Paurush Jeevan capsules are herbal supplements and are generally considered safe, but their role in improving nutrition and helping with weight gain is not clearly proven. Some people may experience mild stomach upset or allergy, although serious side effects are uncommon. It is better not to rely only on such capsules and instead focus on a balanced diet with adequate calories and protein, along with regular exercise and good sleep. Consult a doctor before starting them, especially if you have any health conditions or are taking other medicines.