Hello dear, Lipo 6 black is composed of certain herbal products & vitamins, which is helpful in burning fat and subsequently reducing body weight. So, while you are taking the course of medicine, you can take aspirin and ibuprofen if you catch cold or get an headache. Symptomatic management of hay fever using nasal sprays & antihistamine preparations can be carried out. There is no incidence of any side effect or cross reaction reported. However, individuals taking Lipo 6 black have reported symptoms like dizziness, etc. So, if you appreciate any such symptom, kindly seek medical help. Wishing a good health. Let me know if I need to clarify further. Thanks & take care.