Allergies/ dermatitis- this is relatively rare. I’ve been in contact with nearly 500 people who have used DNP and I would estimate about 30-40 of them have experienced allergic reactions to DNP. The allergies manifest themselves first as phantom itches (itching without any rashes or redness) around the torso in some people. It will later develop into rashes and or hives around the body and possibly spread to the face, neck, lips, and scalp area in severe cases. Any over the counter or prescription allergy medication (anti histamine) will cure the allergies. Also if you’re allergic to DNP it doesn’t mean you can’t use it in the future. Allergies to DNP seem to have a tolerance factor. It first gets worse, then better with successive cycles. So if you are allergic, stop immediately and start again 7-10 days later and repeat until you are no longer allergic to DNP anymore. Allergies are also dose and length dependent. Yellow vision- This is even more rare than allergies. I’ve only known about 15 people who have experienced this out of all the people I have come in contact with who have used DNP in the past. It seems to be most apparent when you look at a white surface and yellow spots will appear on the white that you see. I’m not sure what exactly causes this, but it doesn’t seem to harm anything and goes away within 1-2 days of stopping the doses.PREVENTION/ CONTRAINDICATIONS: 1. Never start your first cycle with an optimal dose. Always play it safe and start low. 2. Never use DNP if you’re going to be in a hot environment for an extended period of time. 3. Never take any diuretics while on DNP. This includes excessive alcohol. While mild diuretics like alcohol will make you much more uncomfortable and hotter, a harsh diuretic like lasix will kill you when taken with DNP. 4. If oral temperature rises to 103 then discontinue use until temp is completely down to normal. 5. Do not attempt to work out very intensely. When it’s hard to find the energy to go to work, don’t push yourself thinking you can get a good workout in. Long cardio sessions can be especially harmful for your health. It would also raise cortisol levels through the roof and will be very catabolic to muscle. Don’t sweat the cardio when on DNP because DNP will make you burn fat. Stay away from the treadmill! 6. If allergies arise take some allergy medication and if that isn’t strong enough then stop the doses for at least 10 days before restarting. 7. Watch your electrolytes. Carry a bottle of v8 juice with you. One 8-ounce serving of v8 has 900mg of potassium compared to 35mg of potassium in 8 ounces of Gatorade. Aim for 3000-5000mg of potassium (not all from v8) per day. Fresh meats and vegetables also have a lot of potassium in them. Sodium is very important too, but is usually not hard to get in the diet. Magnesium can be obtained from supplementation.