What could I take to get the same effect as taking aderall? Anything without a prescription?

Not really. . . There are several herbal or otc products marketed for add but none has similar effect to Adderall or ritalin (methylphenidate). There are illegal street drugs (eg, methamphetamine) but these r dangerous, unpredictable & much more costly. Ask yourself: what's your hangup with rx's? Rx med has well-studied effects & known side effects plus reliable dosing. With expert md, you also get monitoring & effective management.