It can cause nausea and diarrhea, especially in high doses or after long-term use. It might also pose a risk of ulcers in high doses. As a topical treatment, it can cause skin irritation. Caution is advised when turmeric is taken by people known to have gallstones; consult your health care provider first.
Gain is the ratio between the magnitude of output and input signals. Gain controls on an amplifier are basically just small potentiometers (variable resistors) or volume controls, that allow you to adjust the incoming signal to the amplifier.
So unless you know what method was in use the dB rating means little. I used the term raw gain to let the reader know this is actual signal gain produced by the antenna not the antenna with amplifier. Unfortunately there are no laws (none that anyone enforces) to prevent false dB antenna gain ratings. If I state 5 dB someone else can state 6. I think you know what I mean. I came across a small antenna claiming it produced over 30 dB gain. I know this antenna isn't producing that kind of performance. In fact it's more likely only around 3 dB or less. I state an average raw antenna gain of 5.8 dB on the EZ HD antenna. The test method is dBd (gain over a dipole). A 5.8 dBd gain is excellent for an antenna of this size. I don't want to stir the pot but TV antennas in the past decade have become popular again and are big business for some. Many companies are offering low quality imported antennas.