Using weight gainers or mass gainer supplements for just 10 days can still lead to a number of possible side effects, especially if the product is taken in excess or without appropriate physical activity[2][3]. These effects are similar to those seen with longer-term use, though their severity may depend on your individual health, existing conditions, and the composition of the supplement.
- Digestive issues: Rapid intake of high-calorie, protein-rich supplements can cause bloating, cramps, diarrhea, flatulence, and constipation. These symptoms are more common in those with lactose intolerance, as most mass gainers contain dairy ingredients[2][4][5].
- Unhealthy weight gain: Gaining weight quickly without matching the caloric intake through adequate exercise often results in fat deposition rather than muscle gain[2][3][5].
- Increased risk of diabetes: Many weight gainers are high in sugar and carbohydrates, potentially leading to spikes in blood sugar levels and an increased risk for diabetes, especially with excessive or unsupervised use[2].
- Liver and kidney strain: Excessive protein intake can be challenging for the liver and kidneys to process, raising the risk of kidney stones, renal impairment, and liver damage, even over a short period if the amounts are high or if there is pre-existing organ dysfunction[2][3][4][5].
- Allergic reactions: Some supplements contain herbal additives or allergens which may provoke rashes, asthma, or anaphylaxis in sensitive individuals[1][3].
- Gastrointestinal symptoms: Nausea and abdominal pain have also been noted after starting weight gainers, again mostly due to rapid changes in dietary composition[1][5].
- Cardiovascular effects: In individuals with existing heart disease, certain supplements can increase the risk of arrhythmias[1].
- Other rare effects: Improper or high-dose use, especially of prescription drugs (like anabolic steroids), may cause gynecomastia, hallucinations, irritability, mood swings, menstrual irregularities, and stunted growth in younger users[1].
- Respiratory issues: Some users report cough, sneezing, snoring, or even asthma linked to supplement intake, possibly due to additives or protein sources[3].
For most healthy individuals, short-term use (such as 10 days) may cause mild or no major issues when supplements are consumed in moderation and accompanied by appropriate exercise and hydration. However, those with risk factors—kidney/liver impairment, diabetes, allergies, or cardiovascular disease—should avoid unsupervised use and consult a physician before starting any weight gain regimen[1][2][3][4][5].
References
- [1] Side Effects of Weight Gain Medications | Vinmec
- [2] 5 Mass Gainer Side Effects You Should Be Wary Of – Healthkart
- [3] Know These 5 Side-Effects Of Weight Gain Supplements Before … (YouTube)
- [4] 5 Side Effects of Mass Gainer You Should Know – RiteBite Max Protein
- [5] 10 Potential Side Effects of Excess Intake of Protein Supplements