I got a bottle of Somnidren in January and been using it every once in awhile so it's been opened for 4 months and the bottle says to use it within 6 weeks of opening. Does it mean it lost its effectiveness? The powder caught moisture and got clumpy so I have to chew on it to let it dissolve.
Please let me know if it's not good anymore....thanks
Please let me know if it's not good anymore....thanks