Yes there are alternatives. If you are having too much side effects that are non tolerable and affecting your daily routine, there are few strategies that may help:
1) you can go back to your doctor and ask for change in medication.
2) you can consult doctor and then decrease the dose initially so that body adjusts faster and then hike up the doses slowly till it has full effect.
3) if it is not affecting too much then wait with the current dose till your body adjusts (may be 2-3 weeks).
Next Steps
consult your doctor if the side effects are non tolerable