016 · checked 2026-10-07
24. ev-cmmr-11 · RCT
    The CM group (12.3% increase) had significantly greater improvements in composite strength from pre- to post-test than CHO (2.7% increase).
    J Int Soc Sports Nutr, 2019 · checked 2026-10-07
25. ev-cmmr-12 · RCT
    Milk protein ingestion was not beneficial for recovery from EIMD, thus alternative management strategies should be investigated.
    Appl Physiol Nutr Metab, 2023 · checked 2026-10-07
26. chmk-r6-05 · RCT
    A 1-way repeated measures analysis of variance revealed no significant difference (p = 0.91) between trials for time to exhaustion at 85% of maximal oxygen uptake (CHOC 13 +/- 10.2 min, CRB 13.5 +/- 8.9 min).
    Appl Physiol Nutr Metab, 2009 · checked 2026-09-29
27. ev-cmmr-03 · meta-analysis of RCTs
    No significant overall effect was found between the ingestion of CHO-PRO and CHO on TTE performance (MD: 1.55, CI: −3.06, 6.16, p = 0.51) (Figure 5).
    Nutrients, 2020 · checked 2026-10-07
28. ev-cmmr-05 · systematic review
    Whereas some studies found significant positive effect of cow's milk on exercise performance and recovery of muscle function, others did not find any effect.
    J Int Soc Sports Nutr, 2019 · checked 2026-10-07