Those who have used Soma tablets are already aware that physicians usually prescribe the 350mg dosage for short-term muscle pain treatment. Soma 350mg and 500mg pills are the popular dosages available in online pharmacies in the USA. Most people prefer 350mg of Soma over 500mg dose, thinking it will not cause side effects since it is a lower dosage. This is a misconception and the information is false if you have read it somewhere on the internet. Soma can cause normal to serious side effects regardless of the dosage or formulation.